WO2010113660A1 - 送水温度制御装置およびその方法 - Google Patents
送水温度制御装置およびその方法 Download PDFInfo
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- WO2010113660A1 WO2010113660A1 PCT/JP2010/054683 JP2010054683W WO2010113660A1 WO 2010113660 A1 WO2010113660 A1 WO 2010113660A1 JP 2010054683 W JP2010054683 W JP 2010054683W WO 2010113660 A1 WO2010113660 A1 WO 2010113660A1
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- Prior art keywords
- water supply
- supply temperature
- heat source
- source device
- amount
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- 238000000034 method Methods 0.000 title claims description 18
- 239000008400 supply water Substances 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 185
- 230000004044 response Effects 0.000 claims abstract description 29
- 101100262131 Mus musculus Prss16 gene Proteins 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000010485 coping Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 22
- 238000004378 air conditioning Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 9
- 239000000446 fuel Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 102100035767 Adrenocortical dysplasia protein homolog Human genes 0.000 description 3
- 101000929940 Homo sapiens Adrenocortical dysplasia protein homolog Proteins 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1048—Counting of energy consumption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1917—Control of temperature characterised by the use of electric means using digital means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
Definitions
- the present invention relates to a water supply temperature control device and method for controlling the temperature of water supplied from a heat source device to a load device via a circulation pump.
- cold / hot water is generated by a heat source device, and the cold / hot water generated by the heat source device is sent to a load device via a circulation pump.
- the supply pressure of the cold / hot water from the heat source device to the load device is maintained at a constant value by adjusting the output of the circulation pump.
- the cooling capacity on the load device side is lowered if the water supply temperature of the cold water from the refrigerator is increased, so the required flow rate of the cold water increases. To do. As the required flow rate of cold water increases, the water supply pressure decreases, so that the output of the circulation pump increases in order to maintain this water supply pressure at a constant value.
- the temperature of the generated cold water is increased, the efficiency of the refrigerator is improved, and the output of the refrigerator is lowered. That is, when the water supply temperature is raised, the amount of energy used by the refrigerator decreases and the amount of energy used by the circulation pump increases.
- the amount of energy used in the refrigerator and the circulation pump varies depending on the setting of the temperature of the cold / hot water supplied from the refrigerator to the load device. If the water supply temperature is set low, the energy consumption (power consumption) of the circulation pump decreases as the energy consumption (power consumption or fuel consumption) of the refrigerator increases. If the water supply temperature is set high, the energy consumption (power consumption) of the circulation pump increases as the energy consumption (power consumption or fuel consumption) of the refrigerator decreases. That is, the energy consumption of the refrigerator and the circulation pump is a trade-off. The same can be said when the heat source device is a heat machine.
- the present invention has been made to solve such problems, and its purpose is to respond to changes in the characteristics of the heat source equipment and the circulation pump and changes in the external environment, and is always optimal over a long period of time. It is an object of the present invention to provide a water supply temperature control apparatus and method capable of determining a suitable water supply temperature.
- the present invention provides a water supply temperature control device that controls the supply temperature of cold / hot water from a heat source device to a load device via a circulation pump.
- Actual value collection means for periodically collecting and accumulating the amount of energy used by heat source equipment, the amount of energy used by the circulation pump, the water supply temperature, and the actual values of predetermined parameters as related parameters, and the collection of the actual values Based on the actual values of the related parameters collected and accumulated by the means, find the water supply temperature corresponding to the current load situation that minimizes the total energy consumption of the equipment used, including the heat source equipment and the circulation pump.
- the optimum water supply temperature determining means for determining the optimum water supply temperature is provided.
- the predetermined parameter in the related parameters related to the current load state is the outside air temperature (tout)
- the amount of energy used (PW1) of the heat source device the use of the circulation pump during the operation of the heat source device
- PW2 the amount of energy used
- TS water supply temperature
- tout the amount of energy used
- TS water supply temperature
- tout outside air temperature
- the collected actual values of related parameters are plotted in a multidimensional space, and a response surface model is created by interpolating the actual values plotted in the multidimensional space.
- the current optimum water supply temperature is determined from the curved surface model.
- the actual values of the total energy consumption PW, the water supply temperature TS, and the outside air temperature tout of the circulation pump are plotted.
