EP2600080A2 - Verfahren zur Überprüfung der Wärmepumpenposition in einem Wärmepumpensystem und Wärmepumpensystem - Google Patents

Verfahren zur Überprüfung der Wärmepumpenposition in einem Wärmepumpensystem und Wärmepumpensystem Download PDF

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Publication number
EP2600080A2
EP2600080A2 EP12194517.4A EP12194517A EP2600080A2 EP 2600080 A2 EP2600080 A2 EP 2600080A2 EP 12194517 A EP12194517 A EP 12194517A EP 2600080 A2 EP2600080 A2 EP 2600080A2
Authority
EP
European Patent Office
Prior art keywords
heat
water
heat pump
pumps
heat pumps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12194517.4A
Other languages
English (en)
French (fr)
Other versions
EP2600080A3 (de
Inventor
Kei Akatsuka
Toru Yamaguchi
Takachika MORI
Takeshi FUCHIMOTO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP2600080A2 publication Critical patent/EP2600080A2/de
Publication of EP2600080A3 publication Critical patent/EP2600080A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0314—Temperature sensors near the indoor heat exchanger
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • F25B2400/061—Several compression cycles arranged in parallel the capacity of the first system being different from the second

Definitions

  • the present invention relates to a heat pump position checking method in a heat pump system in which a plurality of heat pumps are connected via a water pipe and a heat pump system.
  • a heat pump system using a plurality of heat pumps e.g., an air-cooled heat pump chiller
  • the plurality of heat pumps are connected to a water pipe, and a water heat exchanger of each heat pump exchanges heat with water flowing through the water pipe.
  • a water heat exchanger of each heat pump exchanges heat with water flowing through the water pipe.
  • water in the water pipe is heated or cooled.
  • a module chiller in which two heat pumps are connected and act as one unit.
  • PTL 1 discloses a technique for preventing low-load operation of an absorption cold/warm water generator by integrating an air-cooled heat pump chiller with the absorption cold/warm water generator and improving the operating efficiency of the entire system under low-load conditions.
  • a module chiller when a plurality of heat pumps are to be connected to the same water pipe, the heat pumps are generally arranged in parallel. Additionally, connection of the water pipe in the module chiller is performed in, e.g., a factory and is not performed on the spot at an installation location. For this reason, the module chiller does not include means for determining whether the heat pumps are connected in series or in parallel, means for determining the order of the heat pumps from the upstream side to the downstream side in the case of series connection, means for checking the connection status of the heat pumps, and the like.
  • a module chiller which allows selection of a method for connecting a water pipe and execution of work on the spot, i.e., a module chiller which allows selection of whether to connect a plurality of heat pumps in parallel or in series.
  • a module chiller which allows selection of whether to connect a plurality of heat pumps in parallel or in series.
  • an installer or the like of the module chiller manually sets whether the plurality of heat pumps are to be connected in series or in parallel, the order of the heat pumps from the upstream side to the downstream side in the case of series connection, and the like in a microcomputer.
  • the manual setting can cause an inputting error. If the module chiller is operated with improper settings, inefficient operation is continued, which may impair reliability.
  • the present invention has been made in consideration of the above-described circumstances, and has as its object to provide a heat pump position checking method in a heat pump system capable of correctly checking the positional relationship among heat pumps and achieving efficient operation and improvement in reliability and a heat pump system.
  • a heat pump position checking method in a heat pump system is a heat pump position checking method in a heat pump system in which a plurality of heat pumps are connected to a water pipe, and a water heat exchanger of each of the heat pumps exchanges heat with water flowing through the water pipe, including a first step of putting one heat pump into cooling operation or heating operation, a second step of detecting temperatures of water in the water pipe flowing into the plurality of heat pumps, and a third step of estimating a positional relationship among the plurality of heat pumps on the basis of the heat pump in cooling operation or heating operation and the temperatures of water detected at the plurality of heat pumps.
  • the one heat pump performs cooling operation or heating operation, which changes the temperature of water flowing through the water pipe. If a different heat pump is connected downstream of the heat pump in operation, the temperature of water in the water pipe flowing into the heat pump changes. From this, it can be seen that the heat pump, for which a change in the temperature of water is detected, is located downstream of the heat pump in operation. If a change in the temperature of water is not detected, the heat pump is installed upstream of or in parallel with the heat pump in operation. For this reason, the positional relationship among the heat pumps, i.e., the order in which the plurality of heat pumps are connected via the water pipe can be checked.
