JP2006207914A - Heat source system utilizing waste heat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To add a system performing heating by utilizing waste heat of a generator with a simple constitution, to a system for heating hot water in a hot water storage tank by utilizing the waste heat of the generator. <P>SOLUTION: The waste heat of the generator 30 is absorbed by allowing waste heat absorbing fluid circulated in a master waste heat circulating passage 6 to pass through the generator 30. The hot water in a hot water storage tank 8 is circulated in a tank hot water circulating passage 9, and the hot water in the hot water storage tank 8 is heated by the waste heat absorbing fluid by heat exchange in a liquid-liquid heat exchanger 12. The heat load circulating fluid circulated in a heat load circulating passage 22 is allowed to pass through a heating device 1, and the heat of heat load circulating fluid from the heating device 1 is radiated for heating. The heat load circulating fluid is heated by the heat of waste heat absorbing fluid by heat exchange in a liquid-liquid heat exchanger 24. A temperature of the heat load circulating fluid is detected by a heat load-side temperature sensor 27, and a flow rate of the heat load circulating fluid is controlled by a water quantity control valve 26 so that a temperature of the heat load circulating fluid supplied to the heating device 1 is controlled to a set temperature. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a waste heat utilization heat source system that utilizes waste heat of a power generator as a heating source for hot water supply or heating.

  In recent years, cogeneration systems have attracted attention from the viewpoint of promoting energy saving. The cogeneration system, for example, circulates the cooling water supplied to the power generation device, absorbs the waste heat generated in the power generation device into the cooling water, absorbs the waste heat, and reaches a high temperature and a tank (hot water storage). Heat is exchanged with the hot water stored in the tank) to heat the hot water in the tank, and the cooling water lowered in temperature by this heat exchange is circulated and supplied to the power generator again to cool the power generator (the waste of the power generator) Heat absorption).

JP2003-120998A

  As described above, the cogeneration system is used to use the waste heat of the power generation apparatus as a heating source for hot water supply. As a heating source other than hot water, a system as a heating source (heat source) for hot water and a heating source other than hot water by constructing a system that has a function as a heating source for hot water and a function as a heating source other than hot water. I am convinced that it will be easier to construct the system than to construct these systems separately, the construction cost will be lower, and the cogeneration system will become more popular and convenient. However, such a system has not been proposed.

  The present invention has been made in view of the above circumstances, and its purpose is to provide a waste heat utilization heat source system (cogeneration system) having both a function as a heating source for hot water supply and a function as a heating source other than hot water supply. It is to provide.

  In order to achieve the above object, the present invention is a means for solving the problems with the following configuration. That is, the first invention has a hot water storage tank for storing hot water for hot water supply, and a main waste heat circulation path for circulating the waste heat endothermic fluid that has absorbed the waste heat of the power generator, Is a waste heat utilization heat source system provided with a hot water supply side heat exchanging means for heating the hot water in the hot water storage tank by exchanging heat between the waste heat absorbing fluid and the hot water in the hot water storage tank. A heat load side outgoing pipe for supplying the waste heat endothermic fluid to the load device is branched and connected, and a heat load side return pipe for returning the waste heat endothermic fluid from the heat load device to the main waste heat circuit is the heat It is connected to the downstream side of the branch connection portion of the load side outgoing pipe, and the waste heat absorption fluid supplied from the thermal load side outgoing pipe is passed through the thermal load device to return to the thermal load side. A heat load pipe is provided for delivery to the pipe, and the heat Main waste heat circulation path part leading to the branch connection part of the load side outgoing pipe, the thermal load side outgoing pipe, the thermal load pipe, the thermal load side return pipe, and the connection part of the thermal load side return pipe to the power generator The flow path that passes through the main waste heat circulation path part to the heat exhaust side circulation path is formed as a heat load side circulation path, and the flow path of the waste heat endothermic fluid is switched between the main waste heat heat circulation path and the heat load side circulation path. The structure provided with the switching means is a means for solving the problem.

  Moreover, 2nd invention is provided with the structure of the said 1st invention, The branch connection part of the said heat load outgoing pipe and the connection part of a heat load side return pipe are changed from a power generator to the hot water supply side heat exchange means. It is connected to the main waste heat circuit.

  Furthermore, the third invention has a hot water storage tank for storing hot water for hot water supply, and a main waste heat circulation path for circulating the waste heat endothermic fluid that has absorbed the waste heat of the power generation device, and the main waste heat heat circulation path Is a waste heat utilization heat source system provided with hot water supply side heat exchanging means for exchanging heat between the waste heat absorbing fluid and hot water in the hot water storage tank to heat the hot water in the hot water storage tank, and separate from the main waste heat circulation path A heat load side circulation path for circulating the heat load side circulation fluid, the heat load side circulation path including a heat load line for passing the heat load side circulation fluid, and a heat load A heat load circulation pump that circulates and drives the heat load circulation fluid in the side circulation path, and a circulation flow rate control means that adjusts the circulation flow rate of the heat load circulation fluid, the main waste heat circulation path and the heat load side Circulation that makes the heat load circulating fluid absorb the heat of the waste heat endothermic fluid side between the circulation path An interbody heat exchanging means is provided, and a heat load side fluid temperature detecting means for detecting the temperature of the heat load circulating fluid is provided at the position of the heat load side circulation path downstream of the circulating fluid heat exchanging means. The amount of adjustment of the circulation flow rate in the heat load side circulating fluid of the circulation flow rate control means is set so that the temperature of the heat load circulating fluid becomes a specified temperature based on the temperature detected by the heat load side fluid temperature detection means. The heat load fluid temperature control means for controlling is configured as means for solving the above problems.

  Furthermore, the fourth invention has a hot water storage tank for storing hot water for hot water supply, and a main waste heat circulation path for circulating the waste heat endothermic fluid that has absorbed the waste heat of the power generation device, Is a waste heat utilization heat source system provided with hot water supply side heat exchange means for heating the hot water in the hot water storage tank by exchanging heat between the waste heat absorbing fluid and the hot water in the hot water storage tank. A circulation flow rate control means for adjusting the circulation flow rate of the waste heat endothermic fluid circulating in the main waste heat circulation path is provided, and the heat load side for circulating the heat load side circulation fluid is provided separately from the main waste heat circulation path A heat load device having a heat load line through which the heat load side circulating fluid passes, and a heat load circulating fluid in the heat load side circuit. A heat load side circulation pump is interposed, and the main waste heat circulation path and the heat load side circulation path In between, there is provided a heat exchange means between circulating fluids that absorbs the heat on the waste heat endothermic fluid side into the heat load circulating fluid, and at the position of the heat load side circulation path downstream of the heat exchange means between the circulating fluids. Thermal load side fluid temperature detecting means for detecting the temperature of the thermal load circulating fluid is provided, and the temperature of the thermal load circulating fluid is set to a specified temperature based on the detected temperature of the thermal load side fluid temperature detecting means. Thus, the heat load fluid temperature control means for controlling the adjustment amount of the circulation flow rate in the waste heat endothermic fluid of the circulation flow rate control means is provided as means for solving the problems.