- a response surface model (three-dimensional solid image) is created by interpolating the actual values plotted in the three-dimensional space, a section of the response surface model is cut out at the current outside temperature tout R , and the cut out response surface model
- the water supply temperature TS PWmin at which the total amount of used energy PW is minimum in the cross section is obtained, and this water supply temperature TS PWmin is determined as the current optimum water supply temperature TSsp.
- the total usage energy amount PW of the equipment used may include the usage energy amount of the cooling tower fan, the usage energy amount of the cooling water pump, and the like.
- the amount of energy used for the secondary pump may be included in the total amount of energy used PW.
- the energy used by the air conditioner may be included in the total energy used PW.
- the predetermined parameter among the related parameters related to the current load situation is not limited to the outside air temperature tout, and the number of parameters is not limited to one.
- two parameters of the load heat quantity Q calculated from the water supply temperature TS, the return water temperature TR, and the flow rate F of cold / hot water to the load device and the temperature tC of the coolant to the heat source device are set as predetermined parameters. Also good.
- the total amount of energy used may be the amount of energy converted into cost.
- the amount of energy used by the heat source equipment is fuel consumption such as gas
- the amount of energy used by the circulation pump is the amount of power consumption
- the total amount of energy used may be considered.
- the amount of energy used by the heat source device, the amount of energy used by the circulation pump, the water supply temperature, and the actual values of predetermined parameters are set as related parameters related to the current load status.
- Water is collected and stored regularly, and based on the actual values of the collected and accumulated related parameters, water is delivered in accordance with the current load situation that minimizes the total amount of energy used by equipment including heat source equipment and circulating pumps.
- this water supply temperature is determined as the current optimum water supply temperature
- the function model such as the response surface model that continues to grow while learning in real time is used, and the characteristics of the heat source equipment and the circulation pump It is possible to always determine the optimal water supply temperature over a long period of time in response to changes in the environment and changes in the external environment.
- FIG. 1 It is a figure which shows the principal part of one Embodiment of the air-conditioning control system with which the water supply temperature control apparatus which concerns on this invention was attached. It is a flowchart for demonstrating the optimal water supply temperature determination function which the heat-source equipment control apparatus (water supply temperature control apparatus) in this air-conditioning control system has. It is an image figure which shows the state which plotted the actual value of the related parameter in three-dimensional space. It is an image figure which shows the state which produced the response surface model using the interpolation technique by a multidimensional spline from the actual value of the related parameter plotted in the three-dimensional space.
- the surface model of the cross section is a diagram showing a state cut out at the current outside air temperature tout R. It is a functional block diagram of the heat-source equipment control apparatus in this air-conditioning control system.
- FIG. 1 is a diagram showing a main part of an embodiment of an air conditioning control system provided with a water supply temperature control device according to the present invention.
- the air conditioning control system includes a heat source device 1 that generates cold / hot water, a cold / hot water pump (circulation pump) 2 that conveys the cold / hot water generated by the heat source device 1, a forward header 3, a forward water pipeline 4, and a forward header 3.
- the cold equipment is supplied with cold / hot water sent from the water supply line 4 through the water supply line 4, and is supplied with cold / hot water 5, the return water pipe 6, and the load equipment 5.
- route of the cold / hot water from the return header 7 to which the water returns, and the forward header 3 to the load apparatus 5 is comprised.
- the air conditioning control system measures the supply air temperature sensor 9 that measures the supply air temperature tS sent from the load device 5 and the outlet temperature of the cold / hot water from the heat source device 1 as the supply water temperature TS to the load device 5.
- An opening degree control device (air conditioning control device) 13 that controls the opening degree of the flow control valve 8
- a cold / hot water pump control device 14 that controls the output of the cold / hot water pump 2
- a heat source device control device that controls the output of the heat source device 1 (Water supply temperature control device) 15, a bypass pipe 16 connecting the forward header 3 and the return header 7, and a bypass valve 17 provided in the bypass pipe 16 are provided.
- the opening degree control device 13 controls the opening degree of the flow rate control valve 8 so that the indoor supply air temperature tS (tSpv) measured by the supply air temperature sensor 9 matches the set temperature tSsp. To do.
