DE760453T1 - Air conditioning with subcooler and relaxation devices connected in series - Google Patents

Air conditioning with subcooler and relaxation devices connected in series

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Publication number
DE760453T1
DE760453T1 DE0760453T DE96630051T DE760453T1 DE 760453 T1 DE760453 T1 DE 760453T1 DE 0760453 T DE0760453 T DE 0760453T DE 96630051 T DE96630051 T DE 96630051T DE 760453 T1 DE760453 T1 DE 760453T1
Authority
DE
Germany
Prior art keywords
working fluid
heat exchanger
expansion valve
vapor
liquid
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.)
Pending
Application number
DE0760453T
Other languages
German (de)
Other versions
DE69630051T2 (en
DE69630051D1 (en
Inventor
Ruddy C Bussjager
James M Mckallip
Lester N Miller
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.)
Carrier Corp
Original Assignee
Carrier Corp
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 Carrier Corp filed Critical Carrier Corp
Publication of DE760453T1 publication Critical patent/DE760453T1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00Subcoolers, desuperheaters or superheaters
    • F25B40/02Subcoolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00Compression machines, plants or systems with non-reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control 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
    • F24F11/84Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General 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
    • F25B2400/04Refrigeration circuit bypassing means
    • F25B2400/0417Refrigeration circuit bypassing means for the subcooler

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Central Air Conditioning (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (10)