  Further, the fifth invention is the one provided with the configuration of the fourth invention, wherein the main waste heat circulation path is provided with a bypass passage that bypasses the heat exchange means between the circulating fluids, and the circulation flow rate control means is The heat load fluid temperature control is configured to adjust the flow rate of the waste heat endothermic fluid flowing to the heat exchange means between the circulating fluids by changing the flow rate ratio between the flow rate of the heat exchange fluid between the circulation fluids and the flow rate of the bypass passage. The means is configured to control the temperature of the heat load circulating fluid by controlling the flow rate ratio of the circulating flow rate control means.

  Furthermore, the sixth invention comprises the structure of any one of the first to fifth inventions, wherein the heat load circuit is provided with a heating means at a position upstream of the heat load device. When the temperature of the input heat load circulating fluid is lower than a preset temperature, the temperature of the heat load circulating fluid is increased to the set temperature and directed to the heat load device. And sending out.

  Furthermore, a seventh invention comprises the configuration of any one of the second to sixth inventions, wherein the heat exchange means between the circulating fluid, the heat load side circulation pump, the circulation flow rate control means, the heat The load-side fluid temperature detecting means is assembled into an optional unit, in which the waste heat endothermic fluid enters the heat exchange means between the circulating fluid and the waste heat endothermic fluid is between the circulating fluid heat. The outlet of the waste heat absorption fluid sent out from the exchange means to the outside of the unit, the inlet through which the heat load circulating fluid enters the heat exchange means between the circulating fluids, and the heat load circulating fluid from the heat exchange means between the circulating fluids to the outside of the unit An outlet for the heat load circulating fluid to be sent out, and an inlet and an outlet for the waste heat endothermic fluid are connected to corresponding connection positions of the main waste heat circulation path, and an inlet and an outlet for the heat load circulating fluid Is connected to the corresponding connection position on the circulation line on the heat load side. And characterized in that a configuration that is.

  Further, the eighth invention is the one provided with the configuration of the sixth invention, wherein the heat exchange means between the circulating fluid, the circulation flow rate control means, and the heat load side fluid temperature detection means are assembled into an optional unit. The optional unit includes an inlet through which the waste heat endothermic fluid enters the heat exchange means between the circulating fluids, and a waste heat endothermic fluid that is sent out of the unit from the heat exchange means between the circulating fluids. An outlet, an inlet through which the heat load circulating fluid enters the heat exchange means between the circulating fluids, and an outlet of the heat load circulating fluid from which the heat load circulating fluid is sent out of the unit from the heat exchange means between the circulating fluids are provided. The inlet and outlet of the waste heat endothermic fluid are connected to the corresponding connection positions of the main waste heat circulation path, and the inlet and outlet of the heat load circulation fluid are connected to the corresponding connection positions of the heat load side circulation pipe. It is characterized by having a configuration.

  Further, a ninth invention is the one provided with any one of the first to eighth inventions, wherein the waste heat endothermic fluid and the heat load circulating fluid are hot water, and the heat load device is a heat load pipe. It is set as the structure which is the heating apparatus made into the hot water pipe through which warm water distribute | circulates.

  According to the first to ninth inventions, using the waste heat of the power generation device, a function as a heating source for hot water in a hot water storage tank, and a function as a heating source for a heat load device such as a heating device Can be demonstrated. In this way, since one system has both a function as a heating source of hot water for hot water supply and a function as a heating source for a heat load device, it is possible to share a part of the system that constitutes each function. Compared with the case where functions are constructed by separate and independent systems, system construction is simplified, and system construction costs can be reduced.

  According to the third to ninth aspects, the circulation flow rate of the heat load side circulating fluid or the waste heat endothermic fluid is controlled according to the temperature of the heat load circulating fluid detected by the heat load side fluid temperature detecting means. Therefore, the heat exchange amount per unit flow rate in the heat exchange means between the circulating fluid between the heat load side circulating fluid and the waste heat endothermic fluid is controlled so that the temperature of the heat load circulating fluid becomes the set temperature. By supplying the load device with the heat load side circulating fluid at the set temperature, the function as a heating source of the heat load device can be improved and stabilized. Moreover, since the temperature control of the heat load circulating fluid is configured to control the circulation flow rate of the heat load circulating fluid or the waste heat endothermic fluid, the temperature control of the heat load circulating fluid can be performed with a simple device configuration.

  In particular, in the sixth to ninth inventions, since the heat source device is interposed in the heat load side circulation path, the amount of heat exchange in the heat exchange means between the circulating fluids sets the temperature of the heat load circulating fluid to the set temperature. Even if only a short heat exchange amount that does not reach the heat exchange amount required to increase the temperature can be obtained, the heat exchange amount can be supplemented by the heat source unit, and it is always stable when the heat load device is in operation. Thus, the heat load circulating fluid having the set temperature can be supplied to the heat load device, and the reliability of the function as the heating source of the heat load device can be further enhanced.

  Further, in the seventh to ninth inventions, the temperature of the heat exchanging fluid, the component that performs heat exchange between the waste heat endothermic fluid passing through the main waste heat circulation path and the heat load circulating fluid passing through the heat load side circulation path, or Since the components that control the system are integrated as an optional unit, the waste heat utilization heat source system of the present invention can be constructed simply by connecting this optional unit to the main waste heat circulation path and the path (pipe) on the heat load device side. As a result, the system can be easily constructed, and the cost of system construction can be reduced.

  In particular, when a heat load device is added to a facility (for example, a high school) that already has a hot water supply heat source system in which a power generation device and a hot water storage tank are connected by a main waste heat circulation path (for example, a high school) If you install a heating device as a heat load device and convert a high school into a nursing home), you do not need to build a dedicated system for the heat load device. Because the system (the waste heat utilization heat source system of the present invention) is constructed by adding the system of the heat load device to the hot water supply heat source system simply by connecting the option unit connected to the heat load device to the divided pipe line Improvement of equipment diversion is very easy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that, in each embodiment (embodiment example), common reference numerals are given to components common to the above-described embodiment, and redundant description in the following embodiment is omitted or simplified.

  FIG. 1 shows a first embodiment (first embodiment) of a waste heat utilization heat source system according to the present invention. The waste heat utilization heat source system according to the first embodiment includes a hot water supply unit 7, a heating device 1 as a heat load device, a control device 21, and a waste heat endothermic fluid between the hot water supply unit 7 and the power generation device 30. The main waste heat circulation path 6 that circulates the cooling water and the heat load side circulation path 22 that circulates the cooling water as the waste heat endothermic fluid between the heating device 1 and the power generation device 30. Yes.

  The power generation device 30 is a device having a power generation function, such as an engine generator, a turbine generator, or a fuel cell, and generates waste heat along with the power generation operation. The main waste heat circulation path 6 circulates cooling water (waste heat endothermic fluid) through the power generator 30 and absorbs and recovers the waste heat generated by the power generator 30 into the cooling water. In the example of FIG. 1, a three-way valve 18, a liquid-liquid heat exchanger 12, a cistern 13, and a main circulation pump 14 are interposed in the main waste heat circulation path 6. A main pipe waste heat circulation path 6 constitutes a pipe line that returns to the power generator 30 through the valve 18, the liquid-liquid heat exchanger 12, the cistern 13, and the main circulation pump 14 in this order. Circulation driving of the cooling water (waste heat endothermic fluid) through the main waste heat circulation path 6 is performed by operation of the main circulation pump 14.