- the chilled / hot water pump control device 14 outputs the output of the chilled / hot water pump 2 so as to maintain the supply pressure PS (PSpv) of the chilled / warm water from the heat source device 1 to the load device 5 measured by the pressure sensor 11 at the set value PSsp.
- the valve opening degree of the bypass valve 17 is controlled.
- the heat source device control device 15 uses the energy consumption (fuel consumption) PW1 of the heat source device 1 and the energy consumption (power consumption) of the cold / hot water pump 2 as related parameters related to the current load status. ) PW2, periodically collected / accumulated actual values of the cold water supply temperature TS from the heat source device 1 to the load device 5 measured by the water supply temperature sensor 10 and the outside air temperature tout measured by the outside air temperature sensor 12, Based on the actual values of the collected and accumulated related parameters, the water supply temperature TS PWmin corresponding to the current load condition in which the total use energy amount PW (PW1 + PW2) of the heat source device 1 and the cold / hot water pump 2 is minimized is obtained.
- TS PWmin is determined as the current optimum water supply temperature TSsp, and the optimum water supply temperature TS thus determined is determined.
- sp is sent to the heat source device 1.
- the heat source device 1 receives the optimum water supply temperature TSsp from the heat source device control device 15 and adjusts its own ability so that the outlet temperature of the cold / hot water from the heat source device 1 matches the optimum value TSsp.
- the heat source device control device 15 is realized by hardware including a processor and a storage device, and a program that realizes various functions as a control device in cooperation with these hardware. It has the optimum water supply temperature determination function described above for the outline. Hereinafter, according to the flowchart shown in FIG. 2, the detail of the optimal water supply temperature determination function which the heat-source equipment control apparatus 15 has is demonstrated.
- the heat source device control device 15 periodically repeats the processing operations after step S102 during operation of the heat source device 1 (YES in step S101).
- step S102 the heat source device control device 15 uses the energy consumption (fuel consumption) PW1 of the heat source device 1 and the energy consumption (power consumption) of the cold / hot water pump 2 as related parameters related to the current load situation.
- the actual values of the PW2, the water supply temperature TS (TSpv) of cold / hot water from the heat source device 1 to the load device 5 measured by the water supply temperature sensor 10 and the outside air temperature tout measured by the outside air temperature sensor 12 are collected.
- the heat source device control device 15 uses the total use energy amount PW (PW1 + PW2) of the heat source device 1 and the cold / hot water pump 2 as the first axis, the water supply temperature TS as the second axis, and the outside air temperature tout as the third axis.
- the collected actual use energy amount PW of the heat source device 1 and the cold / hot water pump 2, the water supply temperature TS, and the actual values of the outside air temperature tout are plotted (step S103).
- Figure 3 shows an image of this case.
- the Z axis is the axis (first axis) indicating the total energy consumption PW of the heat source device 1 and the cold / hot water pump 2
- the Y axis is the axis (second axis) indicating the water supply temperature TS
- the X axis is the outside air temperature.
- An axis indicating third is shown. In this embodiment, it is assumed that the collected actual values of related parameters are accumulated in the memory in a form plotted in such a three-dimensional space.
- the heat source device control device 15 creates a response surface model (three-dimensional stereoscopic image) from the actual values of the related parameters plotted in the three-dimensional space using an interpolation technique using a multidimensional spline (step S104).
- the interpolation technique using multidimensional splines is known as RSM-S (see, for example, Patent Document 2), and a detailed description thereof will be omitted here.
- Figure 4 shows an image of this case.
- the Z-axis indicating the total energy usage PW of the heat source device 1 and the cold / hot water pump 2 is assumed to have a smaller value of the total energy usage PW as the distance from the origin increases.
- a response surface model having a mountain shape is created in the three-dimensional space, but the top Ptop of this response surface model is estimated that the total amount of used energy PW is estimated to be the smallest from experience so far. is there. That is, at the outside air temperature tout and the water supply temperature TS indicated by this point Ptop, the total use energy amount PW of the heat source device 1 and the cold / hot water pump 2 is minimized.
- the heat source device control device 15 cuts out the cross section of the response curved surface model at the current outside air temperature tout R (see FIG. 5), and the water supply temperature at which the total use energy amount PW is minimum in the cut out cross section of the response curved surface model.