DE/EP &Pgr; 'pn <*3 &pgr; 96 630 051.9 PatentansprücheDE/EP &Pgr; 'pn <*3 &pgr; 96 630 051.9 Patent claims 1. Klimaanlage mit gesteuerter latenter Kühlung, gekennzeichnet durch einen Kompressor, der eine Saugseite hat, welcher ein Arbeitsfluid als ein Dampf mit niedriger Temperatur zugeführt wird, und eine Auslaßseite, an der das Arbeitsfluid als ein Dampf mit einem hohen Druck und erhöhter Temperatur abgegeben wird; einen Außenkondensatorwärmetauscher, der mit dem Dampf hohen Druckes versorgt wird, um Wärme aus dem Arbeitsfluid an die äußere Luft abzugeben und das Arbeitsfluid als eine Flüssigkeit mit hohem Druck abzugeben; eine Innenverdampferschlange, die durch eine Flüssigkeitsleitung aus dem Kondensatorwärmetauscher mit dem Arbeitsfluid hohen Druckes versorgt wird, mit einer Expansionsventileinrichtung zum Reduzieren des Druckes des Arbeitsfluids, um dieses in eine Flüssigkeit mit niedrigem Druck zu verwandeln, und einer Wärmetauschereinrichtung, in der die Wärme aus einem Strom von Innenluft durch die Niederdruckflüssigkeit absorbiert wird, so daß das Arbeitsfluid in einen Niederdruckdampf verwandelt wird, und der Niederdruckdampf durch eine Dampfleitung zu der Saugseite des Kompressors geleitet wird; einen Nachkühlerwärmetauscher, der einen Einlaß hat, welcher mit dem Kondensatorwärmetauscher verbunden ist, um die Hochdruckflüssigkeit zu empfangen, und einen Auslaß, wobei der Nachkühlerwärmetauscher in dem Innenluftstrom angeordnet ist, der die Innenverdampf erwärmetauschereinrichtung verläßt, um das Arbeitsfluid nachzukühlen und die Temperatur des austretenden Innenluft-Stroms zu erhöhen; eine Strömungsdrossel, die mit dem Auslaß des Nachkühlerwärmetauschers und mit der Expansionsventileinrichtung des Innenverdampfers verbunden ist; eine Bypasseinrichtung, um das flüssige Hochdruckarbeitsfluid um den Nachkühlerwärmetauscher herumzuleiten; und eine Steuereinrichtung, die, wenn Kühlung und Entfeuchtung verlangt werden, bewirkt, daß das flüssige Hochdruckarbeitsfluid zuerst durch den Nachkühlerwärmetauscher und dann in Reihe durch die Strömungsdrossel und die Expansionsventileinrichtung zu der Innenver-1. A controlled latent cooling air conditioning system characterized by a compressor having a suction side to which a working fluid is supplied as a low temperature vapor and an outlet side to which the working fluid is discharged as a high pressure vapor at an elevated temperature; an outdoor condenser heat exchanger supplied with the high pressure vapor to release heat from the working fluid to the outside air and discharge the working fluid as a high pressure liquid; an indoor evaporator coil supplied with the high pressure working fluid through a liquid line from the condenser heat exchanger, with an expansion valve means for reducing the pressure of the working fluid to convert it into a low pressure liquid, and a heat exchanger means in which the heat from a stream of indoor air is absorbed by the low pressure liquid so that the working fluid is converted into a low pressure vapor, and the low pressure vapor is passed through a vapor line to the suction side of the compressor; an aftercooler heat exchanger having an inlet connected to the condenser heat exchanger to receive the high pressure liquid and an outlet, the aftercooler heat exchanger being arranged in the indoor air stream leaving the indoor evaporator heat exchanger means to aftercool the working fluid and increase the temperature of the exiting indoor air stream; a flow restrictor connected to the outlet of the aftercooler heat exchanger and to the expansion valve device of the indoor evaporator; a bypass device for bypassing the high pressure liquid working fluid around the aftercooler heat exchanger; and a control device which, when cooling and dehumidification are required, causes the high pressure liquid working fluid to pass first through the aftercooler heat exchanger and then in series through the flow restrictor and the expansion valve device to the indoor evaporator. dampferschlange geleitet wird, und, wenn normale Kühlung verlangt wird, bewirkt, daß das flüssige Hochdruckarbeitsfluid durch die Bypasseinrichtung aus dem Kondensatorwärmetauscher direkt zu der Expansionsventileinrichtung und dann zu der Verdampferschlange geleitet wird.evaporator coil and, when normal cooling is required, causes the high pressure liquid working fluid to be directed through the bypass means from the condenser heat exchanger directly to the expansion valve means and then to the evaporator coil. 2. Klimaanlage nach Anspruch 1, wobei die Bypasseinrichtung einen Flüssigkeitsleitungsbypasszweig hat, der mit der Expansionsventileinrichtung der Verdampferschlange verbunden ist; die Flüssigkeitsleitung einen Nachkühlerzweig hat, der mit dem Einlaß des Nachkühlerwärmetauschers verbunden ist; die Strömungsdrossel in einer Nachkühlerflüssigkeitsleitung angeordnet ist, die den Unterkühlerwärmetauscherauslaß und die Expansionsventi!einrichtung der Verdampferschlange verbindet; .und die Steuereinrichtung ein Flüssigkeitsleitungsmagnetventil aufweist, das in dem Flüssigkeitsleitungsbypasszweig angeordnet ist, und eine Steuerschaltungseinrichtung, die mit dem Magnetventil verbunden ist, um das Magnetventil zu öffnen, wenn normale Kühlung verlangt wird, und um das Magnetventil zu schließen, wenn Kühlung und Entfeuchtung verlangt werden.2. The air conditioning system of claim 1, wherein the bypass means includes a liquid line bypass branch connected to the evaporator coil expansion valve means; the liquid line includes an aftercooler branch connected to the aftercooler heat exchanger inlet; the flow restrictor is disposed in an aftercooler liquid line connecting the subcooler heat exchanger outlet and the evaporator coil expansion valve means; and the control means includes a liquid line solenoid valve disposed in the liquid line bypass branch and control circuit means connected to the solenoid valve for opening the solenoid valve when normal cooling is required and for closing the solenoid valve when cooling and dehumidification are required. 3. Klimaanlage nach Anspruch 1, wobei die Strömungsdrossel eine feste Strömungsdrosselvorrichtung ist.3. The air conditioning system according to claim 1, wherein the flow restrictor is a fixed flow restrictor device. 4. Klimaanlage nach Anspruch 1, wobei die Strömungsdrosselvorrichtung ein thermostatisches Expansionsventil aufweist.4. The air conditioning system according to claim 1, wherein the flow throttling device comprises a thermostatic expansion valve. 