  The hot water supply unit 7 includes a hot water storage tank 8 and a tank hot water circulation path 9 for circulating hot water in the hot water storage tank 8. The tank hot water circulation path 9 is provided with a water amount control valve 10, a tank circulation pump 11, and a liquid-liquid heat exchanger 12 as hot water supply side heat exchange means, and drives the tank circulation pump 11. Thus, the hot water in the hot water storage tank 8 passes from the hot water storage tank 8 through the water amount control valve 10, the tank circulation pump 11, the liquid-liquid heat exchanger 12, and returns to the hot water storage tank 8 in this order. Circulation driven.

  The liquid-liquid heat exchanger 12 is filled with, for example, water as a heat transfer medium. The liquid-liquid heat exchanger 12 includes a main waste heat circulation path 6 and a tank hot water circulation path 9. Hot water stored in the tank hot water circulation path 9 passes through the pipe and heat of the cooling water (waste heat endothermic fluid) circulating through the main waste heat circulation path 6 through the heat medium in the liquid-liquid heat exchanger 12. Heat is absorbed by the hot water in the tank 8. That is, heat exchange is performed between the cooling water passing through the main waste heat circulation path 6 and the hot water (hot water in the hot water supply tank) in the hot water storage tank 8 passing through the tank hot water circulation path 9, and the temperature of the hot water in the hot water storage tank 8 is the hot water supply. The temperature is raised to a suitable temperature and stored in the hot water storage tank 8. A hot water supply pipe 15 is connected to the hot water storage tank 8, and hot water in the hot water storage tank 8 is supplied to the outside through the hot water supply pipe 15. A water supply pipe 16 is connected to the hot water storage tank 8 via a pressure reducing valve 17, and the amount of water reduced by the hot water supply is replenished into the hot water storage tank 8 through the water supply pipe 16.

  The heating device 1 has a heat load pipe through which the cooling water (waste heat endothermic fluid) is passed. Cooling water (high temperature cooling water that has absorbed the waste heat of the power generator 30) is passed through the heat load pipe. When the water is passed through, the heat is radiated from the heating device 1 and the room where the heating device 1 is installed is heated. Although the apparatus of various structures can be employ | adopted as the heating apparatus 1, as an example, the heating mat 1 which functions as the heating apparatus 1 of floors, such as a flooring, is shown by FIG.

  In this heating mat 1, joists 3 as aggregates are arranged on mat members 2, and hot water pipes 4 as heat load pipes are routed and laid on the mat members 2 while detouring these joists 3. A header 5 is disposed on the mat member 2, and an outlet end of the heat load side outgoing pipe 19 and an inlet end of the heat load side return pipe 20 are connected to the header 5. In the example of FIG. 6, one end side of two hot water pipes 4 a and 4 b laid next to each other is connected to the right side of the header 5, and the other end side of the hot water pipes 4 a and 4 b is connected to the left side of the header 5. .

  Inside the header 5, a flow path for distributing the hot water (the waste heat absorption fluid) supplied from the heat load side outgoing pipe 19 to the hot water pipe 4 a connected to the right side and the hot water pipe 4 b connected to the left side. In addition, a flow path is formed in which the warm water returning from the right hot water pipe 4 b and the warm water returning from the left hot water pipe 4 a are integrated and sent to the heat load side return pipe 20. When the hot water passes through the hot water pipes 4a and 4b, the heat of the hot water is radiated from the surface of the heating mat 1, and floor heating of the room where the heating mat 1 is laid is performed. In general, a heat radiating plate such as an aluminum foil is attached to the surface of the mat member 2 in order to enhance heat dissipation characteristics. However, since the configuration of the heating mat 1 itself is well known, Detailed description is omitted.

  As shown in FIG. 1, the inlet end side of the heat load side outgoing pipe 19 is branched and connected to the main waste heat circulation path 6 via a three-way valve 18, and the outlet end of the heat load side return pipe 20 is also main waste. It is connected to the heat circulation path 6, and the connection position of the outlet end of the heat load side return pipe 20 is downstream of the branch connection portion on the inlet end side of the heat load side outgoing pipe 19. In the example of FIG. 1, both of the branch connection portion on the inlet end side of the heat load side outgoing pipe 19 and the connection portion on the outlet end side of the heat load side return pipe 20 are connected from the power generator 30 to the liquid-liquid heat exchanger. 12 to the main waste heat circulation path 6.

  From the power generation device 30, the three-way valve 18 (branch connection part of the heat load side outgoing pipe 19), the heat load side outgoing pipe 19, the heating mat (heating device) 1, the heat load side return pipe 20, and the liquid-liquid heat exchanger 12. The path (flow path) that returns to the power generator 30 through the systern 13 and the main circulation pump 14 in this order constitutes a heat load side circulation path 22. Among the paths of the thermal load side circulation path 22, the path from the power generator 30 to the branch connection part (three-way valve 18) of the thermal load side outgoing pipe 19 and the connection part of the thermal load side return pipe 20, liquid − The path from the liquid heat exchanger 12, the cistern 13, and the main circulation pump 14 to the power generation device 30 is a path that is combined with the main waste heat circulation path 6. The three-way valve 18 functions as a flow path switching means, and selectively selects the flow of the cooling water (waste heat endothermic fluid) between the flow passing through the main waste heat circulation path 6 and the flow passing through the heat load side circulation path 22. It is to switch.

  The control device 21 controls the operation of the waste heat utilization heat source system, and controls the operation of the water amount control valve 10, the tank circulation pump 11, the main circulation pump 14, the three-way valve 18 and the like according to an operation control program given in advance. . A remote controller 23 that commands on / off of the system operation or commands on / off of the operation of the heating device (heating mat) 1 is wirelessly or wiredly connected to the control device 21 as necessary.

  Next, the control operation of the waste heat utilizing heat source system by the control device 21 will be briefly described. When the power generator 30 is in operation, the main circulation pump 14 is driven. At this time, when the ON command (operation command) of the heating device 1 is not issued from the remote controller 23 or the like, the three-way valve 18 is connected to the main pump 18. Switching to the waste heat circulation path 6 side, the main circulation pump 14 is driven. Then, when the cooling water circulates through the main waste heat circulation path 6 and passes through the power generation device 30, the waste heat of the power generation device 30 is absorbed and the temperature of the cooling water is increased to, for example, 70 to 80 ° C. The hot water in the hot water storage tank 8 circulates in the tank hot water circulation path 9 by driving the tank circulation pump 11 simultaneously with the driving of the main circulation pump 14 or at a predetermined timing.

