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WO2016058365A1 - Climatiseur et son procédé de fonctionnement - Google Patents

Climatiseur et son procédé de fonctionnement Download PDF

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Publication number
WO2016058365A1
WO2016058365A1 PCT/CN2015/078530 CN2015078530W WO2016058365A1 WO 2016058365 A1 WO2016058365 A1 WO 2016058365A1 CN 2015078530 W CN2015078530 W CN 2015078530W WO 2016058365 A1 WO2016058365 A1 WO 2016058365A1
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WO
WIPO (PCT)
Prior art keywords
working medium
air conditioning
conditioning unit
compressor
evaporator
Prior art date
Application number
PCT/CN2015/078530
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English (en)
Chinese (zh)
Inventor
刘华
张治平
王升
Original Assignee
珠海格力电器股份有限公司
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Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2016058365A1 publication Critical patent/WO2016058365A1/fr

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    • 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
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression

Definitions

  • the invention relates to the field of air conditioning, and in particular to an air conditioning unit and a running method.
  • Water is used as the refrigerant of the centrifugal air conditioning unit. Compared with other refrigerants, it has the advantages of safety, environmental protection, non-toxicity, non-combustibility, low cost, easy access, no need for oil circulation, and has great research value and market. prospect.
  • Fig. 1 The technical scheme mainly adopted by the centrifugal air conditioning unit using water as the refrigerant is shown in Fig. 1.
  • Two compressors are arranged in the compressor container 1a, and the first stage compressor 2a is driven by the first stage compressor motor 4a.
  • the compressor 3a is driven by a secondary compressor motor 5a, and the evaporator 7a and the condenser 6a are connected by a pipe having a throttle device 9a, and communicate with both sides of the compressor vessel 1a through pipes, respectively.
  • Both the evaporator 7a and the condenser 6a are vaporized in the evaporator 7a by the refrigerant water circulating by the evaporator circulation pump 8a, and are cooled by the chilled water while evaporating, and the water vapor is compressed into two stages and then enters the condenser 6a, and the water vapor Condensation inside the condenser 6a while transferring heat to the cooling water.
  • This solution installs the compressor, the evaporator 7a and the condenser 6a in separate containers, which are connected to each other by a pipe, and adopts a semi-closed structure.
  • the flow velocity of the water vapor in the pipe connected between the compressor and the evaporator 7a, the compressor and the condenser 6a is too high, resulting in an excessive pressure drop, resulting in a decrease in energy utilization efficiency of the unit, and a combination of these containers and pipes.
  • the overall occupancy of the unit is large.
  • the object of the present invention is to provide an air conditioning unit and a running method thereof, which can improve the machine The energy efficiency ratio of the group.
  • an aspect of the invention provides an air conditioning unit comprising: an evaporator 5, a compressor and a condenser 6 disposed in the same fully enclosed container 1, the container 1 further having an external portion
  • the condenser 6 supplies the evaporator 5 with a first circulation passage of a liquid circulating medium.
  • the evaporator 5 is capable of exchanging heat with the outside through heat exchange by internal indirect contact while evaporating the liquid circulating working medium driven by the evaporator circulation pump 7;
  • the compressor can suck the low temperature gaseous circulating working medium generated by the evaporator 5 through the suction end, compress the low temperature gaseous circulating working medium, and then discharge the high temperature gaseous circulating working medium through the exhaust end;
  • the condenser 6 is capable of converting the high temperature gaseous circulating working medium into the liquid circulating working medium by means of internal indirect contact heat exchange.
  • the compressor includes a primary compressor 2 and a secondary compressor 3, and an intermediate cooler 11 is provided between the primary compressor 2 and the secondary compressor 3, the primary compressor
  • the gaseous circulating medium discharged from the exhaust end of the second stage is cooled by the intercooler 11 and sucked by the suction end of the secondary compressor 3; the condenser 6 and the intercooler 11 are disposed between
  • There is a second circulation passage the liquid circulation medium can be supplied from the condenser 6 to the intercooler 11, and the liquid circulation medium in the second circulation passage is driven by the intercooler circulation pump 8. cycle.
  • the primary compressor 2 and the secondary compressor 3 are coaxially driven.
  • the primary compressor 2 and the secondary compressor 3 are driven in a split shaft.
  • an evaporator cycle working valve 10 is disposed in the first circulation passage, and an intermediate cooler circulation working valve 9 is disposed in the second circulation passage, and the flow rate of the circulating working medium can be adjusted.