5. Klimaanlage nach Anspruch 4, wobei das thermostatische Expansionsventil eine Ausgleichsleitung hat, die mit der Dampfleitung verbunden ist, und einen Temperaturdetektor, der mit der Dampfleitung stromabwärts der Verdampferschlange, aber vor der Saugseite des Kompressors mit der Dampfleitung verbunden ist.5. The air conditioning system of claim 4, wherein the thermostatic expansion valve has a balance line connected to the vapor line and a temperature detector connected to the vapor line downstream of the evaporator coil but upstream of the suction side of the compressor. 6. Klimaanlage, die gekennzeichnet ist durch einen Kompressor, der eine Saugseite hat, welcher ein Arbeitsfluid als ein Dampf mit niedriger Temperatur zugeführt wird, und eine Auslaßseite, an der das Arbeitsfluid als ein Dampf mit einem hohen Druck6. Air conditioning system characterized by a compressor having a suction side to which a working fluid is supplied as a vapor at low temperature and an outlet side to which the working fluid is supplied as a vapor at high pressure und erhöhter Temperatur abgegeben wird; einen Kondensatorwärmetauscher, der mit dem Dampf hohen Druckes versorgt wird, um Wärme aus dem Arbeitsfluid an die Luft abzugeben und das Arbeitsfluid als eine Flüssigkeit mit hohem Druck abzugeben; eine Verdampferschlange, die durch eine Flüssigkeitsleitung aus dem Kondensatorwärmetauscher mit dem Arbeitsfluid hohen Druckes versorgt wird, mit einer Expansionsventileinrichtung zum Reduzieren des Druckes des Arbeitsf luids und einer Wärmetauschereinrichtung, in der Wärme aus einem strömenden Medium durch die Niederdruckflüssigkeit absorbiert wird, so daß das Arbeitsfluid in einen Niederdruckdampf verwandelt wird, und der Niederdruckdampf durch eine Dampfleitung zu der Saugseite des Kompressors geleitet wird; die Verbesserung, welche eine Strömungsdrossel in der Flüssigkeitsleitung stromabwärts der Expansionsventileinrichtung und mit dieser in Reihe angeordnet umfaßt, wobei die Expansionsventileinrichtung dafür ausgelegt ist, das Arbeitsfluid der Strömungsdrossel nur als Flüssigkeit mit einem Druck zuzuführen, der gegenüber dem hohen Druck reduziert ist, und wobei die Strömungsdrossel dafür ausgelegt ist, den Druck des Arbeitsfluids weiter zu reduzieren und dasselbe in eine Zweiphasenmischung umzuwandeln.and elevated temperature; a condenser heat exchanger, supplied with the high pressure vapor to release heat from the working fluid to the air and to discharge the working fluid as a high pressure liquid; an evaporator coil, supplied with the high pressure working fluid through a liquid line from the condenser heat exchanger, with an expansion valve device for reducing the pressure of the working fluid and a heat exchanger device in which heat from a flowing medium is absorbed by the low pressure liquid so that the working fluid is converted into a low pressure vapor, and the low pressure vapor is passed through a vapor line to the suction side of the compressor; the improvement, which includes a flow restrictor in the liquid line downstream of the expansion valve means and arranged in series therewith, wherein the expansion valve means is adapted to supply the working fluid to the flow restrictor only as a liquid at a pressure reduced from the high pressure, and wherein the flow restrictor is adapted to further reduce the pressure of the working fluid and convert it into a two-phase mixture. 7. Klimaanlage nach Anspruch 6, wobei die Strömungsdrossel eine feste Expansionsvorrichtung umfaßt und wobei die Expansionsventileinrichtung eine sich automatisch einstellende Strömungsdrosselvorrichtung umfaßt.7. An air conditioning system according to claim 6, wherein the flow restrictor comprises a fixed expansion device and wherein the expansion valve device comprises an automatically adjusting flow restrictor device. 8. Klimaanlage nach Anspruch 6, wobei die Expansionsventileinrichtung eine Ausgleichsleitung hat, die mit der Dampfleitung verbunden ist, und einen Temperaturdetektor, der mit der Dampfleitung stromabwärts der Verdampferschlange, aber vor der Saugseite des Kompressors verbunden ist.8. The air conditioning system of claim 6, wherein the expansion valve means has a balance line connected to the vapor line and a temperature detector connected to the vapor line downstream of the evaporator coil but upstream of the suction side of the compressor. 9. Klimaanlage nach Anspruch 6, wobei die Verdampferschlange mehrere Kühlkreise innerhalb der Schlange hat, von denen jeder einen Einlaß und einen Auslaß hat, wobei ein Einlaßverteiler die Expansionsventileinrichtung mit jedem Einlaß verbindet und ein Auslaßsammler jeden Auslaß mit der Dampfleitung verbindet9. The air conditioning system of claim 6, wherein the evaporator coil has a plurality of cooling circuits within the coil, each having an inlet and an outlet, an inlet manifold connecting the expansion valve means to each inlet and an outlet header connecting each outlet to the vapor line DE/EPO 769453T1EN/EPO 769453T1 und wobei die Strömungsdrossel mehrere feste Expansionsvorrichtungen hat, die in den Einlassen angeordnet sind, wobei die Expansionsventileinrichtung eine gleichmäßige Verteilung der Flüssigkeit jeweils auf die festen Expansionsvorrichtungen sicherstellt.and wherein the flow restrictor has a plurality of fixed expansion devices arranged in the inlets, the expansion valve means ensuring an even distribution of the liquid to the fixed expansion devices, respectively. 10. Klimaanlage nach Anspruch 9, wobei die Expansionsventileinrichtung ein thermostatisches Expansionsventil umfaßt, das eine Ausgleichsleitung hat, die mit der Dampfleitung verbunden ist, und einen Temperaturdetektor, der mit der Dampfleitung stromabwärts der Verdampferschlange, aber vor der Saugseite des Kompressors verbunden ist.10. The air conditioning system of claim 9, wherein the expansion valve means comprises a thermostatic expansion valve having a balance line connected to the vapor line and a temperature detector connected to the vapor line downstream of the evaporator coil but upstream of the suction side of the compressor.
DE0760453T 1995-08-30 1996-08-23 Air conditioning with subcooler and relaxation devices connected in series Pending DE760453T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52099195A 1995-08-30 1995-08-30