- TS PWmin is obtained, and this water supply temperature TS PWmin is determined as the current optimum water supply temperature TSsp (step S105). Then, the determined optimum water supply temperature TSsp is sent to the heat source device 1 (step S106).
- the heat source device control device 15 repeats the processing operations of steps S102 to S106 described above while the heat source device 1 is in operation (YES in step S101).
- a response surface model that continues to grow while learning in real time is used to cope with changes in characteristics of the heat source device 1 and the cold / hot water pump 2 and changes in the external environment for a long period of time.
- the optimum water supply temperature TSsp can be determined all the time.
- FIG. 6 shows a functional block diagram of the heat source device control device 15.
- the heat source device control device 15 uses the amount of energy used (fuel consumption) PW1 of the heat source device 1 and the amount of energy used (consumption) of the cold / hot water pump 2 as related parameters related to the current load status.
- Amount of power) PW2 the water temperature TS of the cold / hot water from the heat source device 1, the actual value collection unit 15A that periodically collects and accumulates the actual value of the outside air temperature tout, and the actual value collection unit 15A collects and accumulates
- PW2 the water temperature TS of the cold / hot water from the heat source device 1
- PW1 + PW2 the actual value collection unit 15A collects and accumulates
- An optimum water supply temperature determination unit 15B that determines and determines this water supply temperature as the current optimum water supply temperature TSsp is provided.
- the optimum water supply temperature determination unit 15B plots the actual values (PW, TS, tout) of the related parameters collected by the actual value collection unit 15A in a three-dimensional space, and the plotted related parameters.
- a response surface model is created from the actual value by RSM-S technology, a cross section of the created response surface model is cut out at the current outside air temperature tout R , and the total amount of energy PW used in the cut out cross section of the response surface model is The minimum water supply temperature TS PWmin is obtained, and this water supply temperature TS PWmin is determined as the current optimum water supply temperature TSsp.
- the total amount of energy used by the heat source device 1 and the cold / hot water pump 2 is the total amount of energy used PW (PW1 + PW2) of the devices used.
- the energy amount PW may include the use energy amount PW3 of the cooling tower fan, the use energy amount PW4 of the cooling water pump, and the like.
- the usage energy amount PW5 of the secondary pump may be included in the total usage energy amount PW.
- the energy used by the air conditioner may be included in the total energy used PW.
- the related parameters related to the current load state are the amount of energy PW1 used by the heat source device 1, the amount of energy PW2 used by the cold / hot water pump 2, the water supply temperature TS of the cold / hot water from the heat source device 1,
- the outside air temperature tout is used, the outside air temperature tout is not necessarily used, and other parameters may be used.
- the load heat amount Q calculated from the water supply temperature TS, the return water temperature TR, and the flow rate F of cold / warm water to the load device 5 and the heat source device 1
- the temperature tC of the cooling water may be used as a related parameter related to the current load situation.
- the actual values of the related parameters are the total energy consumption PW (PW1 + PW2) of the heat source device 1 and the cold / hot water pump 2 as the first axis, the water supply temperature TS as the second axis, the load heat quantity Q as the third axis, and the cooling water.
- the temperature tC is plotted in a four-dimensional space with the fourth axis, and the response surface model (four-dimensional stereoscopic image) is created by interpolating the actual values plotted in the four-dimensional space with RSM-S. become.
- the cooling water flow rate, the air supply temperature of the air conditioner, the water supply pressure, and the like may be used as related parameters.
- the four-dimensional space is a virtual space on the computer.
- it cuts the response surface model in the current heat load Q R and the current coolant temperature tC R, obtains the supply water temperature TS PWmin the total amount of energy used PW in the cross section of the cut-out response surface model is minimized,
- This water supply temperature TS PWmin is determined as the current optimum water supply temperature TSsp.
- the current optimum water supply temperature TSsp can be determined from the created response surface model.
- the amount of energy used for the heat source device 1 and the cold / hot water pump 2 is converted into a cost (amount) and totaled to obtain the total amount of energy used PW.
- the total energy consumption PW the sum of the energy consumption PW1 of the heat source device 1 and the energy consumption PW2 of the cold / hot water pump 2 without cost conversion.
- the energy amount converted into the cost may be used as the total energy usage amount PW.
- the total use energy amount PW may be a CO2 emission amount, a primary energy conversion value, a heavy oil conversion value, or the like.
