WO2017110900A1 - Système d'alimentation en chaleur - Google Patents

Système d'alimentation en chaleur Download PDF

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Publication number
WO2017110900A1
WO2017110900A1 PCT/JP2016/088161 JP2016088161W WO2017110900A1 WO 2017110900 A1 WO2017110900 A1 WO 2017110900A1 JP 2016088161 W JP2016088161 W JP 2016088161W WO 2017110900 A1 WO2017110900 A1 WO 2017110900A1
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WIPO (PCT)
Prior art keywords
heat
heat medium
temperature
medium
valve
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PCT/JP2016/088161
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English (en)
Japanese (ja)
Inventor
柴田善隆
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大阪瓦斯株式会社
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Publication of WO2017110900A1 publication Critical patent/WO2017110900A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a heat supply system including a heat transfer device that transfers heat between a first heat medium and a second heat medium.
  • Patent Document 1 includes a heat source device having an internal combustion engine, a generator driven by the internal combustion engine, and an exhaust heat heat exchanger for heating cooling water by the heat of exhaust gas discharged from the internal combustion engine.
  • a heat supply system comprising is described.
  • the heat supply system includes a heater for heating the cooling water. In this heat supply system, surplus power generated by the generator is consumed by the heater and converted into heat, that is, the cooling water can be heated and recovered as thermal energy.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a heat supply system that can start an internal combustion engine satisfactorily without using a special device such as a heater. It is in.
  • the characteristic configuration of the heat supply system according to the present invention for achieving the above object is a heat supply system including a heat transfer device that performs heat transfer between the first heat medium and the second heat medium, A first heat source device having an internal combustion engine capable of generating heat; a second heat source device capable of generating heat; and a first flow that flows when the first heat medium is supplied from the heat transfer device toward the first heat source device.
  • a first heat medium supply path, a first heat medium return path that flows when the first heat medium returns from the first heat source device toward the heat transfer device, and the second heat medium include the heat transfer device.
  • a second heat medium supply path that flows when being supplied from at least one of the second heat source devices toward a heat utilization unit that uses heat held by the second heat medium, and the second heat medium is A second heat medium return path that flows when returning from the heat utilization unit toward at least one of the heat transfer device and the second heat source device, and a control device, If the environmental temperature that can affect the start of the internal combustion engine when the internal combustion engine is started is less than a predetermined low temperature threshold, the control device generates the heat held by the first heat medium in the first heat source device.
  • the preheating operation the heat recovered by the second heat medium from the second heat source device is transferred to the first heat medium via the heat transfer device and the first heat medium supply path and the first heat medium.
  • the first heat medium is caused to flow in one heat medium return path
  • the second heat source device is operated, and the second heat medium is caused to flow in the second heat medium supply path and the second heat medium return path.
  • the first operation is to cause the first heat medium to flow and use the heat held by the first heat medium for increasing the temperature of the internal combustion engine of the first heat source device.
  • the control device when the internal combustion engine is started, if the environmental temperature that can affect the start of the internal combustion engine is lower than the predetermined low temperature threshold, the control device can reduce the heat held by the first heat medium.
  • Preheating operation is performed to increase the temperature of the internal combustion engine of one heat source device. That is, a preheating operation is performed at a low temperature such that the environmental temperature that can affect the starting of the internal combustion engine is less than a predetermined low temperature threshold, and the heat transferred from the second heat medium to the first heat medium is used. Then, the temperature of the internal combustion engine of the first heat source device is increased.
  • the startability of the internal combustion engine is improved by performing the preheating operation even at a low temperature when the environmental temperature that can affect the start of the internal combustion engine is lower than a predetermined low temperature threshold.
  • the preheating operation the first heat medium supply path and the first heat medium feedback so that the heat recovered from the second heat source device by the second heat medium is transmitted to the first heat medium via the heat transfer device.
  • the first heat medium is caused to flow in the path, the second heat source device is operated, and the second heat medium is caused to flow in the second heat medium supply path and the second heat medium return path.
  • a first operation is performed in which the heat held by the engine is utilized for increasing the temperature of the internal combustion engine of the first heat source device.
  • the heat recovered by the second heat medium from the operating second heat source device is transmitted to the first heat medium via the heat transfer device, and the first heat medium Can be used to increase the temperature of the internal combustion engine of the first heat source device. Therefore, it is possible to provide a heat supply system that can favorably start the internal combustion engine without using a special device such as a heater.
  • Another characteristic configuration of the heat supply system according to the present invention is that the first heat source device does not start the internal combustion engine and controls the control device while the environmental temperature is lower than the predetermined low temperature threshold.
  • stop information indicating that the internal combustion engine is not started is transmitted at a predetermined timing, The controller is If the stop information is not transmitted from the first heat source device, the heat recovered from the first heat source device by the first heat medium is transmitted to the second heat medium via the heat transfer device.
  • the first heat source device is operated, the first heat medium is caused to flow in the first heat medium supply path and the first heat medium return path, and the second heat medium supply path and the second Performing a heat recovery operation in which the second heat medium is caused to flow in the heat medium return path, and the heat possessed by the second heat medium is utilized in the heat utilization unit; If the stop information is transmitted from the first heat source device, the first operation as the preheating operation is performed.
  • the first heat source device does not start the internal combustion engine while the environmental temperature that can affect the start of the internal combustion engine is lower than the predetermined low temperature threshold, and does not perform internal combustion with respect to the control device. Stop information indicating that the engine is not started is transmitted at a predetermined timing. And if a stop information is transmitted from the 1st heat source device, a control device will perform the 1st operation as the above-mentioned preheating operation. In other words, the first operation (preheating operation) is performed at a low temperature such that the environmental temperature that can affect the starting of the internal combustion engine is less than a predetermined low temperature threshold, and is transferred from the second heat medium to the first heat medium.
  • the temperature of the internal combustion engine of the first heat source device is increased using the generated heat.
  • the first operation preheating operation
  • the control device recovers the heat generated in the first heat source device having the started internal combustion engine and transfers the heat to the second heat medium. It is possible to perform a heat recovery operation in which the heat recovery is performed.
  • Still another characteristic configuration of the heat supply system according to the present invention is to flow the second heat medium from the second heat medium supply path to the second heat medium return path so as to bypass the heat utilization unit, A unit bypass that allows the second heat medium to flow into the heat transfer device without going through the heat utilization unit, and a second heat medium that can adjust the flow rate of the second heat medium in the unit bypass Adjusting means,
  • the controller is When the heat recovery operation is being performed, the flow rate of the second heat medium in the unit bypass is relatively reduced by the second heat medium adjusting means, When the first operation as the preheating operation is performed, the flow rate of the second heat medium in the unit bypass is relatively increased by the second heat medium adjusting means.
  • the flow rate of the second heat medium in the unit bypass is relatively increased by the second heat medium adjusting means. That is, when the first operation as the preheating operation is performed, most of the heat recovered from the second heat source device does not pass through the heat utilization unit (that is, heat is not utilized in the heat utilization unit). ) It is transferred to the first heat medium by the heat transfer device, and the temperature of the internal combustion engine of the first heat source device is increased using the heat.
  • the heat utilization unit has a heat storage unit capable of storing heat, and receives heat from the supplied second heat medium to the heat storage unit. Storing, and passing the heat stored in the heat storage unit to the second heat medium to be supplied, Stop information indicating that the first heat source device does not start the internal combustion engine and does not start the internal combustion engine to the control device while the environmental temperature is lower than the predetermined low temperature threshold. Is transmitted at a predetermined timing, The controller is If the stop information is not transmitted from the first heat source device, the heat recovered from the first heat source device by the first heat medium is transmitted to the second heat medium via the heat transfer device.
  • the first heat source device is operated, the first heat medium is caused to flow in the first heat medium supply path and the first heat medium return path, and the second heat medium supply path and the second Performing a heat recovery operation in which the second heat medium is caused to flow in the heat medium return path, and the heat possessed by the second heat medium is utilized in the heat utilization unit; If the stop information is transmitted from the first heat source device and the heat storage unit of the heat utilization unit does not store heat of the predetermined amount or more, the first operation is performed as the preheating operation, If the stop information is transmitted from the first heat source device and a predetermined amount or more of heat is stored in the heat storage unit of the heat utilization unit, the second heat medium uses the heat utilization as the preheating operation.
  • the first heat medium in the first heat medium supply path and the first heat medium return path so that heat received from the heat storage unit of the unit is transmitted to the first heat medium via the heat transfer device.
  • the second heat source device is not operated, and the second heat medium is caused to flow in the second heat medium supply path and the second heat medium return path.
  • the point which is comprised so that the heat which it may hold may be utilized for the temperature rise of the said internal combustion engine of the said 1st heat-source apparatus.
  • the first heat source device does not start the internal combustion engine while the environmental temperature that can affect the start of the internal combustion engine is lower than the predetermined low temperature threshold, and does not perform internal combustion with respect to the control device. Stop information indicating that the engine is not started is transmitted at a predetermined timing. Then, the control device performs the preheating operation (first operation or second operation) if the stop information is transmitted from the first heat source device. That is, a preheating operation is performed at a low temperature such that the environmental temperature that can affect the starting of the internal combustion engine is less than a predetermined low temperature threshold, and the heat transferred from the second heat medium to the first heat medium is used. Then, the temperature of the internal combustion engine of the first heat source device is increased.
  • the startability of the internal combustion engine is improved by performing the preheating operation even at a low temperature when the environmental temperature that can affect the start of the internal combustion engine is lower than a predetermined low temperature threshold.
  • the second heat source device The heat stored in the heat storage unit of the heat utilization unit can be effectively used for the preheating operation (second operation).
  • the second heat source device In addition, if heat of a predetermined amount or more is not stored in the heat storage unit of the heat utilization unit, that is, if the heat cannot be sufficiently supplied from the heat storage unit of the heat utilization unit to the second heat medium, the second heat source device The generated heat can be used for the preheating operation (first operation). On the other hand, if the stop information is not transmitted from the first heat source device, the control device recovers the heat generated in the first heat source device having the started internal combustion engine and transfers the heat to the second heat medium. It is possible to perform a heat recovery operation in which the heat recovery is performed.