Hot water circulating in the tank hot water circulation path 9 is heated by heat exchange with high-temperature cooling water passing through the main waste heat circulation path 6 when passing through the liquid-liquid heat exchanger 12, and the hot water temperature is increased. The hot water inside is maintained at a hot water temperature suitable for hot water supply. If necessary, a temperature sensor that detects the temperature of the cooling water entering the liquid-liquid heat exchanger 12 and a temperature sensor that detects the temperature of the hot water in the hot water storage tank 8 are provided, and the temperature of the cooling water (T _W ) The water flow rate of the water amount control valve 10 may be controlled in accordance with a temperature difference ΔT (0 <ΔT = T _W −T _H ) with the temperature (T _H ) of the hot water in the hot water storage tank 8. In this case, as the temperature difference ΔT becomes smaller, the water flow rate of the water amount control valve 10 is gradually reduced so that the hot water temperature returned from the liquid-liquid heat exchanger 12 to the hot water storage tank 8 is further increased. Further, when the temperature difference ΔT becomes smaller than a predetermined threshold value or when the temperature of the cooling water (T _W ) becomes equal to or lower than the temperature of the hot water in the hot water storage tank 8 (T _H ), the tank circulation pump 11 The control configuration such as stopping is taken.

  When an operation command for the heating device 1 is applied to the control device 21 from the remote controller 23 or the like, the three-way valve 18 is switched to the heat load side circulation path 22 side. As a result, the cooling water (waste heat absorption fluid) circulates in the heat load side circulation path 22. In other words, the high-temperature cooling water discharged from the power generation device 30 is supplied from the three-way valve 18 to the heating device 1 via the heat load side outgoing pipe 19, and the heat of the high-temperature cooling water passing through the heat load pipeline of the heating device 1 is heated. Heat is performed by radiating heat from the apparatus 1. The high-temperature cooling water that has passed through the heat load side return pipe 20 from the outlet of the heat load pipeline of the heating device 1 is supplied to the liquid-liquid heat exchanger 12 and, as described above, in the liquid-liquid heat exchanger 12 Thus, the hot water in the hot water storage tank 8 is heated by heat exchange between the cooling water passing through the heat load side circulation path 22 and the hot water passing through the tank hot water circulation path 9. The cooling water lowered in temperature by the heat exchange in the liquid-liquid heat exchanger 12 is supplied again to the power generation device 30, and the power generation device 30 is cooled, that is, the waste heat of the power generation device 30 is absorbed, and the temperature is raised again. The heat load side circulation path 22 is circulated toward the heating device 1, and the heating of the heating device 1 and the hot water in the hot water storage tank 8 are continuously performed.

  According to this embodiment, the hot water in the hot water storage tank 8 can be heated only by connecting the heat load side outgoing pipe 19 and the heat load side return pipe 20 on the heating device 1 side to the main waste heat circulation path 6. Since the function as the function of the heating heat source of the heating device 1 can be added to the system functioning as the source, and most of the path of the main waste heat circulation path 6 can also be used as the path of the heat load side circulation path 22, The system can be easily constructed, and it is possible to construct a system having both the function of the hot water supply heating source and the function of the heating heat source (heating source) at a low cost.

  FIG. 2 shows a second embodiment of the waste heat utilization heat source system according to the present invention. The second embodiment differs from the first embodiment in that the main waste heat circulation path 6 and the heat load side circulation path 22 have separate circulation path configurations. In the second embodiment, as shown in FIG. 2 (a), the heat between the circulating fluids is passed through a path (pipe line) portion through which the main waste heat circulation path 6 and the heat load side circulation path 22 pass close to each other. A liquid-liquid heat exchanger 24 is provided as an exchange means, and a part of the main waste heat circulation path 6 and one of the heat load side circulation paths 22 are provided in the liquid-liquid heat exchanger 24. The coolant (waste heat endothermic fluid) passing through the main waste heat circulation path 6 and the heat load circulation fluid passing through the heat load side circulation path 22 are subjected to heat exchange, and the high temperature passing through the main waste heat circulation path 6 The cooling fluid is used as a heat source to heat the heat load circulating fluid. The configuration of the liquid-liquid heat exchanger 24 is the same as the configuration of the liquid-liquid heat exchanger 12 described above. The heat load circulating fluid is not particularly limited as long as it is a heat medium of heat-conductive fluid, but here water is used as the heat load circulating fluid.

  A path (pipe) from the liquid-liquid heat exchanger 24 downstream of the liquid-liquid heat exchanger 24 to the heating device (heating mat) 1 forms a heat load side outgoing pipe 19, and the liquid from the heating device 1 The path returning to the liquid heat exchanger 24 is formed by the heat load side return pipe 20, and the liquid-liquid heat exchanger 24 passes through the heat load side outgoing pipe 19, the heating device 1, and the heat load side return pipe 20 in order. The heat load side circulation path 22 is constituted by a path returning to the liquid heat exchanger 24. A thermal load side temperature sensor 27 as a thermal load side fluid temperature detecting means including a thermistor for detecting the temperature of the thermal load circulating fluid at a downstream position of the liquid-liquid heat exchanger 24 in the thermal load side outgoing pipe 19; A water amount control valve 26 as a circulation flow rate control means is provided.

  Then, at the downstream side of the water amount control valve 26, the thermal load side outgoing pipe 19 is branched into a plurality of branches, and each branched thermal load side outgoing pipe 19a is installed at a plurality of locations via the on-off valve 29. The heating device is connected to a corresponding heating device 1. Similarly, the upstream side of the heat load side return pipe 20 is also branched into a plurality of branches, and each of the branched heat load side branch return pipes 20a is connected to the corresponding heating device 1 (see FIG. 6).

  The heat load side return pipe 20 in which the heat load side branch return pipes 20a are integrated is provided with a systern 28 and a heat load side circulation pump 25. By driving the heat load side circulation pump 25, the heat load is returned. The circulating fluid circulates through the heat load side circulation path 22. The heat load side temperature sensor 27 and the water amount control valve 26 of the heat load side outgoing pipe 19 are provided for controlling the temperature of the heat load circulating fluid supplied to the heating device 1 so as to be a preset temperature. The temperature control is performed by a control signal from the heat load fluid temperature control means 40 of the control device 21.

  FIG. 2A shows a configuration example of the thermal load fluid temperature control means 40 of the control device 21, and the thermal load fluid temperature control means 40 has a valve opening amount control unit 34 and a memory 35. Yes. The memory 35 stores, for example, control data indicating the relationship between the amount of change in the valve opening amount of the water amount control valve 26 and the amount of change in temperature of the heat load circulating fluid. The valve opening amount control unit 34 takes in the temperature detection information of the heat load circulating fluid after heat exchange is performed by the liquid-liquid heat exchanger 24 from the heat load side temperature sensor 27. Then, the set temperature commanded (designated) by the remote controller 23 is compared with the detected temperature of the heat load circulating fluid, and when the detected temperature deviates from the allowable range for the set temperature stored in advance in the memory 35 or the like, the control data The amount of change in the valve opening amount for setting the detected temperature to the set temperature is obtained by calculation or the like, and the valve opening amount of the water amount control valve 26 is changed by the obtained amount of change.