  • the condenser 6 is connected to the cooling tower 12, and the high temperature gaseous circulating working medium can be indirectly contacted through the internal The heat exchange mode transfers heat to the high temperature heat transfer medium and converts it into the liquid circulation medium.
  • the evaporator 5 when used in a heat pump operating condition, the evaporator 5 is connected to an external heat source, and the liquid circulating working medium can absorb heat from the low temperature heat transfer medium through a heat exchange method of internal indirect contact, and converts into The low temperature gaseous circulating working fluid.
  • the evaporator 5 and the condenser 6 are shell-and-tube type, mosquito coil type or plate heat exchanger.
  • the air conditioning unit is a centrifugal air conditioning unit.
  • liquid circulating working fluid is refrigerant water.
  • another aspect of the present invention provides a method for operating an air conditioning unit, comprising the following steps:
  • the evaporator 5 exchanges heat with the outside through a heat exchange method of internal indirect contact while evaporating the liquid circulating working medium driven by the evaporator circulation pump 7;
  • the compressor sucks the low-temperature gaseous circulating working medium generated by the evaporator 5 through the suction end, compresses the low-temperature gaseous circulating working medium, and then discharges the high-temperature gaseous circulating working medium through the exhaust end;
  • the condenser 6 converts the high-temperature gaseous circulating working medium into the liquid circulating working medium through a heat exchange manner of internal indirect contact;
  • the condenser 6 replenishes the liquid circulating medium to the evaporator 5 through the first circulation passage of the air conditioning unit.
  • the compressor includes a primary compressor 2 and a secondary compressor 3, and compressing the low temperature gaseous circulating working medium specifically includes:
  • the primary compressor 2 performs one-stage compression on the low-temperature gaseous circulating working medium
  • the intercooler 11 cools the first-stage compressed gaseous circulating working medium through the liquid circulating working fluid driven by the intercooler circulating pump 8 , and the condenser 6 passes through the second circulation passage of the air conditioning unit
  • the intercooler 11 provides the liquid circulating working medium
  • the secondary compressor 3 performs secondary compression on the cooled gaseous circulating medium.
  • the air conditioning unit of the embodiment of the present invention has the compressor, the evaporator and the condenser all disposed in the same fully enclosed container, which can not only reduce the compressor and the evaporator, the compressor and the condenser.
  • the flow resistance reduces the pressure loss, thereby increasing the energy efficiency ratio of the unit and also reducing the overall volume of the air conditioning unit.
  • FIG. 1 is a schematic view of a centrifugal air conditioning unit using water as a refrigerant in the prior art
  • FIG. 2 is a schematic view of an embodiment of an air conditioning unit of the present invention
  • FIG. 3 is a schematic view of another embodiment of the air conditioning unit of the present invention.
  • FIG. 4 is a schematic flow chart of an embodiment of an air conditioning unit operating method according to the present invention.
  • FIG. 5 is a schematic flow chart of another embodiment of an air conditioning unit operating method according to the present invention.
  • 1a-compressor vessel 2a-first-stage compressor; 3a-secondary compressor; 4a-first-stage compressor motor; 5a-secondary compressor motor; 6a-condenser; 7a-evaporator; 8a-evaporator Circulating pump; 9a-throttle device;
  • 1-container 2-stage compressor; 3-stage compressor; 4-compressor motor; 41-stage compressor motor; 42-stage compressor motor; 5-evaporator; 7-evaporator circulation pump; 8-intercooler circulation pump; 9-intercooler circulation working valve; 10-evaporator circulating working valve; 11-intercooler; - Cooling tower; 13-user.
  • the air conditioning unit provided by the present invention comprises: an evaporator 5, a compressor and a condenser 6 disposed in the same fully enclosed container 1, and the outside of the container 1 is further provided with condensation
  • the device 6 supplies the evaporator 5 with a first circulation passage of a liquid circulating working medium, and the evaporator 5 can perform heat exchange with the outside through internal heat exchange by indirect contact while evaporating the liquid circulating working medium driven by the evaporator circulation pump 7.
  • the compressor can suck the low temperature gaseous circulating working medium generated by the evaporator 5 through the suction end, compress the low temperature gaseous circulating working medium, and then discharge the high temperature gaseous circulating working medium through the exhaust end;
  • the condenser 6 can take the high temperature gaseous state
  • the circulating working medium is converted into a liquid circulating working medium by heat exchange method of internal indirect contact.