  • Still another characteristic configuration of the heat supply system according to the present invention is to flow the second heat medium from the second heat medium supply path to the second heat medium return path so as to bypass the heat utilization unit, A unit bypass that allows the second heat medium to flow into the heat transfer device without going through the heat utilization unit, and a second heat medium that can adjust the flow rate of the second heat medium in the unit bypass Adjusting means,
  • the controller is When the heat recovery operation is being performed and when the second operation as the preheating operation is being performed, the flow rate of the second heat medium in the unit bypass is adjusted to the second heat medium adjusting means. Relatively less by When the first operation as the preheating operation is performed, the flow rate of the second heat medium in the unit bypass is relatively increased by the second heat medium adjusting means.
  • the flow rate of the second heat medium in the unit bypass is relatively increased by the second heat medium adjusting means. That is, when the first operation as the preheating operation is performed, most of the heat recovered from the second heat source device does not pass through the heat utilization unit (that is, heat is not utilized in the heat utilization unit). ) It is transferred to the first heat medium by the heat transfer device, and the temperature of the internal combustion engine of the first heat source device is increased using the heat.
  • the heat transfer device is connected to the first heat medium return path on the upstream side and to the first heat medium supply path on the downstream side, After performing heat exchange between the first heat medium and the second heat medium that have returned from the first heat source device through the first heat medium return path, the first heat after the heat exchange.
  • a bypass flow path that allows the first heat medium to flow to the supply path, a branch portion from the first heat medium return path to the bypass flow path, or a merge of the bypass flow path and the first heat medium supply path
  • the merging channel between the bypass channel and the first heat medium supply channel when the heat recovery operation is performed.
  • the flow rate of the first heat medium flowing through the bypass channel and the flow rate of the first heat medium flowing through the heat exchanger so that the temperature of the first heat medium after merging at the position approaches a predetermined temperature.
  • the ratio is adjusted and the preheating operation is performed, at least a part of the first heat medium flows through the bypass channel so as to exchange heat with the second heat medium in the heat exchanger.
  • a distribution device that adjusts a ratio between the flow rate of the first heat medium and the flow rate of the first heat medium flowing through the heat exchanger.
  • the temperature of the first heat medium after merging at the merging site between the bypass flow path and the first heat medium supply path becomes a predetermined temperature.
  • the ratio between the flow rate of the first heat medium flowing through the bypass flow path and the flow rate of the first heat medium flowing through the heat exchanger is adjusted so as to approach.
  • the temperature of the first heat medium flowing out from the heat transfer device included in the heat supply system of this characteristic configuration toward the first heat source device that is, the temperature of the first heat medium supplied to the first heat source device.
  • the first heat source device having the internal combustion engine is continuously supplied with the first heat medium (cooling water) in an appropriate temperature range close to the predetermined temperature. Deterioration of the durability of the internal combustion engine can be suppressed.
  • the flow rate of the first heat medium that flows through the bypass channel is such that at least a part of the first heat medium exchanges heat with the second heat medium in the heat exchanger when the preheating operation is performed. And the ratio of the flow rate of the first heat medium flowing through the heat exchanger. As a result, at least a part of the first heat medium exchanges heat with the second heat medium in the heat exchanger, and the heat transferred from the second heat medium to the first heat medium is used to The temperature of the internal combustion engine is increased.
  • the distribution device includes a first temperature detecting unit that detects a temperature of the first heat medium after joining at the joining part, and the joining part or the The motor-operated valve device provided at the branch portion, and valve control means for controlling the operation of the valve device, wherein the valve control means has the first temperature when the heat recovery operation is being performed.
  • the valve device is operated so that the flow rate of the first heat medium flowing through the bypass channel increases as the temperature of the first heat medium detected by the detection means decreases, and the first temperature detection means detects the
  • the preheating operation is performed when the valve device is operated so that the flow rate of the first heat medium flowing through the heat exchanger increases as the temperature of the first heat medium increases, all the first heat The medium flows through the heat exchanger or flows through the bypass channel. It lies in operating the valve device so that the flow rate of the first heat medium flowing through the heat exchanger is larger than the flow rate of the first heating medium.
  • the electric valve device when the heat recovery operation is being performed, is configured such that the first heat medium that flows through the bypass flow path as the temperature of the first heat medium detected by the first temperature detecting unit is lower.
  • the flow rate of the first heat medium flowing through the heat exchanger increases as the temperature of the first heat medium detected by the first temperature detection means increases. That is, when the temperature of the first heat medium is relatively low, most of the low-temperature first heat medium flows through the bypass flow path, so that the heat recovered from the first heat source device is almost transferred to the second heat medium. Not.
  • the temperature of the first heat medium is quickly increased by flowing the first heat medium so as to be continuously heated by the first heat source apparatus while bypassing the heat exchanger.
  • the operation can be continued and the heat from the first heat source device can be recovered.
  • the electric valve device when the preheating operation is performed, all the first heat medium flows through the heat exchanger or heats up more than the flow rate of the first heat medium flowing through the bypass channel. It operates so that the flow rate of the first heat medium flowing through the exchanger increases. That is, unlike the heat recovery operation described above, when the temperature of the first heat medium is relatively low, most of the low-temperature first heat medium flows through the heat exchanger, so that the first heat medium Heat can be received from two heating media. As a result, even when the internal combustion engine of the first heat source device is not started, the temperature of the first heat medium can be increased, and the startability of the internal combustion engine is improved.
  • Still another characteristic configuration of the heat supply system according to the present invention is such that the distribution device is provided at the joining portion, and the temperature of the first heat medium after joining at the joining portion approaches the predetermined temperature.
  • the valve device for adjusting the ratio of the flow rate of the first heat medium flowing through the bypass channel and the flow rate of the first heat medium flowing through the heat exchanger, and between the heat exchanger and the valve device.
  • the first heat medium is allowed to flow from the first part of the first heat medium supply path to the second part of the first heat medium supply path on the downstream side of the joining part without passing through the valve device.
  • a bypass detour control unit capable of adjusting the flow rate of the first heat medium in the valve detour route, and a detour control unit for controlling the operation of the detour amount adjustment unit. Is the flow rate of the first heat medium in the valve bypass when the heat recovery operation is being performed. When the preheating operation is performed, the flow rate of the first heat medium in the valve bypass circuit is relatively increased by the bypass amount adjusting unit. .
  • the bypass control unit relatively reduces the flow rate of the first heat medium in the valve bypass circuit by the bypass amount adjusting unit when the heat recovery operation is performed. That is, since the amount of the first heat medium that flows through the valve device is relatively large, whether or not the first heat medium flows through the heat exchanger is mainly determined after the merge at the merge portion. This is determined by the operation of the valve device determined according to the temperature of the first heat medium.
  • the bypass control means relatively increases the flow rate of the first heat medium in the valve bypass circuit by the bypass amount adjusting means when the preheating operation is performed.
  • the flow rate of the first heat medium that flows to the second part of the gas is relatively increased.
  • Still another characteristic configuration of the heat supply system according to the present invention is such that the distribution device is provided at the joining portion, and the temperature of the first heat medium after joining at the joining portion approaches the predetermined temperature.
  • the valve device for adjusting the ratio of the flow rate of the first heat medium flowing through the bypass channel and the flow rate of the first heat medium flowing through the heat exchanger, and between the heat exchanger and the valve device.
  • the branch control means performs the heat recovery operation.
  • the branch control means relatively reduces the flow rate of the first heat medium in the branch flow path by the branch amount adjusting means when the heat recovery operation is performed. That is, since the amount of the first heat medium that flows from the heat exchanger to the fourth portion of the bypass flow path via the branch flow path is relatively small, the first heat medium flows via the heat exchanger. This is mainly determined by the operation of the valve device determined according to the temperature of the first heat medium after merging at the merging site. On the other hand, the branch control means relatively increases the flow rate of the first heat medium in the branch flow path by the branch amount adjusting means when the preheating operation is performed.
  • the amount of the first heat medium that flows from the heat exchanger to the fourth portion of the bypass channel via the branch channel is relatively large.
  • the heat held by the second heat medium is transmitted to the first heat medium via the heat exchanger, and the first heat medium Can be used to increase the temperature of the internal combustion engine of the first heat source device.
  • Still another characteristic configuration of the heat supply system according to the present invention is that the distribution device is provided in a fifth portion of the bypass flow path between the branch portion and the fourth portion, and the fifth portion It has the throttle valve for restrict
  • the amount of the first heat medium flowing from the branch part to the fourth part of the bypass flow path is limited by the throttle valve, so that the first heat medium flows through the branch flow path by the branch amount adjusting means. If the state is created, the amount of the first heat medium that flows from the heat exchanger to the fourth portion of the bypass flow path via the branch flow path without going through the throttle valve becomes relatively large.
  • FIG. 1 is a diagram illustrating a configuration of a heat supply system according to the first embodiment.
  • FIG. 2 is a diagram illustrating a configuration of the heat transfer device 20 of the heat supply system of the first embodiment.
  • FIG. 3 is a functional block diagram of the heat supply system.
  • the heat supply system includes a heat transfer device 20, a thermoelectric supply device 50 as a first heat source device, a boiler device 1 as a second heat source device, a first heat medium supply path 12, and a first heat medium supply device 12.
  • a heat medium return path 11, a second heat medium supply path 3, a second heat medium return path 2, and a control device C are provided.
  • the heat utilization unit 19 and the heat supply system are connected via the second heat medium supply path 3 and the second heat medium return path 2. Heat is supplied to the heat utilization unit 19 from this heat supply system.
  • the heat transfer device 20 is installed indoors in the building B, and the cogeneration device 50 is installed outdoors.
  • the cogeneration apparatus 50 has an internal combustion engine 52 that can generate heat.
  • a cogeneration apparatus 50 shown in FIG. 1 includes an internal combustion engine 52 and a generator 51 driven by the internal combustion engine 52. Therefore, in the combined heat and power supply device 50, heat discharged from the internal combustion engine 52 and electricity output from the generator 51 are generated.
  • the combined heat and power supply device 50 is a first heat source device that heats the first heat medium. Control of the operation of the cogeneration apparatus 50 is performed by the control apparatus C described later.
  • the boiler device 1 is a device that can generate heat. Specifically, the boiler device 1 is a device that heats the second heat medium by using combustion heat generated by burning fuel, and generally has an advantage of high heat output. In the present embodiment, the boiler device 1 is a second heat source device that heats the second heat medium. Control of the operation of the boiler device 1 is performed by the control device C described later.
  • the first heat medium circulates through the first heat medium supply path 12 and the first heat medium return path 11 between the cogeneration apparatus 50 and the heat transfer apparatus 20.
  • the first heat medium supply path 12 is a flow path that flows when the first heat medium is supplied from the heat transfer device 20 toward the cogeneration device 50.