  By controlling the adjustment amount of the water amount control valve 26, that is, by controlling the circulation flow rate of the heat load circulating fluid, the high-temperature cooling through the main waste heat circulation path 6 in the liquid-liquid heat exchanger 24 is performed. The amount of heat exchange per unit flow rate between the water and the heat load circulating fluid passing through the heat load side circulation path 22 changes, and the temperature of the heat load circulating fluid changes accordingly (the flow rate of the heat load circulating fluid increases). For example, if the temperature of the heat load circulating fluid changes in the decreasing direction and the flow rate decreases, the temperature of the heat load circulating fluid changes in the increasing direction), and the temperature of the heat load circulating fluid is controlled to the set temperature.

  The temperature control of the heat load circulating fluid does not necessarily use the above control data. For example, a unit change amount of the opening amount of the water amount control valve 26 is given to the memory 35, and the opening amount control unit 34 is provided. When the detected temperature of the heat load circulating fluid deviates from the allowable range with respect to the set temperature, the opening amount of the water amount control valve 26 is changed by a unit change amount in a direction approaching the set temperature, and then a predetermined time (for example, When the temperature of the heat load circulating fluid does not fall within the allowable range even after 30 seconds), various control configurations such that the opening amount of the water amount control valve 26 is changed by a unit change amount in a direction closer to the set temperature. Can be adopted.

  In the second embodiment, the hot water supply unit 7 includes a hot water storage temperature sensor 32 that detects the hot water temperature in the hot water storage tank 8 and cooling water (waste) before heat exchange is performed in the liquid-liquid heat exchanger 12. The hot water supply source temperature sensor 33 for detecting the temperature of the heat absorption fluid) is provided, and the controller 21 is configured to control the heating of the hot water in the hot water storage tank 8 by the control device 21. The configuration of this heating control is a configuration in which the flow rate circulating through the tank hot water circulation path 9 is controlled by the amount of opening of the water amount control valve 10 as in the temperature control of the heat load circulating fluid.

That is, for example, the temperature difference between the temperature of the hot water in the hot water storage tank 8 and the temperature of the cooling water (waste heat endothermic fluid) circulating through the main waste heat circulation path 6 in the memory 35 and the valve opening amount of the water amount control valve 10 Control data indicating the relationship with the amount of change is stored. The valve opening amount control unit 34 is the temperature between the temperature of the cooling water (T _W ) detected by the hot water supply heating source temperature sensor 33 and the temperature of the hot water (T _H ) in the hot water storage tank 8 detected by the hot water storage temperature sensor 32. A difference ΔT (0 <ΔT = T _W −T _H ) is obtained, and a change amount of the valve opening amount of the water amount control valve 10 corresponding to the obtained temperature difference ΔT is obtained based on the control data stored in the memory 35. . Then, the valve opening amount of the water amount control valve 10 is controlled in such a direction that the temperature difference ΔT decreases by the amount of change of the obtained valve opening amount.

Specifically, when the temperature difference Δ is large (when the hot water in the hot water storage tank 8 is low), the valve opening amount (flow rate) of the water amount control valve 10 is controlled to decrease. As a result, the hot water temperature after the heat exchange in the liquid-liquid heat exchanger 12 becomes higher than when the valve opening amount (flow rate) of the water amount control valve 10 is large, and the lowered hot water temperature in the hot water storage tank 8 is efficiently used. Can be enhanced. On the contrary, when the temperature difference Δ is small, the water amount control valve 10 is controlled to increase the valve opening amount (flow rate). Further, when the temperature difference ΔT becomes smaller than a predetermined threshold value or when the temperature of the cooling water (T _W ) becomes equal to or lower than the temperature of the hot water in the hot water storage tank 8 (T _H ), the tank circulation pump 11 The control configuration such as stopping is taken.

  In the second embodiment, the portion surrounded by the chain line in FIG. The optional unit 31 includes an inlet A where cooling water enters the liquid-liquid heat exchanger 24, an outlet B where cooling water exits from the liquid-liquid heat exchanger 24, and a heat load circulating fluid as liquid- An inlet C that enters the liquid heat exchanger 24 and an outlet D through which the heat load circulating fluid exits the unit are provided, and the inlet A and outlet B correspond to the corresponding connection positions of the main waste heat circulation path 6. The inlet C and the outlet D are connected to the corresponding heat load side circulation paths 22 (the inlet C is connected to the external heat load side return pipe 20, and the outlet D is connected to the external heat load side outgoing pipe 19. The option unit 31 is incorporated in the system.

  Also in the second embodiment, as in the first embodiment, by driving the main circulation pump 14, the cooling water of the power generator 30 circulates through the main waste heat circulation path 6, and the liquid- The hot water in the hot water storage tank 8 is heated by the heat exchange operation of the liquid heat exchanger 12, and the hot water in the hot water storage tank 8 is maintained at a hot water temperature suitable for hot water supply. When an ON command for heating operation of the heating device 1 is applied by the remote controller 23 or the like, the heat load side circulation pump 25 is driven, and the heat load circulation fluid circulates through the heat load side circulation path 22. By this circulation operation, the heat load circulating fluid circulating in the heat load side circulation path 22 is heated by the liquid-liquid heat exchanger 24 using high-temperature cooling water passing through the main waste heat circulation path 6 as a heat source, and a temperature suitable for heating. Become.

  The heated heat load circulating fluid circulates through the hot water pipes 4 (4a, 4b) of the heating device 1 so that heat is radiated from the surface of the heating device (heating mat) 1 and heating (in the illustrated example, floor heating). ) Is performed. In this embodiment, since the temperature of the heat load circulating fluid is controlled to be the set temperature by controlling the circulation flow rate by the water amount control valve 26, there is no time unevenness of the heat radiated from the heating device 1, Comfortable heating can be achieved.

  Moreover, in this embodiment example, since the structure of the main functional parts for heating the heating device 1 is integrated and integrated as the option unit 31, it is easy to construct a waste heat utilization heat source system. In addition, when the heating device 1 is installed in a facility in which a hot water heating source system in which the main waste heat circulation path 6 is formed between the power generation device 30 and the hot water supply unit 7 is already installed, the existing system main trunk is installed. A part of the waste heat circulation path 6 is divided and connected to the inlet A and the outlet B of the optional unit 31, and the external heat load side outgoing pipe 19 and the thermal load side return pipe 20 of the heating side are connected to the optional unit 31. By simply connecting to the inlet C and outlet D, the heating system can be added to the hot water supply source system, so that the equipment change is very easy.

  In particular, it is predicted that the number of students will decrease and the number of elderly people will increase due to the declining birthrate in the future.For example, when newly constructing a high school, it is planned to close the high school and convert it to a nursing home. It is being During the period of use as a high school, a floor heating facility is not usually provided, and a hot water supply heat source system is generally installed as equipment for hot water use. Thereafter, for example, when a high school is converted into a nursing home after a dozen years or a few decades, floor heating equipment is installed on the floor that was the classroom. At this time, as in the present embodiment, by consolidating the main functional parts of heating as the option unit 31, the existing hot water supply heating source system can be used as the heating heating source system, and the construction work is also easy. Therefore, diversion from high school to a nursing home can be performed smoothly, inexpensively and quickly.