  • the first aspect may further include a fourth step of stopping the heat pump in cooling operation or heating operation after the temperatures of water are detected in the second step and putting one heat pump which is different from the heat pump already operated in the first step into cooling operation or heating operation and a fifth step of integrating the newly estimated positional relationship among the plurality of heat pumps with an already estimated positional relationship among the plurality of heat pumps, and the first to fifth steps may be repeated until positions of all of the plurality of heat pumps are determined.
  • the one heat pump is put into cooling operation or heating operation, and the heat pump in cooling operation or heating operation is stopped after the temperatures of water are detected.
  • the one different heat pump is then put into cooling operation or heating operation.
  • a positional relationship among the heat pumps is newly estimated, in addition to an already estimated positional relationship among the heat pumps.
  • the newly estimated positional relationship among the heat pumps is integrated with the already estimated positional relationship among the heat pumps.
  • the integration results in obtainment of detailed information on the positional relationship among the heat pumps.
  • Repetition of the first to fifth steps of the present invention reveals the positional relationship among the heat pumps and determines positions of all the heat pumps.
  • a heat pump position checking method in a heat pump system is a heat pump position checking method in a heat pump system in which a plurality of heat pumps are connected to a water pipe, and a water heat exchanger of each of the heat pumps exchanges heat with water flowing through the water pipe, including a first step of simultaneously putting one first heat pump into cooling operation and putting one different second heat pump into heating operation, a second step of detecting temperatures of water in the water pipe flowing into the plurality of heat pumps, and a third step of estimating a positional relationship among the plurality of heat pumps on the basis of the first heat pump in cooling operation, the second heat pump in heating operation, and the temperatures of water detected at the plurality of heat pumps.
  • the one first heat pump performs cooling operation
  • the one different second heat pump performs heating operation, which changes the temperature of water flowing through the water pipe.
  • a different heat pump is connected downstream of the first or second heat pump in operation
  • the temperature of water in the water pipe flowing into the heat pump changes.
  • the heat pump for which a change in the temperature of water is detected, is located downstream of the first or second heat pump in operation. If a change in the temperature of water is not detected, it can be seen that the heat pump is installed upstream of or in parallel with the first or second heat pump in operation. For this reason, the positional relationship among the heat pumps, i.e., the order in which the plurality of heat pumps are connected via the water pipe can be checked.
  • a heat pump system is a heat pump system in which a plurality of heat pumps are connected to a water pipe, and a water heat exchanger of each of the heat pumps exchanges heat with water flowing through the water pipe, including an operation control unit which puts one heat pump into cooling operation or heating operation, a water temperature detection unit which detects temperatures of water in the water pipe flowing into the plurality of heat pumps, and a positional relationship estimation unit which estimates a positional relationship among the plurality of heat pumps on the basis of the heat pump in cooling operation or heating operation and the temperatures of water detected at the plurality of heat pumps.
  • a heat pump system is a heat pump system in which a plurality of heat pumps are connected to a water pipe, and a water heat exchanger of each of the heat pumps exchanges heat with water flowing through the water pipe, including an operation control unit which puts one first heat pump into cooling operation and puts one different second heat pump into heating operation, a water temperature detection unit which detects temperatures of water in the water pipe flowing into the plurality of heat pumps, and a positional relationship estimation unit which estimates a positional relationship among the plurality of heat pumps on the basis of the first heat pump in cooling operation, the second heat pump in heating operation, and the temperatures of water detected at the plurality of heat pumps.
  • the positional relationship among the heat pumps can be correctly checked, which allows efficient operation and improvement in reliability.
  • the configuration of a heat pump system 1 will first be described with reference to Fig. 1 .
  • the heat pump system 1 according to the present embodiment is composed of a plurality of heat pumps 2, water pipes 11 connected to the heat pumps 2, and the like.
  • the heat pumps 2 are, for example, air-cooled heat pump chillers and can generate chilled water or warm water by exchanging heat with water flowing through the water pipes 11.
  • the heat pump system 1 may be a module chiller in which the plurality of heat pumps 2 act as one unit.