- the actual values of the related parameters related to the current load situation are collected and accumulated, and the actual values of the collected and accumulated related parameters are plotted in a multidimensional space, and the RSM-S technique is used.
- a response surface model was created, but it is not always necessary to use such a technique, and functions corresponding to the response surface model using other techniques based on the actual values of related parameters collected and accumulated periodically.
- a model may be created, and the current optimum water supply temperature TSsp may be determined from the created function model.
- the system having one heat source device 1 has been described, but the optimum water supply temperature TSsp from each heat source device 1 is similarly determined even in a system having a plurality of heat source devices 1. Is possible. In this case, only the response temperature model to be created is required only by increasing the water supply temperature TS from each heat source device 1 as a related parameter, that is, only by increasing the number of dimensions in the multidimensional space.
- the water supply temperature control apparatus and method of the present invention includes various systems using a refrigerator and a hot water machine as a water supply temperature control apparatus and method for controlling the supply temperature of cold / hot water from a heat source device to a load device via a circulation pump. It is possible to use it.
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Abstract
Description
TSPWminを現在の最適送水温度TSspとして決定し、この決定した最適送水温度TS
spを熱源機器1へ送る。熱源機器1は、熱源機器制御装置15からの最適送水温度TSspを受けて、熱源機器1からの冷温水の出口温度を最適値TSspに合わせ込むように自己の能力を調整する。
曲面モデルの断面を現在の外気温度toutRで切り出し(図5参照)、この切り出した
応答曲面モデルの断面において合計使用エネルギー量PWが最小となる送水温度TSPWminを求め、この送水温度TSPWminを現在の最適送水温度TSspとして決定する(ステップS105)。そして、この決定した最適送水温度TSspを熱源機器1へ送る(ステップS106)。
切り出し、この切り出した応答曲面モデルの断面において合計使用エネルギー量PWが最小となる送水温度TSPWminを求め、この送水温度TSPWminを現在の最適送水温度TSspとして決定する。
Claims (6)
- 熱源機器からの循環ポンプを介する負荷機器への冷温水の送水温度を制御する送水温度制御装置において、
前記熱源機器の運転中、現在の負荷状況に関連する関連パラメータとして前記熱源機器の使用エネルギー量、前記循環ポンプの使用エネルギー量、前記送水温度および予め定められた所定のパラメータの実績値を定期的に収集・蓄積する実績値収集手段と、
この実績値収集手段によって収集・蓄積された前記関連パラメータの実績値に基づいて、前記熱源機器および前記循環ポンプを含む使用機器の合計使用エネルギー量が最小となる現在の負荷状況に応ずる送水温度を求め、この送水温度を現在の最適送水温度として決定する最適送水温度決定手段と
を備える送水温度制御装置。 - 前記最適送水温度決定手段は、
前記実績値収集手段によって収集された関連パラメータの実績値を多次元空間にプロットし補間して作成された応答曲面モデルより現在の最適送水温度を決定する
請求項1に記載の送水温度制御装置。 - 前記合計使用エネルギー量は、コストに換算されたエネルギー量である
請求項1又は2に記載の送水温度制御装置。 - 熱源機器からの循環ポンプを介する負荷機器への冷温水の送水温度を制御する送水温度制御方法おいて、
前記熱源機器の運転中、現在の負荷状況に関連する関連パラメータとして前記熱源機器の使用エネルギー量、前記循環ポンプの使用エネルギー量、前記送水温度および予め定められた所定のパラメータの実績値を定期的に収集・蓄積する実績値収集ステップと、
この実績値収集ステップによって収集・蓄積された前記関連パラメータの実績値に基づいて、前記熱源機器および前記循環ポンプを含む使用機器の合計使用エネルギー量が最小となる現在の負荷状況に応ずる送水温度を求め、この送水温度を現在の最適送水温度として決定する最適送水温度決定ステップと
を備える送水温度制御方法。 - 前記最適送水温度決定ステップは、
前記実績値収集ステップによって収集された関連パラメータの実績値を多次元空間にプロットし補間して作成された応答曲面モデルより現在の最適送水温度を決定する
請求項4に記載の送水温度制御方法。 - 前記合計使用エネルギー量は、コストに換算されたエネルギー量である
請求項4又は5に記載の送水温度制御方法。
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