  FIG. 3 shows a third embodiment of the waste heat utilization heat source system according to the present invention. The third embodiment is different from the second embodiment in that the temperature control of the heat load circulating fluid circulating in the heat load side circulation path 22 is performed by cooling water (waste) circulating in the main waste heat circulation path 6. This is a configuration in which the flow rate of the heat endothermic fluid) is controlled, and the other configurations are the same as those in the second embodiment. For this reason, in the third embodiment, the water amount control valve 26 provided in the heat load side circulation path 22 of the second embodiment is removed, and the path (pipe) of the main waste heat circulation path 6 is removed. Among them, a passage in which a pipe line entering the liquid-liquid heat exchanger 24 and a pipe line exiting from the liquid-liquid heat exchanger 24 are communicated, that is, a bypass passage 36 bypassing the liquid-liquid heat exchanger 24. And a cooling water (waste heat endotherm) at a branch portion on the inlet side of the bypass passage 36 (a portion where the bypass passage 36 branches from the pipe of the main waste heat circulation path 6 on the inlet side of the liquid-liquid heat exchanger 24). A water amount control valve 37 is provided as a circulation flow rate control means for variably adjusting the flow rate ratio between the amount (flow rate) of the fluid) entering the liquid-liquid heat exchanger 24 and the flow rate flowing to the bypass passage 36 side.

  The temperature control of the heat load circulating fluid by controlling the flow rate ratio of the water amount control valve 37 is performed by the heat load fluid temperature control means 40 of the control device 21. The configuration of the heat load fluid temperature control means 40 has the same block configuration as that shown in FIG. 2B, and includes a valve opening amount control unit 34 and a memory 35.

  The memory 35 stores, for example, control data indicating the relationship between the change amount of the flow rate ratio of the water amount control valve 37 and the temperature change amount of the heat load circulating fluid. The valve opening amount control unit 34 takes in the temperature detection information of the heat load circulating fluid after heat exchange is performed by the liquid-liquid heat exchanger 24 from the heat load side temperature sensor 27. Then, the set temperature commanded (designated) by the remote controller 23 is compared with the detected temperature of the heat load circulating fluid, and when the detected temperature deviates from the allowable range for the set temperature stored in advance in the memory 35 or the like, the control data The flow rate ratio change amount for setting the detected temperature to the set temperature is obtained by calculation or the like, and the flow rate ratio of the water amount control valve 37 is changed by the obtained change amount.

  Control of the flow rate ratio of the water amount control valve 37, that is, the circulation flow rate of the cooling water (waste heat endothermic fluid) that enters the liquid-liquid heat exchanger 24 and flows through the flow path 38 in the liquid-liquid heat exchanger 24 is controlled. As a result, the amount of heat exchange per unit flow rate between the high-temperature cooling water passing through the flow path 38 in the liquid-liquid heat exchanger 24 and the heat load circulating fluid passing through the heat load side circulation path 22 changes. Accordingly, the temperature of the heat load circulating fluid changes (if the flow rate of the high-temperature cooling water flowing through the flow path 38 increases, the temperature of the heat load circulating fluid changes in the upward direction, and if the flow rate decreases, the heat load circulation fluid changes. The temperature of the fluid changes in the decreasing direction), and the temperature of the heat load circulating fluid is controlled to the set temperature.

  The temperature control of the heat load circulating fluid does not necessarily use the above control data. For example, a unit change amount of the flow rate ratio of the water amount control valve 37 is given to the memory 35, and the valve opening amount control unit 34 When the detected temperature of the heat load circulating fluid deviates from the allowable range with respect to the set temperature, the flow rate ratio of the water amount control valve 37 is changed by the unit change amount in a direction approaching the set temperature, and then a predetermined time (for example, 30 seconds) given in advance. When the temperature of the heat load circulating fluid does not fall within the allowable range even after elapse of a), various control configurations are adopted such that the flow rate ratio of the water amount control valve 37 is changed by a unit change amount in a direction closer to the set temperature. obtain.

  Also in the third embodiment, the heating control of the hot water in the hot water storage tank 8 is performed in the same manner as in the second embodiment. The temperature of the heat load circulating fluid that circulates through the heat load side circulation path 22 and is supplied to the heating device 1 is the flow rate ratio of the water amount control valve 37 (the ratio of the flow rate that flows through the flow path 38 and the flow rate that flows through the bypass passage 36. ) Is controlled to a set temperature, and the same effect as in the second embodiment is obtained, such as suitable heating in which the temporal unevenness of the heat dissipation amount of the heating device 1 is suppressed.

  FIG. 4 shows a fourth embodiment of the waste heat utilization heat source system according to the present invention. In the fourth embodiment, a heat source unit 46 is provided in a path (pipe) between the heat load side outgoing pipe 19 and the heating device 1, and the temperature of the heat load circulating fluid entering the heat source unit 46 is controlled by the remote controller. When the temperature is lower than the set temperature set by 23 or the like, the heat load circulating fluid is heated to the set temperature by the heat source unit 46 and supplied to the heating device (heating mat) 1. In the fourth embodiment, a heat source unit 46 is provided in a path (pipe) between the heat load side outgoing pipe 19 and the heating device 1 in the systems of the first to third embodiments. However, in FIG. 4, as a representative example, the heat source machine 46 is arranged on the path (pipe line) between the heat load side outgoing pipe 19 and the heating apparatus 1 of the system of the third embodiment shown in FIG. 3. An example in which is interposed is shown.

  The heat source unit 46 has the same configuration as that of a general water heater (instantaneous water heater) and has a built-in pump. The heat load side circulation pump 25 is removed from the unit 31. Further, the option unit 31 of FIG. 3 is provided with the cistern 28. However, when the heat source device 46 is connected, the cistern 28 is not necessary. Therefore, the option unit 31 of FIG. 4 excludes the cistern 28. .

  The heat source machine 46 is a heating path for sending the heat load circulating fluid entering from the heat load side outgoing pipe 19 from the heat load side circulation pump 25 to the heating device 1 through the opening / closing control valve 43 and the heat exchanger 41 in order, A non-heating path for sending the heat load circulating fluid from the load-side circulation pump 25 to the heating device 1 through a bypass line 45 having an open / close control valve 44. In addition, the code | symbol 47 in FIG. 4 shows the temperature sensor which detects the temperature of the heat load circulating fluid sent toward the heating apparatus 1. FIG. In the fourth embodiment, from the liquid-liquid heat exchanger 24, the heat load side outgoing pipe 19, the heat source machine 46, the heat load side outgoing pipe (heat load side branch outgoing pipe) 19a, the heating device 1, the heat A path (pipe) returning to the liquid-liquid heat exchanger 24 through the load side return pipe 20 (20a) constitutes the heat load side circulation path 22.