Publications (1)

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DE760453T1 true DE760453T1 (en) 1997-09-11

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DE0760453T Pending DE760453T1 (en) 1995-08-30 1996-08-23 Air conditioning with subcooler and relaxation devices connected in series

Country Status (9)

Country Link
EP (1) EP0760453A2 (en)
JP (1) JPH09119749A (en)
KR (1) KR970011615A (en)
CN (1) CN1149692A (en)
AU (1) AU6428696A (en)
BR (1) BR9603559A (en)
DE (1) DE760453T1 (en)
ES (1) ES2098215T1 (en)
MX (1) MX9603136A (en)

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DE10042830A1 (en) * 2000-08-30 2002-03-14 Menerga Appbau Gmbh Conditioning plant cooling and especially drying air, heats air using thermal energy from liquid coolant
JP3253021B1 (en) * 2001-03-02 2002-02-04 株式会社荏原製作所 Heat pump and dehumidifying air conditioner
DE20204746U1 (en) * 2002-03-26 2003-08-07 Kreutzfeldt, Nils, 23966 Wismar Air conditioning device for regulating heat and humidity in closed rooms
WO2005116540A1 (en) * 2004-05-24 2005-12-08 Carrier Corporation Two phase or subcooling reheat system
KR100589906B1 (en) * 2004-07-24 2006-06-19 삼성전자주식회사 Air conditioner
CN100402947C (en) * 2006-08-22 2008-07-16 东南大学 Thermostatic dehumidifying method and equipment
JP2009257708A (en) * 2008-04-21 2009-11-05 Daikin Ind Ltd Heat exchanger unit
CH705909A1 (en) 2011-12-16 2013-06-28 Bs2 Ag Heat exchanger for dehumidification.
CN105627470B (en) * 2015-12-30 2018-07-03 同济大学 A kind of air-conditioner set based on supercooling reheating
CN107036194B (en) * 2017-05-27 2023-04-07 山东美诺邦马节能科技有限公司 High-temperature water-cooling double-cold-source dehumidifying fresh air ventilator unit
CN107940803A (en) * 2017-11-21 2018-04-20 珠海格力电器股份有限公司 Heat pump system and frequency converter cooling method
JP7054308B2 (en) * 2018-10-10 2022-04-13 エスペック株式会社 Environmental test equipment and air conditioning equipment
CN110131820B (en) * 2019-05-15 2024-07-16 格力电器(合肥)有限公司 Air conditioning equipment
US20230056774A1 (en) * 2021-08-17 2023-02-23 Solarisine Innovations, Llc Sub-cooling a refrigerant in an air conditioning system

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Also Published As

Publication number Publication date
AU6428696A (en) 1997-03-06
EP0760453A2 (en) 1997-03-05
BR9603559A (en) 1998-05-19
MX9603136A (en) 1997-03-29
CN1149692A (en) 1997-05-14
ES2098215T1 (en) 1997-05-01
JPH09119749A (en) 1997-05-06
KR970011615A (en) 1997-03-27

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