  • the first heat medium return path 11 is a flow path that flows when the first heat medium returns from the cogeneration apparatus 50 toward the heat transfer apparatus 20.
  • the heat transfer device 20 includes a heat exchanger 28, a bypass channel 24, and a distribution device D having a valve device 34.
  • the heat transfer device 20 includes a first pump 32, an expansion tank 29, a throttle valve 35, and a second pump 33. These devices are accommodated in the outer container V.
  • the first pump 32 When the first pump 32 is operated, the first heat medium is drawn from the cogeneration device 50 to the heat transfer device 20 through the first heat medium return path 11 and from the heat transfer device 20 to the cogeneration device. 50 is sent out through the first heat medium supply path 12.
  • the second pump 33 When the second pump 33 is operated, the second heat medium is drawn into the heat transfer device 20 through the second heat medium return path 2 and from the heat transfer device 20 through the second heat medium supply path 3. Sent out. Control of the operation of the first pump 32 for flowing the first heat medium and the second pump 33 for flowing the second heat medium is performed by the control device C described later.
  • the expansion tank 29 is provided in the middle of the first heat medium return path 11 between the combined heat and power supply device 50, the heat exchanger 28, and the valve device 34.
  • the inside of the expansion tank 29 is opened to the atmosphere by an opening 30.
  • the expansion tank 29 is provided in the middle of the first heat medium return path 11 at a position closer to the cogeneration device 50 than the first pump 32. That is, in the heat supply system of the present embodiment, when the liquid surface (atmospheric pressure) of the first heat medium in the expansion tank 29 is used as a reference, the first heat medium flowing through the heat / electric supply device 50 is expanded from the heat / electric supply device 50.
  • the sum of the pressure loss of the first heat medium up to the tank 29 and the pressure corresponding to the height difference between the combined heat and power supply device 50 and the expansion tank 29 is applied.
  • the expansion tank 29 is provided in the middle of the first heat medium return path 11 between the combined heat and power supply device 50, the heat exchanger 28, and the valve device 34, and the inside of the expansion tank 29 is opened to the atmosphere.
  • the pressure of the first heat medium applied to the combined heat and power supply device 50 can be relatively lowered.
  • the throttle valve 35 is provided in the middle of the first heat medium supply path 12 and functions as a flow rate regulator for adjusting the flow rate of the first heat medium flowing out toward the combined heat and power supply device 50.
  • the throttle valve 35 is also accommodated in the outer container V.
  • the first heat medium return path 11 is connected to the upstream side, and the first heat medium supply path 12 is connected to the downstream side.
  • the heat exchanger 28 performs heat exchange between the first heat medium and the second heat medium returned from the combined heat and power supply device 50 through the first heat medium return path 11, and then performs the heat exchange. It is possible to function to supply the subsequent first heat medium toward the combined heat and power supply device 50 via the first heat medium supply path 12.
  • the heat transfer device 20 causes the heat exchanger 28 to perform heat exchange between the first heat medium and the second heat medium.
  • the heat generated in the combined heat and power supply device 50 (that is, the heat of the first heat medium) is recovered, and the heat is transferred to the second heat medium via the heat exchanger 28.
  • the recovery operation and the preheating operation of heating the internal combustion engine 52 of the combined heat and power supply device 50 can be performed by passing the heat of the second heat medium to the first heat medium via the heat exchanger 28.
  • the preheating operation will be described.
  • the control device C heats the first heat medium. Is used for the temperature increase of the internal combustion engine 52 of the combined heat and power supply device 50.
  • the first heat medium supply path 12 and the first heat medium feedback are used so that the heat recovered by the second heat medium from the boiler device 1 is transmitted to the first heat medium via the heat transfer device 20.
  • the first heat medium is caused to flow in the path 11, the boiler device 1 is operated, and the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2, so that the first There is a first operation in which the heat held by the heat medium is used to increase the temperature of the internal combustion engine 52 of the combined heat and power supply device 50.
  • the valve device 34 included in the distribution device D is provided at the branch portion 31 from the first heat medium return path 11 to the bypass flow path 24 or at the junction 21 of the bypass flow path 24 and the first heat medium supply path 12.
  • FIG. 2 shows an example in which the valve device 34 is provided at the joining portion 21.
  • the distribution device D is configured so that the temperature of the first heat medium after joining at the joining portion 21 between the bypass flow path 24 and the first heat medium supply path 12 approaches a predetermined temperature.
  • the ratio between the flow rate of the first heat medium flowing through the bypass flow path 24 and the flow rate of the first heat medium flowing through the heat exchanger 28 is adjusted and the preheating operation is performed, at least a part of the first heat medium is flown.
  • the ratio between the flow rate of the first heat medium flowing through the bypass channel 24 and the flow rate of the first heat medium flowing through the heat exchanger 28 is adjusted so that the heat medium exchanges heat with the second heat medium in the heat exchanger 28. .
  • the temperature of the first heat medium after merging at the merging site 21 between the bypass flow path 24 and the first heat medium supply path 12 is measured by a heat medium temperature sensor 22 as first temperature detection means.
  • an electric three-way valve is used as the valve device 34.
  • the valve device 34 includes a valve body and a motor that drives the valve body. And when the heat recovery operation is performed, the valve device 34 displaces the valve body in accordance with the temperature of the first heat medium after merging, so that the flow rate of the first heat medium flowing through the bypass channel 24 The ratio with the flow rate of the first heat medium flowing through the heat exchanger 28 is changed. That is, the valve device 34 has a flow rate of the first heat medium flowing through the bypass channel 24 and a flow rate of the first heat medium flowing through the heat exchanger 28 so that the temperature of the first heat medium after joining approaches a predetermined temperature. Operates to adjust the ratio.
  • the second heat medium return path 2 is configured such that the second heat medium after the heat is utilized by the heat utilization unit 19 that utilizes the heat held by the second heat medium returns from the heat utilization unit 19.
  • the flow path branches off the flow of the second heat medium at the branch section 4 in the middle.
  • the second heat medium supply path 3 is configured to supply the second heat medium to the heat utilization unit 19, and is a flow path that joins the second heat medium that has been branched and flowing at the midstream junction 5. .
  • the boiler device 1 is also connected to the second heat medium supply path 3 and the second heat medium return path 2.
  • the heat transfer device 20 and the boiler device 1 are respectively supplied with the second heat medium branched at the branch portion 4 in the middle of the second heat medium return path 2.
  • the second heat medium joins at the joining portion 5 in the middle of the second heat medium supply path 3.
  • the second heat medium flows when returning from the heat utilization unit 19 toward at least one of the heat transfer device 20 and the boiler device 1, and the second heat medium supply path.
  • the second heat medium flows when supplied from at least one of the heat transfer device 20 and the boiler device 1 toward the heat utilization unit 19 that uses the heat held by the second heat medium.
  • the second heat medium is supplied via the second heat medium supply path 3 to the heat utilization unit 19 that uses the heat held by the second heat medium. Then, the second heat medium after the heat is utilized by the heat utilization unit 19 returns via the second heat medium return path 2.
  • a circulation pump 44 is provided in the middle of the second heat medium supply path 3. Control of the operation of the circulation pump 44 is performed by the control device C described later.
  • the heat transfer device 20 and the boiler device 1 are provided in parallel to the second heat medium supply path 3 and the second heat medium return path 2.
  • the heat generated in the combined heat and power supply device 50 is transferred to the second heat medium via the heat transfer device 20 when the heat recovery operation is being performed, and the heat does not pass through the boiler device 1. It is supplied to the usage unit 19.
  • the heat generated in the boiler device 1 is transferred to the second heat medium, and the heat is supplied to the heat utilization unit 19 without passing through the heat transfer device 20.
  • the relatively low-temperature second heat medium supplied from the heat utilization unit 19 flows into the heat transfer device 20 and the boiler device 1, and the low-temperature second heat is supplied to the heat transfer device 20 and the boiler device 1.
  • the second heat medium can recover a large amount of heat from the heat transfer device 20 and the boiler device 1. Moreover, since the high temperature 2nd heating medium heated by one side of the heat transfer apparatus 20 and the boiler apparatus 1 is supplied to the heat utilization unit 19 without passing through the other side, useless heat dissipation is not performed. .
  • the heat utilization unit 19 includes a hot water storage device 16 and a heating device 15.
  • the hot water storage device 16 includes a tank 17 for storing hot water and a heat exchange unit 18.
  • a hot water discharge passage 9 through which hot water stored in the tank 17 flows out of the tank 17 is connected to the upper portion of the tank 17.
  • Connected to the lower part of the tank 17 is a water supply path 8 through which water replenished in response to the outflow of hot water from the hot water supply path 9 flows into the tank 17.
  • Water pressure is constantly applied to the hot water in the tank 17 from the water supply path 8.
  • a hot water supply terminal 10 such as a faucet is connected to an end of the hot water supply passage 9. When the hot water supply terminal 10 is opened, the hot water in the tank 17 is sent to the hot water supply terminal 10 through the hot water outlet 9 by the water pressure applied to the inside of the tank 17.
  • the second heat medium flows through the heat exchange unit 18. And in the heat exchange part 18, the heat exchange between the hot water stored in the tank 17 and the 2nd heat medium is performed. That is, in the heat exchange unit 18, the hot water in the tank 17 is heated and the temperature is raised using the heat held by the second heat medium.
  • the tank 17 is configured such that hot water is drawn out from the hot water supply passage 9 connected to the upper portion, and at the same time, water is replenished from the water supply passage 8 connected to the lower portion. There will be relatively low-temperature hot water around the 8 connection sites. And relatively hot water is stored above it.
  • the tank 17 is provided with a temperature detector for measuring the temperature of the stored hot water.
  • a plurality of temperature sensors 45 and 46 as temperature detection units are provided in the tank 17.
  • the first temperature sensor 46 as the first temperature detection unit is provided relatively below the inside of the tank 17 of the hot water storage device 16 than the second temperature sensor 45 as the second temperature detection unit. That is, the first temperature of the hot water measured by the first temperature sensor 46 is stored relatively lower in the tank 17 of the hot water storage device 16 than the second temperature of the hot water measured by the second temperature sensor 45. It is the temperature of hot and cold water.
  • the measurement results of the first temperature sensor 46 and the second temperature sensor 45 are transmitted to the control device C described later.
  • These temperature sensors 45 and 46 can be realized using, for example, a thermocouple or a thermistor.