  The operation of the heat source device 46 is performed by the control device 21, and the control device 21 performs the heat load side temperature sensor 27 or the temperature sensor (in the heat source device 46 during the heating operation of the heat load side circulation pump 25). When the temperature of the heat load circulating fluid on the input side (incoming water side) of the heat source device 46 detected by the heat source device 46 is lower than the allowable range given to the set temperature, the open / close control valve 43 is opened and the open / close control valve 44 is opened. Close and pass the heat load circulating fluid through the heating path. Then, the heat load circulating fluid passing through the heat exchanger 41 is heated by the combustion flame of the burner 42 using gas or petroleum as fuel, and the temperature of the heat load circulating fluid detected by the temperature sensor 47 is heated to the set temperature. The amount is controlled, and the heat load circulating fluid at the set temperature is supplied to the heating device 1.

  On the other hand, the control device 21 determines that the temperature of the heat load circulating fluid on the input side (incoming water side) of the heat source unit 46 detected by the heat load side temperature sensor 27 or the temperature sensor (not shown) in the heat source unit 46 is high. When the temperature does not fall outside the allowable range given to the set temperature, there is no need for heating. Therefore, the opening / closing control valve 43 is closed and the opening / closing control valve 44 is opened to allow the heat load circulating fluid to pass through the non-heating path. To send to.

  In the fourth embodiment, the power demand of the power generation device 30 is reduced, the amount of power generation is reduced, and the temperature of the waste heat endothermic fluid is lowered. Accordingly, the heat exchange of the liquid-liquid heat exchanger 24 is performed. When the amount of the heat load circulating fluid circulating through the heat load side outflow pipe 19 decreases below the set temperature, the heat source unit 46 immediately operates and heats the temperature of the heat load circulating fluid to the set temperature. The temperature of the heating heat source (heat load circulating fluid) supplied to the heating device 1 is stably maintained at the set temperature, and the heating device 1 is preferably free from temporal heating unevenness (temporal fluctuation of the heating temperature in time). Heating operation is possible.

  In addition, the waste heat utilization heat source system according to the present invention is not limited to the configuration of each of the above-described exemplary embodiments, and can adopt various embodiments. For example, in each of the above-described embodiments, the waste heat endothermic fluid and the heat load circulating fluid are configured by water, but may be configured by a liquid other than water such as oil.

  Further, the floor heating device has been described as an example of the heat load device. However, the heat load device is also applied to an indoor heating device other than the floor, and is also applied to a drying device in which a heat load circulating fluid is circulated. Is.

  Further, in each of the above embodiments, the hot water supply side heat exchanging means is constituted by the liquid-liquid heat exchanger 12, but heat exchange with the heat load circulating fluid circulating in the main waste heat circulation path 6 is performed in the hot water storage tank 8. For example, as shown in FIG. 5, the main waste heat circulation path 6 is passed through the hot water storage tank 8, and the main waste heat circulation is performed in the hot water storage tank 8. The heat exchange between the heat load circulating fluid passing through the path 6 and the hot water in the hot water storage tank 8 may be performed.

  Further, in the example of FIG. 1, the heat load side outgoing pipe 19 and the heat load side return pipe 20 are connected to the main waste heat circulation path 6 at the upstream position of the liquid-liquid heat exchanger 12. -At the downstream position of the liquid heat exchanger 12 (for example, the position of the conduit between the main circulation pump 14 and the power generation device 30), the heat load side outgoing pipe 19 and the heat load side return pipe 20 are connected to the main waste heat circulation path. 6 may be connected. However, by doing so, the waste heat endothermic fluid whose temperature has decreased due to heat exchange in the liquid-liquid heat exchanger 12 is supplied to the heating device 1, and the downstream side of the liquid-liquid heat exchanger 12. When the temperature of the waste heat endothermic fluid is lower than the set temperature for supplying to the heating device 1, as shown in FIG. 1, the heat load side forward pipe 19 and the heat load side return pipe 20 Is preferably connected to the upstream side of the liquid-liquid heat exchanger 12. However, this is not the case when a heat source device 46 as shown in FIG.

  Further, in the example of FIG. 1, the flow path switching means is configured by the three-way valve 18, but the waste heat endothermic fluid is selectively flowed between the main waste heat circulation path 6 side and the heat load side circulation path 22 side. As long as it has the structure which switches, it is good also as structures other than the three-way valve 18. FIG.

  Furthermore, in the example shown in FIG. 4, a pump with a built-in heat source device 46 is used as the heat load side circulation pump 25, but when such a built-in pump is not installed in the heat source device 46, the option of FIG. As shown in the unit 31, the option unit 31 is equipped with the heat load side circulation pump 25.

  Furthermore, in the third embodiment, the bypass passage 36 is provided as shown in FIG. 3, but the bypass passage 36 may not be provided. In that case, for example, a water amount control valve for controlling the valve opening amount similar to the water amount control valve 26 in FIG. 2 on the pipe line of the main waste heat circulation path 6 on the side entering or leaving the flow path 38. And the heat load circulation supplied to the heating device 1 while circulating through the heat load side circulation path 22 by controlling the flow rate of the waste heat endothermic fluid passing through the flow path 38 by controlling the opening amount of the water amount control valve. The temperature of the fluid is controlled to be the set temperature.

  Furthermore, although the heat source unit 46 of the fourth embodiment is a combustion type instrument using oil or gas as a fuel, it is a non-combustion type heat source unit that heats the heat load circulating fluid using an electric heater or the like. Also good.

  Further, in each of the above-described embodiments, the example of the system in which the remote controller 23 is connected to the control device 21 has been described, but the remote controller 23 may not be provided. In that case, the operation unit for instructing on / off of the operation of the heat load device such as heating or for specifying the set temperature of the heat load circulating fluid to be supplied to the heat load device is provided as the control device 21 or other place. Will be provided.

1 is a configuration explanatory diagram of a first embodiment of a waste heat utilization heat source system according to the present invention. FIG. It is composition explanatory drawing of the 2nd Example of the waste heat utilization heat source system which concerns on this invention. It is composition explanatory drawing of the 3rd Embodiment of the waste heat utilization heat source system which concerns on this invention. It is composition explanatory drawing of the example of 4th Embodiment of the waste heat utilization heat source system which concerns on this invention. It is explanatory drawing of the other example of the hot water supply side heat exchange means. It is a figure which shows an example of the heating apparatus which comprises a heat load apparatus.