  • the heat pump 2 comprises a compressor 5, a four-way valve 6, a water heat exchanger 7, an expansion valve 8, an air heat exchanger 9, an accumulator 10, and the like.
  • the compressor 5, four-way valve 6, water heat exchanger 7, expansion valve 8, air heat exchanger 9, and accumulator 10 are coupled by refrigerant piping 3 and constitute a refrigerant circuit.
  • a motor of the compressor 5 is driven by an inverter.
  • the speed of the motor i.e., the discharge rate of a refrigerant is adjusted by the output frequency of the inverter.
  • the air heat exchanger 9 causes outside air and the refrigerant to exchange heat
  • the water heat exchanger 7 causes water and the refrigerant to exchange heat
  • the accumulator 10 prevents some of the refrigerant that has failed to be gasified by an evaporator (the water heat exchanger 7 or air heat exchanger 9) from being sucked into the compressor 5 while being liquid.
  • a temperature sensor 4 is provided at an inlet of the water heat exchanger 7 where the water pipe 11 is connected. A temperature detected by the temperature sensor 4 is sent as the temperature of water in the water pipe 11 to a water temperature detection unit 15 of a control unit 12.
  • the heat pump 2 switches between heating operation and cooling (or defrosting) operation in response to a change in refrigerant flow direction caused by switching of the four-way valve 6.
  • the refrigerant discharged from the compressor 5 flows through the water heat exchanger 7, expansion valve 8, air heat exchanger 9, and accumulator 10 in this order.
  • the water heat exchanger 7 acts as a condenser, and the air heat exchanger 9 acts as an evaporator. Warm water heated by the water heat exchanger 7 is supplied to the next heat pump 2 or the outside via the water pipe 11.
  • the refrigerant discharged from the compressor 5 flows through the air heat exchanger 9, expansion valve 8, water heat exchanger 7, and accumulator 10 in this order.
  • the air heat exchanger 9 acts as a condenser
  • the water heat exchanger 7 acts as an evaporator. Chilled water cooled by the water heat exchanger 7 is supplied to the next heat pump 2 or the outside via the water pipe 11.
  • the positional relationship among the plurality of heat pumps 2, i.e., whether the heat pumps 2 are connected in series or in parallel, the order in which the heat pumps 2 are connected from the upstream side to the downstream side in the case of series connection, and the like are automatically checked.
  • the present embodiment is performed, for example, during trial operation after the heat pump system 1 is installed at an installation location, and connection of the water pipes 11 is completed.
  • the present embodiment may also be performed after reconnection of the water pipes 11 of the heat pump system 1.
  • the heat pump system 1 includes the control unit 12 that operates the plurality of heat pumps 2, detects the temperature of water in the water heat exchanger 7 of each heat pump 2, and estimates the positional relationship among the heat pumps 2.
  • the control unit 12 and the heat pumps 2 are connected by, for example, a control cable 13, and control signals are transmitted and received therebetween.
  • Fig. 1 shows a case where three heat pumps 2 are connected in series via the water pipes 11.
  • the control unit 12 includes, for example, an operation control unit 14, the water temperature detection unit 15, and a positional relationship estimation unit 16.
  • the control unit 12 may be provided separately from the heat pumps 2 or may be provided at any one of the heat pumps 2.
  • the operation control unit 14 puts the heat pump 2 into cooling operation or heating operation.
  • cooling operation operating conditions are set such that cooled water at a fixed temperature (e.g., 7°C) is supplied from an outlet of the water heat exchanger 7 to the outside when water at a fixed temperature (e.g., 12°C) is supplied to the inlet of the water heat exchanger 7 connected to the water pipe 11.
  • a fixed temperature e.g., 7°C
  • the operation control unit 14 stops the heat pump 2 in cooling operation or heating operation after the temperature of water at the inlet of the water heat exchanger 7 of the heat pump 2 is detected.
  • the water temperature detection unit 15 detects the temperature of water in the water pipe 11 flowing into the heat pump 2 or the surface temperature of the water heat exchanger 7 that reflects the temperature of waster (hereinafter referred to as "temperature of water”) on the basis of a measurement value obtained from the temperature sensor 4.
  • the water temperature detection unit 15 detects the temperature of water for each of all the heat pumps 2 of the heat pump system 1. Detected temperatures of water are associated one-to-one with the identifiers of the heat pumps 2.