  • a temperature increase permission time zone for permitting a temperature rise operation of the hot water stored in the tank 17 of the hot water storage device 16 during one day, and a temperature rise non-permission time zone for not allowing the temperature increase operation.
  • the information is stored in the storage device 47.
  • the temperature increase permission time zone and the temperature increase non-permission time zone are information input by a user of the heat supply system or the like using an input device 48 described later, or information previously set for the hot water storage device 16. .
  • the heating device 15 is a device that performs heating using the heat of the second heat medium. Specifically, the heating device 15 heats the room by exchanging heat between the second heat medium and the indoor air, that is, by radiating heat of the second heat medium.
  • a room temperature sensor 49 is provided as a room temperature detector for measuring the temperature of the air in the room. The measurement result of the room temperature sensor 49 is transmitted to the control device C described later.
  • the room temperature sensor 49 can be realized using, for example, a thermocouple or a thermistor.
  • a heating permission time zone in which the operation of the heating device 15 is permitted within one day and a heating non-permission time zone in which the operation is not permitted are set.
  • the information is stored in the storage device 47. Has been.
  • the heating permission time zone and the heating non-permission time zone are information input by the user of the heat supply system or the like using the input device 48 or information previously set for the heating device 15.
  • the second heat medium supply path 3 branches at the branch portion 13, and the second heat medium is supplied in parallel to the hot water storage device 16 and the heating device 15. That is, the second heat medium having the same temperature is supplied to the hot water storage device 16 and the heating device 15.
  • the second heat medium supply passage 3 between the branching section 13 and the hot water storage device 16 is provided with an on-off valve 6 for opening and closing the passage.
  • the second heat medium supply path 3 between the branching section 13 and the heating device 15 is provided with an on-off valve 7 that opens and closes the flow path.
  • the second heat medium return path 2 through which the second heat medium after the heat is used in the hot water storage device 16 and the second heat medium feedback through which the second heat medium after the heat is used in the heating device 15 flow. It merges with the path 2 at the junction 14. Control of the operation of the on-off valve 6 and on-off valve 7 is performed by the control device C described later.
  • the flow state of the second heat medium in the second heat medium supply path 3 and the second heat medium return path 2 is adjusted by the circulation pump 44, the second pump 33, the on-off valve 6, and the on-off valve 7.
  • the circulation pump 44 operates, and either the on-off valve 6 or the on-off valve 7 is opened, and the second Heat medium can circulate.
  • a combined heat and power permitted time zone during which the operation of the combined heat and power device 50 is permitted within one day and a combined heat and power non-permitted time zone during which the operation of the combined heat and power device 50 is not permitted are set.
  • the information is stored in the storage device 47.
  • These combined heat and power allowance time zone and combined heat and power non-permission time zone are information input by the user of the heat supply system or the like using the input device 48 or information previously determined by the combined heat and power supply device 50.
  • a boiler permission time zone in which the operation of the boiler device 1 is permitted within one day and a boiler non-permission time zone in which the operation of the boiler device 1 is not permitted are set.
  • the information is stored. It is stored in the device 47.
  • the boiler permission time zone and the boiler non-permission time zone are information input by the user of the heat supply system using the input device 48 or information previously determined by the boiler device 1.
  • the control device C has a first time (first temperature) of hot water inside the tank 17 of the hot water storage device 16 to be temperature-up when the current time is in the temperature increase permission time zone and the cogeneration permission time zone.
  • the combined heat and power supply device 50 When the temperature of the hot water measured by the temperature sensor 46 is equal to or lower than the first lower limit temperature at which the heating operation by the combined heat and power supply device 50 is permitted, the combined heat and power supply device 50 is operated, and the second heat medium is the second heat
  • the flow state adjusting device (circulation pump 44, second pump 33, on-off valve 6 and so on) is circulated between the heat transfer device 20 and the hot water storage device 16 through the medium supply path 3 and the second heat medium return path 2.
  • the on-off valve 7) is operated. That is, the control device C operates the internal combustion engine 52 and the generator 51 included in the cogeneration device 50, operates the first pump 32 and the second pump 33 included in the heat transfer device 20, and operates the circulation pump 44. Open the on-off valve 6.
  • the heat generated in the combined heat and power supply device 50 is transferred to the first heat medium, and further, the heat held by the first heat medium is transferred to the second heat medium via the heat transfer device 20.
  • the second heat medium is supplied to the heat exchange unit 18 of the hot water storage device 16 through the second heat medium supply path 3, and the temperature of the hot water in the tank 17 is increased.
  • the control device C determines that the first temperature of the hot water measured by the first temperature sensor 46 is higher than the first lower limit temperature. If it is higher, that is, if hot water is still sufficiently hot in the tank 17 of the hot water storage device 16, the combined heat and power supply device 50 and the heat transfer device 20 are not operated.
  • the first temperature of the hot water measured by the first temperature sensor 46 is equal to or lower than the first lower limit temperature, that is, even if the temperature of the hot water stored in the tank 17 of the hot water storage device 16 is low, If the time is not in the time zone where the temperature rise permission time zone and the combined heat and power supply time zone overlap (if it is in the temperature rise non-permission time zone or the combined heat and power non-permission time zone), Do not drive.
  • the control device C has a second time (second temperature) of the hot water in the tank 17 of the hot water storage device 16 to be heated, and the current time is in the temperature increase permission time zone and the boiler permission time zone.
  • the temperature of the hot water measured by the sensor 45 is equal to or lower than a second lower limit temperature at which the temperature rising operation by the boiler device 1 is permitted, the boiler device 1 is operated, and the second heat medium is a second heat medium supply path.
  • the flow state adjusting device is operated so as to circulate between the boiler device 1 and the hot water storage device 16. That is, the control device C operates the boiler device 1, operates the circulation pump 44, and opens the on-off valve 6. Thereby, the heat generated in the boiler device 1 is transferred to the second heat medium.
  • the second heat medium is supplied to the heat exchange unit 18 of the hot water storage device 16 through the second heat medium supply path 3, and the temperature of the hot water in the tank 17 is increased.
  • control device C allows the second temperature of the hot water measured by the second temperature sensor 45 to be higher than the second lower limit temperature. In other words, if the hot water is still sufficiently stored in the tank 17 of the hot water storage device 16, the operation of the boiler device 1 is not performed.
  • the second temperature of the hot water measured by the second temperature sensor 45 is equal to or lower than the second lower limit temperature, that is, even if the temperature of the hot water stored in the tank 17 of the hot water storage device 16 is low, If the time is not in the time zone in which the temperature rise permission time zone and the boiler permission time zone overlap (if in the temperature rise non-permission time zone or the boiler non-permission time zone), the operation of the boiler device 1 is not performed.
  • Heating device 15 In the heat supply system of this embodiment, when the air temperature in the building B becomes low, the heating of the air in the building B by the heating device 15 can be performed by the heat generated by the combined heat and power supply device 50. In that case, in the control device C, the current time is in the heating permission time zone and the cogeneration permission time zone, and the temperature of the air to be heated (the temperature of the air measured by the room temperature sensor 49) is the heating device 15. When the temperature condition permitting the heating operation is satisfied (for example, when the temperature is equal to or lower than the third lower limit temperature), the combined heat and power supply device 50 is operated, and the second heat medium is connected to the second heat medium supply path 3 and the second heat medium.
  • the flow state adjusting device is operated so as to circulate between the heat transfer device 20 and the heating device 15 through the two heat medium return paths 2. That is, the control device C operates the internal combustion engine 52 and the generator 51 included in the cogeneration device 50, operates the first pump 32 and the second pump 33 included in the heat transfer device 20, and operates the circulation pump 44. Open the on-off valve 7. Thereby, the heat generated in the combined heat and power supply device 50 is transferred to the first heat medium, and further, the heat held by the first heat medium is transferred to the second heat medium via the heat transfer device 20. In addition, the second heat medium is supplied to the heating device 15 through the second heat medium supply path 3, and the heat radiation of the second heat medium (heating) is performed by the heating device 15.
  • the control device C does not satisfy the above temperature condition (for example, the first time) 3
  • the temperature is higher than the lower limit temperature
  • the combined heat and power supply device 50 and the heat transfer device 20 are not operated.
  • the current time must be a time zone where the heating permission time zone and the combined heat and power usage time zone overlap. If it is in the heating non-permitted time zone or the combined heat and power non-permitted time zone, the operation of the cogeneration device 50 and the heat transfer device 20 is not performed.
  • the temperature of the air in the building B by the heating device 15 can be increased by the heat generated in the boiler device 1.
  • the control device C, the current time is in the heating permission time zone and the boiler permission time zone, and the temperature of the air to be heated (the temperature of the air measured by the room temperature sensor 49) is the heating by the heating device 15.
  • the temperature condition permitting the operation is satisfied (for example, when the temperature is equal to or lower than the third lower limit temperature)
  • the boiler device 1 is operated
  • the second heat medium is the second heat medium supply path 3 and the second heat medium.
  • the flow state adjusting device is operated so as to circulate between the boiler device 1 and the heating device 15 through the return path 2.
  • control device C operates the boiler device 1, operates the circulation pump 44, and opens the on-off valve 7. Thereby, the heat generated in the boiler device 1 is transferred to the second heat medium.
  • the second heat medium is supplied to the heating device 15 through the second heat medium supply path 3, and the heat radiation of the second heat medium (heating) is performed by the heating device 15.
  • the control device C does not satisfy the above temperature condition (for example, the third time)
  • the temperature is higher than the lower limit temperature
  • the boiler device 1 is not operated.
  • the temperature of the air measured by the room temperature sensor 49 satisfies the above temperature condition, that is, even if the room temperature is low
  • the current time is not in a time zone where the heating permission time zone and the boiler permission time zone overlap.
  • the boiler device 1 is not operated (if it is in the heating non-permitted time zone or the boiler non-permitted time zone).
  • the operation for raising the temperature of the hot water in the hot water storage device 16 by the heat generated in the cogeneration device 50 the operation for raising the temperature of the hot water in the hot water storage device 16 by the heat generated in the boiler device 1, and the cogeneration device 50
  • the operation of heating the air in the building B by the heating device 15 by the heat generated in the heating device 15 and the operation of heating the air in the building B by the heating device 15 by the heat generated in the boiler device 1 have been described.
  • the control device C may perform two or more of these operations in a time-overlapping manner.
  • FIG. 3 is a control block diagram of the heat supply system.