Explanation of symbols

1 Heating device (heat load device)
6 Main waste heat circulation path 8 Hot water storage tank 12 Liquid-liquid heat exchanger (hot water supply side heat exchange means)
18 Three-way valve (channel switching means)
19 heat load side outgoing pipe 20 heat load side return pipe 22 heat load side circulation path 24 liquid-liquid heat exchanger (heat exchange means between circulating fluids)
25 Thermal load side circulation pump 26, 37 Water volume control valve (circulation flow rate control means)
27 Thermal load side temperature sensor (thermal load side fluid temperature detection means)
30 Power Generator 31 Option Unit 40 Thermal Load Fluid Temperature Control Unit 46 Heat Source Machine

Claims (9)

  A hot water storage tank for storing hot water for hot water supply, and a main waste heat circulation path for circulating a waste heat endothermic fluid that has absorbed the waste heat of the power generation device, and the main waste heat heat circulation path includes the waste heat endothermic fluid and hot water storage In the waste heat utilization heat source system provided with hot water supply side heat exchange means for exchanging heat of the hot water in the tank to heat the hot water in the hot water storage tank, the waste heat endothermic fluid is connected to the heat load device in the main waste heat circulation path And a heat load side return pipe for returning the waste heat endothermic fluid from the heat load device to the main waste heat circuit is a branch connection portion of the heat load side forward pipe. A heat load line that is connected to a position downstream of the heat load device and that causes the waste heat endothermic fluid supplied from the heat load side outgoing pipe to flow through the heat load device and that is sent to the heat load side return pipe From the power generator side to the branch connection portion of the heat load side outgoing pipe A main waste heat circulation path part, the heat load side outgoing pipe, the heat load pipe, the heat load side return pipe, a main waste heat circulation path part from the connection part of the heat load side return pipe to the power generator, The flow path passing through the heat load side circulation path, and the flow path switching means for switching the flow of the waste heat endothermic fluid between the main waste heat circulation path and the heat load side circulation path is provided. A heat source system utilizing waste heat.   The waste heat utilization according to claim 1, wherein the branch connection portion of the heat load outgoing pipe and the connection portion of the heat load side return pipe are connected to a main waste heat circulation path between the power generator and the hot water supply side heat exchange means. Heat source system.   A hot water storage tank for storing hot water for hot water supply, and a main waste heat circulation path for circulating a waste heat endothermic fluid that has absorbed the waste heat of the power generation device, and the main waste heat heat circulation path includes the waste heat endothermic fluid and hot water storage In the waste heat utilization heat source system provided with hot water supply side heat exchange means for heat exchange of the hot water in the tank to heat the hot water in the hot water storage tank, a heat load side circulating fluid different from the main waste heat circulation circuit is provided. A thermal load side circulation path to be circulated, and the thermal load side circulation path includes a thermal load line that passes the thermal load side circulation fluid; and a thermal load circulation fluid in the thermal load side circulation path And a circulation flow rate control means for adjusting the circulation flow rate of the heat load side circulating fluid are interposed, and there is no waste between the main waste heat circulation path and the heat load side circulation path. A heat exchange means between the circulating fluids is provided to absorb the heat on the heat absorbing fluid side into the heat load circulating fluid. A heat load side fluid temperature detecting means for detecting the temperature of the heat load circulating fluid is provided at a position of the heat load side circulation path downstream of the circulating fluid heat exchanging means, and the heat load side fluid temperature is Thermal load fluid temperature control for controlling the amount of adjustment of the circulation flow rate in the heat load side circulation fluid of the circulation flow rate control means so that the temperature of the heat load circulation fluid becomes a specified temperature based on the detection temperature of the detection means A heat source system utilizing waste heat, characterized in that means are provided.   A hot water storage tank for storing hot water for hot water supply, and a main waste heat circulation path for circulating a waste heat endothermic fluid that has absorbed the waste heat of the power generation device, and the main waste heat heat circulation path includes the waste heat endothermic fluid and hot water storage In a waste heat utilization heat source system provided with a hot water supply side heat exchange means for heat exchange of hot water in a tank to heat hot water in a hot water storage tank, the main waste heat circulation path is circulated in the main waste heat circulation path A circulation flow rate control means for adjusting a circulation flow rate of the waste heat endothermic fluid is provided, and has a heat load side circulation path for circulating the heat load side circulation fluid, which is different from the main waste heat circulation path, and the heat The load side circulation line is provided with a heat load device having a heat load line for passing the heat load side circulation fluid and a heat load side circulation pump for circulatingly driving the heat load circulation fluid in the heat load side circulation path. A waste heat endothermic fluid between the main waste heat circuit and the heat load circuit. The heat load circulating fluid absorbs the heat of the heat load to the heat load circulating fluid, and the temperature of the heat load circulating fluid is detected at the position of the heat load side circulation path on the downstream side of the heat exchange means between the circulating fluids. A heat load side fluid temperature detecting means is provided, and the circulation flow rate control means is discarded so that the temperature of the heat load circulating fluid becomes a specified set temperature based on the temperature detected by the heat load side fluid temperature detecting means. A heat source system utilizing waste heat, characterized in that a heat load fluid temperature control means for controlling an adjustment amount of a circulation flow rate in the heat absorbing fluid is provided.   The main waste heat circulation path is provided with a bypass passage that bypasses the heat exchange means between the circulating fluids, and the circulation flow control means includes a flow rate of the waste heat endothermic fluid flowing through the heat exchange means between the circulating fluids and a flow rate flowing through the bypass passages. The heat load fluid temperature control means controls the flow ratio of the circulation flow control means to control the temperature of the heat load circulation fluid. The heat source system using waste heat according to claim 4, wherein the heat source system is configured to control the heat.   The heat load side circulation path is provided with a heat source device having heating means at a position upstream of the heat load device, and the heat source device has a temperature of the input heat load circulation fluid from a preset temperature specified in advance. The waste heat utilization heat source system according to any one of claims 1 to 5, wherein when the temperature is lower, the temperature of the heat load circulating fluid is raised to the set temperature and sent to the heat load device.   The heat exchange means between the circulating fluids, the heat load side circulation pump, the circulation flow rate control means, and the heat load side fluid temperature detection means are assembled into an optional unit, and the optional unit includes waste heat endothermic fluid. Enters the heat exchange means between the circulating fluid, the waste heat endothermic fluid outlet where the waste heat endothermic fluid is sent out of the unit from the heat exchange means between the circulating fluid, and the heat load circulating fluid exchanges heat between the circulating fluids. And an outlet for the heat load circulating fluid through which the heat load circulating fluid is sent out of the unit from the heat exchange means between the circulating fluids. 7. The waste heat circulation path is connected to a corresponding connection position, and an inlet and an outlet of the heat load circulation fluid are connected to a corresponding connection position of the heat load side circulation pipe. Waste heat utilization heat source system.   The heat exchange means between the circulating fluid, the circulation flow rate control means, and the heat load side fluid temperature detection means are assembled to form an optional unit, in which the waste heat endothermic fluid is exchanged between the circulating fluid and the heat exchange means. An inlet for the waste heat endothermic fluid to be discharged from the heat exchange means between the circulating fluids to the outside of the unit, an inlet for the heat load circulating fluid to enter the heat exchange means for the circulating fluids, A heat load circulating fluid is sent from the heat exchange means between the circulating fluids to the outside of the unit, and the waste heat endothermic fluid inlet and outlet are connected to the main waste heat circulation path. The waste heat utilization heat source system according to claim 6, wherein the heat load circulating fluid inlet and outlet are connected to corresponding connection positions of the heat load circulation pipe.   The waste heat absorption fluid and the heat load circulating fluid are warm water, and the heat load device is a heating device having a heat load pipe as a hot water pipe through which warm water flows. The waste heat utilization heat source system described in 1.

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