  • the transition of temperature that changes according to operating conditions e.g., the temperature of the heat pump 2 before cooling (heating) operation and the temperature during steady operation
  • the positional relationship estimation unit 16 estimates a positional relationship among the plurality of heat pumps 2 on the basis of one heat pump 2 in cooling operation or heating operation and temperatures of water detected at the plurality of heat pumps 2.
  • the positional relationship estimation unit 16 integrates the newly estimated positional relationship among a plurality of heat pumps 2 with an already estimated positional relationship among the plurality of heat pumps 2.
  • the control unit 12 judges that the positional relationship is determined and performs address setting.
  • a method for estimating a positional relationship is, for example, as follows.
  • One heat pump 2 performs cooling operation or heating operation, which changes the temperature of water flowing through the water pipe 11. If one different heat pump 2 is connected downstream of the heat pump 2 in operation, the temperature of water in the water pipe 11 flowing into the downstream heat pump 2 changes. The change shows the heat pump 2, for which a change in the temperature of water has been detected, is located downstream of the heat pump 2 in operation. If a change in the temperature of water is not detected, it is apparent that the heat pump 2 in question is installed upstream of or in parallel with the heat pump 2 in operation. For this reason, the positional relationship among the heat pumps 2, i.e., the order in which the plurality of heat pumps 2 are connected via the water pipes 11 can be checked.
  • step S1 one of the plurality of heat pumps 2 in the heat pump system 1 is put into cooling operation or heating operation.
  • the temperature of water at the inlet of each water heat exchanger 7 where the water pipe 11 is connected before the cooling (heating) operation is detected.
  • the operation of the heat pump 2 stabilizes the temperature of water in the water pipe 11 supplied from each water heat exchanger 7.
  • the temperature of water at the inlet of each water heat exchanger 7 at this time is also detected (step S2).
  • step S3 When the stabilized temperatures of water are sensed, the heat pump 2 in cooling operation or heating operation is stopped (step S3).
  • a positional relationship among the plurality of heat pumps 2 is estimated on the basis of the one heat pump 2 in cooling operation or heating operation and the temperatures of water detected at the plurality of heat pumps 2 (step S4).
  • the newly estimated positional relationship among the plurality of heat pumps 2 is integrated with an already estimated positional relationship among the plurality of heat pumps 2 (step S5) . Note that if steps S1 to S4 have been performed for the first time, there is no already estimated positional relationship among the plurality of heat pumps 2, and step S5 is skipped.
  • step S6 It is determined (step S6) whether the positional relationship among all the heat pumps 2 is determined in step S5. Steps S1 to S5 described above are repeated until the positions of all the heat pumps 2 are determined. In this case, the heat pump 2 to be operated is changed, and one different heat pump 2 is put into cooling operation or heating operation (step S8).
  • the positional relationship among the heat pumps 2 in the heat pump system 1 is not manually but automatically set. Accordingly, a human error such as incorrect input can be prevented, and efficient operation and improvement in reliability can be achieved.
  • Position checking operation is performed with the processes shown in Fig. 6 .
  • the temperature of water at an inlet of a water heat exchanger 7 of the heat pump A does not change, and the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps B, C, and D fall. It is thus estimated (1) that the heat pump A is installed upstream of the heat pumps B, C, and D, i.e., most upstream.
  • step S12 Only the heat pump B is then put into cooling operation (step S12). As a result, the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A and B do not change, and the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps C and D fall. It is thus estimated (2) that the heat pump B is installed upstream of the heat pumps C and D. It is also estimated from the fact (1) that the heat pumps A and B are installed in this order.
  • step S13 Only the heat pump C is further put into cooling operation (step S13). As a result, the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A, B, and C do not change, and the temperature of water at the inlet of the water heat exchanger 7 of the heat pump D falls. It is thus estimated (3) that the heat pump C is installed upstream of the heat pump D.
  • step S21 Only the heat pump A is put into cooling operation (step S21). As a result, the temperatures of water at inlets of water heat exchangers 7 of the heat pumps A, C, and D do not change, and the temperature of water at the inlet of the water heat exchanger 7 of the heat pump B falls. It is thus estimated (1) that the heat pump A is installed upstream of the heat pump B, i.e., most upstream and (2) that the heat pump A is installed downstream of or in parallel with the heat pumps C and D.