  • the control device C that controls the operation of the heat supply system includes the cogeneration device 50, the boiler device 1, the first pump 32, the second pump 33, the circulation pump 44, the on-off valve 6, the on-off valve 7, and the like. Control the operation of. Further, the measurement result of the first temperature sensor 46, the measurement result of the second temperature sensor 45, the measurement result of the room temperature sensor 49, the measurement result of the heat medium temperature sensor 22, and the like are transmitted to the control device C. Information input through the input device 48 is also transmitted to the control device C. Information handled by the control device C such as information transmitted to the control device C can be stored in the storage device 47.
  • the operation of the cogeneration device 50 is controlled by the control device C. However, when the cogeneration device 50 receives a start command from the control device C, the cogeneration device 50 starts the internal combustion engine 52 while the environmental temperature that can affect the start of the internal combustion engine 52 is below a predetermined low temperature threshold. Stop information indicating that the internal combustion engine 52 is not started is transmitted to the control device C at a predetermined timing (that is, when a start command is issued from the control device C).
  • the ambient temperature is, for example, the temperature around, the surface, or the inside of the internal combustion engine 52, the temperature of the first heat medium in the first heat medium supply path 12 or the first heat medium return path 11 in the vicinity of the internal combustion engine 52, and the like. is there. When these temperatures are low, problems such as failure to start the internal combustion engine 52 may occur.
  • the environmental temperature is obtained by using an environmental temperature sensor 53 that is provided inside the cogeneration apparatus 50 (around the internal combustion engine 52) and can measure the temperature.
  • the cogeneration device 50 receives a start command from the control device C, the internal combustion engine 52 and the generator are provided if the environmental temperature that can affect the start of the internal combustion engine 52 is equal to or higher than a predetermined low temperature threshold. 51 is operated. Then, the control device C switches between the heat recovery operation and the preheating operation as described later depending on whether or not the stop information is transmitted from the cogeneration device 50.
  • the control device C determines that the first heat medium is The cogeneration device 50 is operated so that the heat recovered from the cogeneration device 50 is transmitted to the second heat medium via the heat transfer device 20, and the first heat medium supply path 12 and the first heat medium feedback.
  • the first heat medium is caused to flow in the path 11 and the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2 to use heat stored in the second heat medium as heat.
  • the heat recovery operation used by the unit 19 is performed.
  • at least the internal combustion engine 52 operates, the first pump 32 operates, the second pump 33 operates, the circulation pump 44 operates, and either the on-off valve 6 or the on-off valve 7 is opened. Yes.
  • the control device C performs the first operation as the preheating operation as described above. Specifically, as the preheating operation, the control device C supplies the first heat medium such that the heat recovered from the boiler device 1 by the second heat medium is transmitted to the first heat medium via the heat transfer device 20. The first heating medium is caused to flow through the path 12 and the first heating medium return path 11 and the boiler device 1 is operated, and the second heating medium is caused to flow through the second heating medium supply path 3 and the second heating medium return path 2.
  • the first operation is performed in which the heat held by the first heat medium is used to increase the temperature of the internal combustion engine 52 of the cogeneration apparatus 50.
  • at least the first pump 32 operates, the second pump 33 operates, the boiler device 1 operates, the circulation pump 44 operates, and either the on-off valve 6 or the on-off valve 7 is opened. Yes.
  • FIG. 4 and 5 are diagrams illustrating the operation of the heat transfer device 20 when the heat recovery operation described above is performed.
  • FIG. 6 is a diagram illustrating the operation of the heat transfer device 20 when the above-described preheating operation is performed.
  • the distribution device D controls the operation of the heat medium temperature sensor 22 that detects the temperature of the first heat medium after merging at the merging portion 21, the electric valve device 34 provided in the merging portion 21, and the valve device 34.
  • Valve control means (control device C).
  • the control device C allows the flow rate of the first heat medium flowing through the bypass flow path 24 to decrease as the temperature of the first heat medium detected by the heat medium temperature sensor 22 decreases.
  • the valve device 34 is operated so as to be larger than the flow rate of the first heat medium flowing through the flow rate, and the flow rate of the first heat medium flowing through the heat exchanger 28 increases as the temperature of the first heat medium detected by the heat medium temperature sensor 22 increases.
  • the valve device 34 is operated so as to be larger than the flow rate of the first heat medium flowing through the bypass flow path 24.
  • the temperature of the first heat medium when the temperature of the first heat medium is relatively low, most of the low-temperature first heat medium flows through the bypass flow path 24, so that the heat recovered from the combined heat and power supply device 50 is hardly transferred to the second heat medium. Not transmitted.
  • the temperature of the first heat medium is quickly raised by flowing the first heat medium so as to be continuously heated by the combined heat and power apparatus 50 while bypassing the heat exchanger 28, and then the combined heat and power apparatus 50 It is possible to recover the heat from the combined heat and power supply device 50 while continuing the operation.
  • the heat supply device 50 is supplied from the cogeneration device 50 toward the heat transfer device 20. Since the temperature of one heat medium is also low, the temperature of the first heat medium after being mixed by the valve device 34 is also low. At this time, in the valve device 34, most of the first heat medium flows to the bypass flow path 24 side. After that, as shown in FIG. 5, the temperature of the first heat medium supplied from the combined heat and power supply device 50 toward the heat transfer device 20 rises and is mixed by the valve device 34. When the temperature approaches the predetermined temperature, the valve device 34 gradually increases the flow rate of the first heat medium flowing through the heat exchanger 28 side, and decreases the flow rate of the first heat medium flowing through the detour channel 24 side. Let
  • the flow rate of the first heat medium only on one of the bypass flow path 24 side and the heat exchanger 28 side is not changed, but the bypass flow path is changed by changing both flow rates.
  • the ratio of the flow rate of the first heat medium flowing on the 24 side and the flow rate of the first heat medium flowing on the heat exchanger 28 side is changed so that the temperature of the first heat medium after merging approaches a predetermined temperature automatically. It is working.
  • the temperature of the first heat medium that flows out from the heat transfer device 20 and is supplied to the combined heat and power supply device 50 approaches the predetermined temperature.
  • the internal combustion engine 52 of the cogeneration apparatus 50 is continuously supplied with the first heat medium (cooling water) in an appropriate temperature range close to the predetermined temperature.
  • the control device C flows through the heat exchanger 28 so that all the first heat medium flows through the heat exchanger 28 or the flow rate of the first heat medium flowing through the bypass channel 24.
  • the valve device 34 is operated so that the flow rate of the first heat medium increases. More specifically, when the preheating operation is performed, as shown in FIG. 6, the valve device 34 increases the flow rate of the first heat medium flowing on the heat exchanger 28 side, and also on the bypass channel 24 side. The flow rate of the 1st heating medium which flows through is reduced. Thus, heat is transferred from the second heat medium to the first heat medium, and the internal combustion engine 52 of the combined heat and power supply device 50 is heated by the heat of the first heat medium.
  • the first heat medium flows through the heat exchanger 28 so that all the first heat medium flows through the heat exchanger 28 or the flow rate of the first heat medium flowing through the bypass flow path 24. It operates so that the flow rate of one heat medium increases. That is, unlike the heat recovery operation described above, when the temperature of the first heat medium is relatively low, most of the low-temperature first heat medium flows through the heat exchanger 28, so that the first heat medium is Heat can be received from the second heat medium. As a result, even if the internal combustion engine 52 of the combined heat and power supply apparatus 50 is not started, the temperature of the first heat medium can be increased, and the startability of the internal combustion engine 52 is improved.
  • the heat recovery operation is performed, so that the heat recovered by the first heat medium from the operating combined heat and power supply device 50 is transmitted to the second heat medium via the heat transfer device 20.
  • the heat possessed by the second heat medium can be utilized by the heat utilization unit 19.
  • recovered from the boiler apparatus 1 in operation is transmitted to the 1st heat medium via the heat transfer apparatus 20 by performing preheating operation, and the heat which the 1st heat medium has Can be used to increase the temperature of the internal combustion engine 52 of the cogeneration apparatus 50.
  • the combined heat and power supply device 50 does not start the internal combustion engine 52 while the environmental temperature that can affect the start of the internal combustion engine 52 is lower than a predetermined low temperature threshold, and does not start the internal combustion engine 52 with respect to the control device C. Stop information indicating that the start of 52 is not performed is transmitted at a predetermined timing. And the control apparatus C will perform the said preheating operation, if stop information is transmitted from the cogeneration apparatus 50.
  • FIG. That is, a preheating operation is performed at a low temperature when the environmental temperature that can affect the starting of the internal combustion engine 52 is less than a predetermined low temperature threshold, and the heat transferred from the second heat medium to the first heat medium is reduced. Utilizing this, the temperature of the internal combustion engine 52 of the cogeneration apparatus 50 is increased. As a result, the startability of the internal combustion engine 52 is good because the preheating operation is performed even at a low temperature when the environmental temperature that can affect the start of the internal combustion engine 52 is less than a predetermined low temperature threshold. become.
  • the configuration of the heat transfer device 20 is different from that of the above embodiment.
  • the heat supply system of 2nd Embodiment is demonstrated below, description is abbreviate
  • FIG. 7 is a diagram for explaining the operation of the heat transfer device 20 of the heat supply system of the second embodiment.
  • the electric valve device 34 included in the distribution device D is provided at a branch portion 31 from the first heat medium return path 11 to the bypass flow path 24.
  • the valve device 34 displaces the valve body in accordance with the temperature of the first heat medium after joining, so that the flow rate of the first heat medium flowing through the bypass flow path 24 and the first heat flow through the heat exchanger 28. The ratio with the flow rate of the heat medium is changed.
  • valve device 34 has a flow rate of the first heat medium flowing through the bypass channel 24 and a flow rate of the first heat medium flowing through the heat exchanger 28 so that the temperature of the first heat medium after joining approaches a predetermined temperature. Operates to adjust the ratio.
  • the heat supply system of the third embodiment is different from the above embodiment in the configuration of the heat transfer device 20.
  • the heat supply system of 3rd Embodiment is demonstrated below, description is abbreviate
  • FIG. 8 is a diagram for explaining the operation of the heat transfer device 20 of the heat supply system of the third embodiment.
  • the distribution device D is provided at the junction part 21 and the first heat medium flowing through the bypass channel 24 so that the temperature of the first heat medium after the junction at the junction part 21 approaches a predetermined temperature.
  • a valve device 34 that adjusts the ratio of the flow rate of the first heat medium flowing through the heat exchanger 28.
  • a valve bypass circuit 23 capable of flowing the first heat medium to the second part 39 of the first heat medium supply path 12 on the downstream side of the junction part 21 without passing through the valve device 34, and the valve bypass circuit 23
  • the detour amount adjusting means 25 that can adjust the flow rate of the first heat medium at, and the detour control means (control device C) that controls the operation of the detour amount adjusting means 25.
  • the valve device 34 is an electric three-way valve.
  • the bypass amount adjusting means 25 is an on-off valve or a flow rate adjusting valve. In the present embodiment, description of functional blocks of the heat supply system as shown in FIG. 3 is omitted.
  • control apparatus C as a bypass control means makes the flow volume of the 1st heat medium in the valve bypass circuit 23 relatively small by the bypass amount adjustment means 25, when the heat recovery operation is performed.
  • the control apparatus C makes the flow volume of the 1st heat medium in the valve bypass circuit 23 relatively small by the bypass amount adjustment means 25, when the heat recovery operation is performed.
  • the on-off valve as the bypass amount adjusting means 25 is closed, the first heat medium does not flow through the valve bypass circuit 23. That is, since the amount of the first heat medium flowing through the valve device 34 is relatively larger than the amount of the first heat medium flowing through the valve bypass circuit 23, the first heat medium passes through the heat exchanger 28. Whether or not to flow is determined mainly by the operation of the valve device 34 determined according to the temperature of the first heat medium after joining at the joining site 21.
  • the control device C as the bypass control means relatively increases the flow rate of the first heat medium in the valve bypass circuit 23 by the bypass amount adjusting means 25 when the preheating operation is performed.
  • the on-off valve as the bypass amount adjusting means 25 is opened, the resistance of the flow path in the valve bypass circuit 23 decreases, and the flow rate of the first heat medium flowing through the valve bypass circuit 23 increases. That is, the downstream side of the joining portion 21 from the first portion 38 of the first heat medium supply path 12 between the heat exchanger 28 and the valve device 34 via the heat exchanger 28 without passing through the valve device 34.
  • the flow rate of the first heat medium flowing to the second portion 39 of the first heat medium supply path 12 is relatively increased.
  • the heat recovered by the second heat medium from the operating boiler apparatus 1 is transferred to the first heat medium via the heat exchanger 28.
  • the heat held by the first heat medium can be used to increase the temperature of the internal combustion engine 52 of the cogeneration apparatus 50.
  • FIG. 9 is a diagram for explaining the operation of the heat transfer device 20 of the heat supply system of the fourth embodiment.
  • the distribution device D is provided at the junction part 21 and the first heat medium flowing through the bypass channel 24 so that the temperature of the first heat medium after the junction at the junction part 21 approaches a predetermined temperature. From the third portion 40 of the first heat medium supply path 12 between the heat exchanger 28 and the valve device 34, and the valve device 34 that adjusts the ratio of the flow rate of the first heat medium flowing through the heat exchanger 28.
  • the branch flow path 26 that can flow the first heat medium to the fourth portion 41 of the bypass flow path 24 between the branch portion 31 and the merge portion 21, and the flow rate of the first heat medium in the branch flow channel 26
  • a branch amount adjusting means 27 that can be adjusted, and a branch control means (control device C) that controls the operation of the branch amount adjusting means 27 are provided.
  • the valve device 34 is an electric three-way valve.
  • the branch amount adjusting means 27 is an on-off valve or a flow rate adjusting valve. In the present embodiment, description of functional blocks of the heat supply system as shown in FIG. 3 is omitted.
  • control apparatus C as a branch control means makes the flow volume of the 1st heat medium in the branch flow path 26 relatively small by the branch amount adjustment means 27, when the heat recovery operation is performed.
  • the branch amount adjustment means 27 when the on-off valve as the branch amount adjusting means 27 is closed, the first heat medium does not flow through the branch flow path 26. Therefore, whether or not the first heat medium flows through the heat exchanger 28 is determined by the operation of the valve device 34 that is determined according to the temperature of the first heat medium after joining at the joining portion 21.
  • the control device C as the branch control means relatively increases the flow rate of the first heat medium in the branch flow path 26 by the branch amount adjusting means 27 when the preheating operation is performed.
  • the on-off valve as the branch amount adjusting means 27 when the on-off valve as the branch amount adjusting means 27 is opened, the flow resistance of the branch flow path 26 decreases, and the flow rate of the first heat medium flowing through the branch flow path 26 increases. That is, the amount of the first heat medium flowing from the heat exchanger 28 to the fourth portion 41 of the detour channel 24 via the branch channel 26 is relatively increased.
  • the preheating operation regardless of the temperature of the first heat medium, the heat recovered by the second heat medium from the operating boiler apparatus 1 is transferred to the first heat medium via the heat exchanger 28.
  • the heat held by the first heat medium can be used to increase the temperature of the internal combustion engine 52 of the cogeneration apparatus 50.
  • the distribution device D of the present embodiment is different from the distribution device D of the third embodiment in that the first heat medium that has passed through the heat exchanger 28 always passes through the valve device 34 during the preheating operation. ing.
  • the first heat medium flowing through the valve bypass circuit 23 does not pass through the valve device 34.
  • the first heat medium passes through the valve device 34 regardless of whether or not it flows through the branch flow path 26.
  • the effect of the temperature of the first heat medium rising due to the heat exchange with the second heat medium in the heat exchanger 28 appears greatly in the distribution device D of the fourth embodiment, but the distribution of the third embodiment Device D does not appear as large.
  • the difference of the structure of the distribution apparatus D of such 3rd Embodiment and 4th Embodiment is as a difference of the raise rate of the temperature of the 1st heating medium when performing a preheating operation so that it may describe below. May appear.
  • the first heat medium is heated without passing through the valve device 34 and the heat medium temperature sensor 22, and the first heat medium passing through the valve device 34 and the heat medium temperature sensor 22. It is divided into a first heat medium passing through the exchanger 28 and the valve bypass circuit 23. Even if the temperature of some of the first heat medium rises in the heat exchanger 28, the heat is used for preheating the internal combustion engine 52 of the combined heat and power supply device 50. The first heat medium after the decrease of the pressure returns to the distribution device D of the heat transfer device 20.
  • the temperature of the first heat medium flowing through the valve device 34 and the heat medium temperature sensor 22 does not increase moderately, and the valve device 34 increases the amount of the first heat medium flowing through the bypass channel 24, that is, heat
  • the state where the first heat medium passing through the exchanger 28 and the valve bypass 23 is not increased continues. That is, even if the temperature of the first heat medium rises in the heat exchanger 28 due to the preheating operation, the first heat medium does not pass through the valve device 34 and the heat medium temperature sensor 22, and therefore the first heat medium in the heat exchanger 28.
  • the influence on the valve device 34 due to the increase in the temperature of the medium is small.
  • the valve device 34 when the distribution device D of the fourth embodiment is used, all the first heat media that have passed through the heat exchanger 28 pass through the valve device 34 and the heat medium temperature sensor 22 during the preheating operation. Therefore, when the temperature of the first heat medium detected by the heat medium temperature sensor 22 is low, the valve device 34 operates so as to increase the amount of the first heat medium flowing through the bypass flow path 24. If the opening / closing valve 27 is opened, the amount of the first heat medium flowing into the valve device 34 via the heat exchanger 28, the branch flow path 26 and the bypass flow path 24 increases. That is, the first heat medium whose temperature has been raised by heat exchange with the second heat medium in the heat exchanger 28 always passes through the valve device 34 and the heat medium temperature sensor 22.
  • valve device 34 reduces the amount of the first heat medium flowing through the bypass flow path 24 as the temperature of the first heat medium rises, and more first heat medium passes through the heat exchanger 28. Will pass. And if the quantity of the 1st heating medium which flows into heat exchanger 28 increases, the amount of heat transfer from the 2nd heating medium to the 1st heating medium will increase, and the temperature rise of the 1st heating medium will be further promoted.
  • FIG. 10 is a diagram for explaining the operation of the heat transfer device 20 of the heat supply system of the fifth embodiment.
  • the distribution device D is provided in the fifth portion 42 of the bypass channel 24 between the branch portion 31 and the fourth portion 41, and flows from the fifth portion 42 toward the fourth portion 41.
  • a throttle valve 37 for limiting the flow rate of one heat medium is provided. That is, since the amount of the first heat medium flowing from the branch part 31 to the fourth part 41 of the bypass channel 24 is limited by the throttle valve 37, the branch flow rate adjusting means 27 causes the first heat medium to flow through the branch channel 26. If the flowing state is created, the amount of the first heat medium flowing from the heat exchanger 28 to the fourth portion 41 of the detour channel 24 via the branch channel 26 without passing through the throttle valve 37 is Relatively more.
  • the configuration of the valve device 34 may be changed.
  • the valve device 34 included in the distribution device D is a temperature-sensitive three-way valve.
  • the valve device 34 configured using a temperature-sensitive three-way valve is provided at the junction 21 from the first heat medium return path 11 to the bypass path 24.
  • the valve device 34 includes, for example, a temperature-sensitive material having a large coefficient of thermal expansion, and a valve body that is displaced in conjunction with expansion and contraction of the temperature-sensitive material.
  • the valve device 34 changes the degree of thermal expansion of the temperature-sensitive material according to the temperature of the first heat medium after the merging, and the valve body is displaced in conjunction with the degree of thermal expansion.
  • the ratio between the flow rate of the first heat medium flowing and the flow rate of the first heat medium flowing through the heat exchanger 28 is changed. That is, the valve device 34 has a flow rate of the first heat medium flowing through the bypass channel 24 and a flow rate of the first heat medium flowing through the heat exchanger 28 so that the temperature of the first heat medium after joining approaches a predetermined temperature. It works automatically to adjust the ratio. That is, unlike the example shown in the above embodiment, the heat medium temperature sensor 22 is not necessary.
  • valve device 34 examples include an automatic mixing valve (TM type) and a temperature control switching valve (TS type) sold by Kane Kogyo Co., Ltd., and a wax-type temperature control valve (GH5 type) sold by Fushiman Corporation. Etc. can be used.
  • TM type automatic mixing valve
  • TS type temperature control switching valve
  • GH5 type wax-type temperature control valve
  • valve device 34 a temperature-sensitive mixing valve capable of manually changing the predetermined temperature can be used.
  • the valve device 34 may include a manual operation unit that can change the positional relationship between the temperature-sensitive material and the valve body.