  • step S22 Only the heat pump B is then put into cooling operation (step S22). As a result, the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A, B, C, and D do not change. It is thus estimated (3) that the heat pump B is installed downstream of or in parallel with the heat pumps A, C, and D.
  • step S23 Only the heat pump C is further put into cooling operation (step S23). As a result, the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A, B, and C do not change, and the temperature of water at the inlet of the water heat exchanger 7 of the heat pump D falls. It is thus estimated (5) that the heat pump C is installed upstream of the heat pump D, i.e., most upstream and (6) that the heat pump C is installed downstream of or in parallel with the heat pumps A and B. It is estimated from the fact (5) that the heat pumps C and D are installed in this order.
  • Position checking operation according to a modification of the present embodiment will be described.
  • one heat pump 2 is put into cooling operation, and at the same time, one different heat pump 2 is put into heating operation.
  • This method can save more time than a method in which only one heat pump is put into cooling operation or heating operation.
  • Position checking operation is performed with the processes shown in Fig. 8 .
  • the heat pump A is put into cooling operation, and at the same time, the heat pump B is put into heating operation (step S31).
  • the difference in temperature between an inlet and an outlet of a water heat exchanger 7 caused by heating operation is assumed to be, for example, twice the difference in temperature between the inlet and the outlet of the water heat exchanger 7 caused by cooling operation.
  • the temperature of water at the inlet of the water heat exchanger 7 of the heat pump A does not change, the temperature of water at the inlet of the water heat exchanger 7 of the heat pump B falls, and the temperatures of water rise for the heat pumps C and D.
  • the heat pump A is installed upstream of the heat pump B and that the heat pumps A and B are installed in this order. Additionally, it is estimated (2) that the heat pump B is installed upstream of the heat pumps C and D.
  • the heat pump C is put into cooling operation, and at the same time, the heat pump D is put into heating operation (step S32).
  • the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A, B, and C do not change, and the temperature of water at the inlet of the water heat exchanger 7 of the heat pump D falls. Combined with the fact (1), it can thus be seen that the heat pumps A, B, C, and D are installed in this order.
  • Position checking operation is performed with the processes shown in Fig. 9 .
  • the heat pump A is put into cooling operation, and at the same time, the heat pump B is put into heating operation (step S41).
  • the difference in temperature between an inlet and an outlet of a water heat exchanger 7 caused by heating operation is assumed to be, for example, twice the difference in temperature between the inlet and the outlet of the water heat exchanger 7 caused by cooling operation.
  • the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A, C, and D do not change, and the temperature of water at the inlet of the water heat exchanger 7 of the heat pump B falls.
  • the heat pump C is put into cooling operation, and at the same time, the heat pump D is put into heating operation (step S42).
  • the temperatures of water at the inlets of the water heat exchangers 7 of the heat pumps A, B, and C do not change, and the temperature of water at the inlet of the water heat exchanger 7 of the heat pump D falls.
  • the heat pump C is installed upstream of the heat pump D and that the heat pumps C and D are installed in this order.
  • the heat pumps A and B are installed in parallel with the heat pumps C and D.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)
EP12194517.4A 2011-11-30 2012-11-28 Verfahren zur Überprüfung der Wärmepumpenposition in einem Wärmepumpensystem und Wärmepumpensystem Withdrawn EP2600080A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011262439A JP5812829B2 (ja) 2011-11-30 2011-11-30 ヒートポンプシステムにおけるヒートポンプの位置確認方法及びヒートポンプシステム

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EP2600080A2 true EP2600080A2 (de) 2013-06-05
EP2600080A3 EP2600080A3 (de) 2014-03-19

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EP12194517.4A Withdrawn EP2600080A3 (de) 2011-11-30 2012-11-28 Verfahren zur Überprüfung der Wärmepumpenposition in einem Wärmepumpensystem und Wärmepumpensystem

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CN103791672B (zh) * 2014-02-21 2018-10-09 西安格睿能源动力科技有限公司 一种循环冷却水系统的整体优化方法
JP6592858B2 (ja) * 2015-04-14 2019-10-23 三菱重工サーマルシステムズ株式会社 制御装置、制御方法及びプログラム

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