  • the valve device 34 is configured using a temperature-sensitive three-way valve configured to change the predetermined temperature, the temperature of the first heat medium flowing out from the valve device 34, that is, The temperature of the first heat medium flowing out from the heat transfer device 20 toward the cogeneration device 50 can be changed.
  • the temperature of the first heat medium that is, the temperature of the cooling water
  • the cogeneration device 50 used in combination with the heat transfer device 20 the above-mentioned
  • the first heat medium close to the temperature required by the combined heat and power supply device 50 can be supplied from the heat transfer device 20 to the combined heat and power supply device 50.
  • the heat supply system of the seventh embodiment is different from the above embodiment in the configuration of the flow path of the second heat medium.
  • description is abbreviate
  • FIG. 11 is a diagram illustrating the configuration of the heat supply system of the seventh embodiment.
  • the heat supply system causes the heat utilization unit 19 to flow by flowing the second heat medium from the second heat medium supply path 3 to the second heat medium return path 2 so as to bypass the heat utilization unit 19.
  • a unit bypass circuit 54 that can allow the second heat medium to flow into the heat transfer device 20 without going through, and a second heat medium adjusting means 55 that can adjust the flow rate of the second heat medium in the unit bypass circuit 54 are provided.
  • the second heat medium adjusting means 55 is an on-off valve or a flow rate adjusting valve.
  • the control device C relatively reduces the flow rate of the second heat medium in the unit bypass circuit 54 by the second heat medium adjusting means 55.
  • the on-off valve as the second heat medium adjusting means 55 is closed, the second heat medium does not flow in the unit bypass circuit 54.
  • at least one of the heating device 15 and the hot water storage device 16 uses the heat held by the second heat medium, at least one of the on-off valve 6 and the on-off valve 7 is opened.
  • the second heat medium can be circulated through the second heat medium supply path 3 and the second heat medium return path 2.
  • control device C relatively increases the flow rate of the second heat medium in the unit bypass circuit 54 by the second heat medium adjusting means 55 when the first operation as the preheating operation is performed.
  • the control device C relatively increases the flow rate of the second heat medium in the unit bypass circuit 54 by the second heat medium adjusting means 55 when the first operation as the preheating operation is performed.
  • the on-off valve as the second heat medium adjusting means 55 is opened, the resistance of the flow path in the unit bypass circuit 54 decreases, and the flow rate of the second heat medium flowing through the unit bypass circuit 54 increases. That is, when the preheating operation is performed, most of the heat recovered from the boiler device 1 does not pass through the heat utilization unit 19 (that is, the heat utilization unit 19 is not operated to use heat).
  • the second heat medium adjusting means 55 provided in the unit bypass circuit 54 is automatically opened when the pressure of the second heat medium on the upstream side becomes equal to or higher than a predetermined value, and allows the second heat medium to flow downstream.
  • the control device C operates the circulation pump 44 in a state where both the on-off valve 6 and the on-off valve 7 are closed.
  • the relief valve automatically opens and the unit bypass circuit 54 is opened.
  • the second heating medium flows.
  • the heat supply system of the eighth embodiment is different from the above-described embodiment in that the preheating operation is performed without operating the boiler device 1.
  • the heat supply system of 8th Embodiment is demonstrated below, description is abbreviate
  • the heat utilization unit of the heat supply system has a hot water storage device 16 as a heat storage unit capable of storing heat.
  • the hot water storage device 16 includes a tank 17 that stores heat in the form of hot water and a heat exchange unit 18. And in the heat exchange part 18, the heat exchange between the hot water stored in the tank 17 and the 2nd heat medium is performed. Therefore, the second heat medium can be heated with the heat of the hot water stored in the tank 17 without operating the boiler device 1.
  • the second heat medium receives heat from the operating boiler apparatus 1, and the temperature of the second heat medium flowing into the heat exchange unit 18 through the second heat medium supply path 3 is stored in the tank 17. If the temperature is higher than the temperature of the hot water, the heat exchange unit 18 of the hot water storage device 16 transfers heat from the second heat medium to the hot water. That is, the heat utilization unit 19 receives heat from the supplied second heat medium and stores it in the hot water storage device 16. On the other hand, the temperature of the second heat medium flowing into the heat exchanging unit 18 through the second heat medium supply path 3 is lower than the temperature of the hot water stored in the tank 17 when the boiler device 1 is not operating. If it is lower, heat is transferred from the hot water in the tank 17 to the second heat medium in the heat exchanging unit 18 of the hot water storage device 16. That is, in the heat utilization unit 19, the heat stored in the hot water storage device 16 is transferred to the supplied second heat medium.
  • the control device C uses the heat received by the second heat medium from the hot water storage device 16 of the heat utilization unit 19 as heat.
  • the first heat medium is caused to flow in the first heat medium supply path 12 and the first heat medium return path 11 so as to be transmitted to the first heat medium via the transmission device 20, and the boiler device 1 is not operated.
  • the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2, and the heat held by the first heat medium is used for increasing the temperature of the internal combustion engine 52 of the combined heat and power supply device 50.
  • the second operation is performed.
  • the control device C does not operate the boiler device 1, that is, when the second heat medium does not recover heat from the boiler device 1, FIG.
  • the on-off valve 6 is opened in the heat supply system shown in FIG. 5 and the circulation pump 44 is operated, so that the second heat medium passes through the hot water storage device 16 and the second heat medium supply path 3 and the second heat medium return path 2. To make it flowable. Then, the low-temperature second heat medium that has not recovered heat from the boiler device 1 flows into the heat exchange unit 18 of the hot water storage device 16.
  • the heat exchange unit 18 of the hot water storage device 16 the heat of the hot water stored in the tank 17 of the hot water storage device 16 is transferred to the second heat medium, and the temperature of the second heat medium rises. Then, the second heat medium whose temperature has risen flows into the heat transfer device 20 through the second heat medium return path 2. In this way, the heat received by the second heat medium from the hot water storage device 16 of the heat utilization unit 19 is transmitted to the first heat medium via the heat transfer device 20, and the heat held by the first heat medium is transferred to the thermoelectric.
  • a preheating operation is performed in which the internal combustion engine 52 of the co-feeder 50 is used for increasing the temperature.
  • the control apparatus C will heat the heat
  • the combined heat and power supply device 50 is operated so as to be transmitted to the second heat medium, the first heat medium is caused to flow in the first heat medium supply path 12 and the first heat medium return path 11, and the second heat A heat recovery operation is performed in which the second heat medium is caused to flow through the medium supply path 3 and the second heat medium return path 2 so that the heat used by the heat utilization unit 19 is utilized by the heat utilization unit 19.
  • the heat supply system of the ninth embodiment is different from the above-described embodiment in that the preheating operation in which the boiler device 1 is operated and the preheating operation in which the boiler device 1 is not operated are switched.
  • the heat supply system of 9th Embodiment is demonstrated below, description is abbreviate
  • the heat utilization unit 19 of the heat supply system has a hot water storage device 16 as a heat storage unit capable of storing heat.
  • the hot water storage device 16 includes a tank 17 that stores heat in the form of hot water and a heat exchange unit 18.
  • the tank 17 is provided with a plurality of temperature sensors 45 and 46 as temperature detecting units for measuring the temperature of the stored hot water. Therefore, if the temperature of hot water detected by one or both of the temperature sensors 45 and 46 is equal to or higher than a specific temperature, it can be considered that a predetermined amount or more of heat is stored in the hot water storage device 16.
  • the heat exchanger 18 cannot heat the second heat medium using the heat.
  • the control device C performs the preheating operation if the stop information is transmitted from the combined heat and power supply device 50 and a predetermined amount or more of heat is stored in the hot water storage device 16 of the heat utilization unit 19.
  • the first heat medium supply path 12 and the first heat medium feedback so that the heat received by the second heat medium from the hot water storage device 16 of the heat utilization unit 19 is transmitted to the first heat medium via the heat transfer device 20.
  • the first heat medium is caused to flow in the path 11, the boiler device 1 is not operated, and the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2.
  • a second operation is performed in which the heat held by the heat medium is used to increase the temperature of the internal combustion engine 52 of the cogeneration apparatus 50.
  • the control device C detects hot water detected by one or both of the temperature sensors 45 and 46. If the temperature is equal to or higher than a specific temperature, that is, if a predetermined amount or more of heat is stored in the hot water storage device 16 of the heat utilization unit 19, the preheating operation (first operation) is performed using the heat stored in the hot water storage device 16. 2 operation).
  • the control device C does not operate the boiler device 1, operates the circulation pump 44, opens the on-off valve 6, and closes the on-off valve 7. Then, the second heat medium flows in the second heat medium supply path 3 and the second heat medium return path 2 via the hot water storage device 16 and the heat transfer device 20.
  • the low-temperature second heat medium that has not recovered heat from the boiler device 1 flows into the heat exchanging unit 18 of the hot water storage device 16, and the hot water storage device 16 stores the heat stored in the hot water storage device 16 in the second heat medium. Is passed, and the temperature of the second heat medium rises. Then, the second heat medium whose temperature has risen flows into the heat transfer device 20 through the second heat medium return path 2. In this way, the heat received by the second heat medium from the hot water storage device 16 of the heat utilization unit 19 is transmitted to the first heat medium via the heat transfer device 20, and the heat held by the first heat medium is transferred to the thermoelectric.
  • a preheating operation (second operation) in which the internal combustion engine 52 of the co-feeder 50 is used for increasing the temperature is performed.
  • the control device C performs the preheating operation. Perform one operation. That is, in the first operation, the first heat medium supply path 12 and the first heat medium are transmitted so that the heat recovered by the second heat medium from the boiler device 1 is transmitted to the first heat medium via the heat transfer device 20. The first heat medium is caused to flow in the return path 11, the boiler device 1 is operated, and the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2. In this operation, the heat held by the heat medium is used to increase the temperature of the internal combustion engine 52 of the combined heat and power supply device 50.
  • the control device C detects hot water detected by one or both of the temperature sensors 45 and 46. If the temperature is not higher than a specific temperature, that is, if a predetermined amount or more of heat is not stored in the hot water storage device 16 of the heat utilization unit 19, the preheat operation (first operation) is performed using the heat recovered from the boiler device 1. )I do.
  • the control device C operates the boiler device 1, operates the circulation pump 44, and opens at least one of the on-off valve 6 and the on-off valve 7. Then, the second heat medium flows in the second heat medium supply path 3 and the second heat medium return path 2 via the operating boiler device 1 and the heat transfer device 20.
  • the high-temperature second heat medium that has recovered heat from the boiler device 1 flows into the heat transfer device 20 through the second heat medium return path 2.
  • the heat received by the second heat medium from the boiler device 1 is transmitted to the first heat medium via the heat transfer device 20, and the heat held by the first heat medium is stored in the internal combustion engine 50.
  • a preheating operation (first operation) in which the engine 52 is used to increase the temperature is performed.
  • the control apparatus C will heat the heat
  • the combined heat and power supply device 50 is operated so as to be transmitted to the second heat medium, the first heat medium is caused to flow in the first heat medium supply path 12 and the first heat medium return path 11, and the second heat A heat recovery operation is performed in which the second heat medium is caused to flow through the medium supply path 3 and the second heat medium return path 2 so that the heat used by the heat utilization unit 19 is utilized by the heat utilization unit 19.
  • ⁇ Tenth Embodiment> The heat supply system of the tenth embodiment switches between a preheating operation in which the boiler device 1 is operated and a preheating operation in which the boiler device 1 is not operated, and adjusts the flow rate of the second heat medium in the unit bypass circuit 54. This is different from the above embodiment.
  • the heat supply system of 10th Embodiment is demonstrated below, description is abbreviate
  • the heat utilization unit 19 of the heat supply system has a hot water storage device 16 as a heat storage unit capable of storing heat.
  • the hot water storage device 16 includes a tank 17 that stores heat in the form of hot water and a heat exchange unit 18.
  • the tank 17 is provided with a plurality of temperature sensors 45 and 46 as temperature detection units for measuring the temperature of the stored hot water. Therefore, if the temperature of hot water detected by one or both of the temperature sensors 45 and 46 is equal to or higher than a specific temperature, it can be considered that a predetermined amount or more of heat is stored in the hot water storage device 16.
  • the heat exchanger 18 cannot heat the second heat medium using the heat.
  • the heat supply system allows the second heat medium to flow from the second heat medium supply path 3 to the second heat medium return path 2 so as to bypass the heat utilization unit 19.
  • the unit bypass circuit 54 that allows the second heat medium to flow into the heat transfer device 20 without passing through the heat utilization unit 19, and the second heat that can adjust the flow rate of the second heat medium in the unit bypass circuit 54
  • a medium adjusting means 55 is provided. Therefore, by adjusting the opening degree of the second heat medium adjusting means 55, the flow rate of the second heat medium in the unit bypass circuit 54 is relatively reduced, and a relatively large amount of the second heat medium is stored in the hot water storage device.
  • the operation of flowing through 16 and the operation of flowing a large amount of the second heat medium without passing through the hot water storage device 16 by relatively increasing the flow rate of the second heat medium in the unit bypass circuit 54 Can also be switched.
  • control device C changes the flow rate of the second heat medium in the unit bypass circuit 54 when the heat recovery operation is performed and when the second operation as the preheating operation is performed.
  • the flow rate of the second heat medium in the unit bypass circuit 54 is relatively decreased by the second heat medium adjusting unit 55. To more.
  • control device C performs the preheating operation if the stop information is transmitted from the combined heat and power supply device 50 and a predetermined amount or more of heat is stored in the hot water storage device 16 of the heat utilization unit 19.
  • the first heat medium supply path 12 and the second heat medium are transferred so that the heat received by the second heat medium from the hot water storage device 16 of the heat utilization unit 19 is transmitted to the first heat medium via the heat transfer device 20.
  • the first heat medium is caused to flow in the first heat medium return path 11, the boiler device 1 is not operated, and the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2.
  • the flow rate of the second heat medium in the unit bypass circuit 54 is relatively reduced by the second heat medium adjusting means 55, and the heat held by the first heat medium is changed to the temperature of the internal combustion engine 52 of the combined heat and power supply device 50. Use it for climbing.
  • the control device C detects hot water detected by one or both of the temperature sensors 45 and 46. If the temperature is equal to or higher than a specific temperature, that is, if a predetermined amount or more of heat is stored in the hot water storage device 16 of the heat utilization unit 19, the preheating operation (first operation) is performed using the heat stored in the hot water storage device 16. 2 operation).
  • the control device C does not operate the boiler device 1, operates the circulation pump 44, closes the on-off valve as the second heat medium adjusting means 55, and opens the on-off valve 6. And the on-off valve 7 is closed.
  • the second heat medium flows in the second heat medium supply path 3 and the second heat medium return path 2 via the hot water storage device 16 and the heat transfer device 20.
  • the low-temperature second heat medium that has not recovered heat from the boiler device 1 flows into the heat exchanging unit 18 of the hot water storage device 16, and the hot water storage device 16 stores the heat stored in the hot water storage device 16 in the second heat medium. Is passed, and the temperature of the second heat medium rises. Then, the second heat medium whose temperature has risen flows into the heat transfer device 20 through the second heat medium return path 2.
  • thermoelectric thermoelectric
  • the control device C performs the preheating operation.
  • the first heat medium supply path 12 and the first heat medium return path 11 are so transmitted that the heat recovered by the second heat medium from the boiler device 1 is transmitted to the first heat medium via the heat transfer device 20.
  • the first heat medium is caused to flow, the boiler device 1 is operated, the second heat medium is caused to flow in the second heat medium supply path 3 and the second heat medium return path 2, and the unit bypass circuit 54
  • the flow rate of the second heat medium in the first heat medium is relatively increased by the second heat medium adjusting means 55, and the heat held by the first heat medium is used for increasing the temperature of the internal combustion engine 52 of the cogeneration apparatus 50.
  • the control device C detects hot water detected by one or both of the temperature sensors 45 and 46. If the temperature is not higher than a specific temperature, that is, if a predetermined amount or more of heat is not stored in the hot water storage device 16 of the heat utilization unit 19, the preheat operation (first operation) is performed using the heat recovered from the boiler device 1. )I do.
  • the control device C operates the boiler device 1, operates the circulation pump 44, opens the on-off valve as the second heat medium adjusting means 55, and closes the on-off valve 6. And the on-off valve 7 is closed.
  • the second heat medium flows through the second heat medium supply path 3 and the second heat medium return path 2 via the boiler apparatus 1 and the heat transfer apparatus 20 that are in operation without passing through the hot water storage device 16.
  • the high-temperature second heat medium that has recovered heat from the boiler device 1 flows into the heat transfer device 20 through the unit bypass circuit 54 and the second heat medium return path 2.
  • the heat received by the second heat medium from the boiler device 1 is transmitted to the first heat medium via the heat transfer device 20, and the heat held by the first heat medium is stored in the internal combustion engine 50.
  • a preheating operation (first operation) in which the engine 52 is used to increase the temperature is performed.
  • the control apparatus C will heat the heat
  • the combined heat and power supply device 50 is operated so as to be transmitted to the second heat medium, the first heat medium is caused to flow in the first heat medium supply path 12 and the first heat medium return path 11, and the second heat The second heat medium is caused to flow in the medium supply path 3 and the second heat medium return path 2, and the flow rate of the second heat medium in the unit bypass circuit 54 is relatively decreased by the second heat medium adjusting means 55. Then, a heat recovery operation is performed in which the heat of the second heat medium is utilized by the heat utilization unit 19.
  • the configuration of the heat transfer device 20 has been described with a specific example, but the configuration can be appropriately changed.
  • the expansion tank 29 may be provided in the middle of the first heat medium supply path 12.
  • the valve apparatus 34 showed the example comprised using one three-way valve, you may comprise using a some two-way valve.
  • the throttle valve 35 as a flow rate regulator is provided has been described, but a configuration in which the throttle valve 35 is not provided may be employed.
  • the present invention can be used for a heat supply system that can start an internal combustion engine satisfactorily without using a special device such as a heater.
  • Second heat source device Second heat medium return path 3 Second heat medium supply path 11 First heat medium return path 12 First heat medium supply path 19 Heat utilization unit 20 Waste heat recovery device (heat transfer device) 21 Junction site 22 Heat medium temperature sensor (first temperature detection means) 23 valve bypass circuit 24 bypass flow path 25 bypass amount adjustment means 26 branch flow path 27 branch amount adjustment means 28 heat exchanger 31 branch part 34 valve device 37 throttle valve 38 first part 39 second part 40 third part 41 fourth Part 42 Fifth part 50 Combined heat and power supply device (first heat source device) 52 internal combustion engine 53 environmental temperature sensor 54 unit bypass circuit 55 second heat medium adjusting means C control device (valve control means, bypass control means, branch control means) D Dispenser

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Abstract

Dispositif de commande (C) d'un système d'alimentation en carburant conçu de manière à effectuer une opération de préchauffage consistant à utiliser la chaleur d'un premier milieu chauffant pour augmenter la température d'un moteur à combustion interne (52) d'un premier dispositif de source de chaleur (50) si la température ambiante, qui pourrait influer sur le démarrage du moteur à combustion interne (52), est inférieure à une valeur seuil de basse température prescrite lorsque le moteur à combustion interne (52) est démarré. Pour l'opération de préchauffage est réalisée une première opération dans laquelle le premier milieu chauffant est amené à s'écouler dans un premier canal d'alimentation en milieu chauffant (12) et un premier canal de retour de milieu chauffant (11), un second dispositif de source de chaleur (1) est actionné, et un second agent chauffant est amené à s'écouler dans un second canal d'alimentation en milieu chauffant (3) et un second canal de retour de milieu chauffant (2) de telle sorte que la chaleur du second milieu chauffant récupérée à partir du second dispositif de source de chaleur (1) est transmise au premier milieu chauffant par le biais d'un dispositif de transmission de chaleur (20), amenant la chaleur du premier milieu chauffant à être utilisée pour augmenter la température du moteur à combustion interne (52) du premier dispositif de source de chaleur (50).
PCT/JP2016/088161 2015-12-21 2016-12-21 Système d'alimentation en chaleur WO2017110900A1 (fr)

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JP2003247750A (ja) * 2002-02-25 2003-09-05 Shinko Electric Co Ltd コージェネレータ、給湯システムおよびエンジン暖機システム
JP2004263915A (ja) * 2003-02-28 2004-09-24 Noritz Corp 給湯装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3530923A1 (fr) * 2018-02-21 2019-08-28 Innio Jenbacher GmbH & Co OG Procédé de préchauffage d'un moteur à combustion interne au moyen d'un refroidisseur d'huile et d'eau de chemise
US10767545B2 (en) 2018-02-21 2020-09-08 Innio Jenbacher Gmbh & Co Og Method of pre-heating a internal combustion engine by oil and jacket water cooler

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