  • the lower temperature gaseous circulating medium is sucked from the suction end, and the higher temperature gaseous circulating working medium is discharged from the exhaust end, so the low temperature and high temperature mentioned in this embodiment are relative. concept.
  • the air conditioning unit of the present invention is applicable to at least two operating conditions, namely, a cooling condition and a heat pump condition, and the structure and work flow of the unit itself need not be changed, and only the external connection object to the evaporator 5 and the condenser 6 is required. Make changes.
  • the condenser 6 When the air conditioning unit is used in a cooling condition, the condenser 6 is connected to the cooling tower 12, so that the high-temperature gaseous circulating medium can transfer heat to the high-temperature heat-transfer medium through the heat exchange method of internal indirect contact, and is converted into a liquid circulation.
  • the working medium; the evaporator 5 is connected to the customer end 13 to enable the liquid circulating working medium to be indirectly contacted while being evaporated.
  • the heat exchange mode absorbs the heat of the low temperature heat transfer medium of the user terminal 13.
  • the low temperature heat transfer medium is equivalent to the transport means for transferring the cold amount from the air conditioner room to the use room of the user terminal 13.
  • the condenser 6 may also employ air heat dissipation or other heat exchange means.
  • the low-temperature steam at the corresponding evaporator 5 is 7 to 12 ° C
  • the high-temperature steam at the condenser 6 is 30. ⁇ 35 ° C.
  • the evaporator 5 When the air conditioning unit is used in the heat pump working condition, the evaporator 5 is connected with an external heat source, so that the liquid circulating working medium can absorb heat from the low temperature heat carrying medium through the heat exchange mode of internal indirect contact, and is converted into a low temperature gaseous circulating working medium, and the condenser 6 Connected with the user end, the high temperature gaseous circulating working medium can be used to provide heat to the user end through the internal indirect contact heat exchange mode while condensing.
  • the external heat source may be outside air, soil or industrial waste gas.
  • the corresponding low temperature steam at the evaporator 5 is 10 to 15 ° C
  • the high temperature water vapor at the condenser 6 is 35. ⁇ 45 ° C.
  • the evaporator 5 and the condenser 6 may be shell-and-tube type, mosquito-repellent disc type or plate heat exchanger, etc., and have the advantage of high heat exchange performance.
  • the liquid circulating working fluid is refrigerant water
  • the air conditioning unit uses water as the refrigerant
  • the circulating working medium mentioned in the above embodiment is equivalent to the refrigerant.
  • the refrigerant is the refrigerant water
  • other refrigerants such as ammonia, freon and hydrocarbons can also be used. Since water is used as a refrigerant, it is safe, environmentally friendly, non-toxic, non-flammable, low in cost, easy to obtain, and does not require oil circulation, and is widely used.
  • the air conditioning unit is used for the refrigeration condition as an example for detailed description, and the working principle is similar when used in the heat pump working condition.
  • the air conditioning unit when used in the refrigeration condition, the circulating working medium in the usual sense is the refrigerant water, and the high temperature heat carrying medium is the cooling water and the low temperature heat carrying medium. It is chilled water.
  • the air conditioning unit of the prior art installs the evaporator 7a, the compressor and the condenser 6a in separate containers, which are connected to each other by a pipe having a diameter smaller than the diameter of the evaporator 7a and the condenser 6a (for example, 0.5 m). It is a semi-closed structure.
  • a pipe having a diameter smaller than the diameter of the evaporator 7a and the condenser 6a (for example, 0.5 m). It is a semi-closed structure.
  • the pressure drop is excessively large, the efficiency of the unit is lowered, and the volume of the entire unit is also large.
  • the present invention arranges the evaporator 5, the compressor and the condenser 6 in the same fully enclosed container 1, the diameter of the pipe is equivalent to the diameter of the container 1 of the entire unit (for example, 2 m),
  • the diameter of the pipe through which the gaseous circulating medium flows is relatively large, so this embodiment can not only reduce the flow resistance between the compressor and the evaporator, the compressor and the condenser, but also reduce the pressure loss, thereby improving the energy efficiency ratio of the unit and saving Pipeline and reduce the size of the air conditioning unit.
  • the compression of the air conditioning unit When the compression of the air conditioning unit is relatively low or medium, it can be realized only by the first-stage compressor for the simple structure and operation. When the compression is relatively high, if the single-stage compression cycle is adopted, it is not only uneconomical, but also for the compressor. The performance puts forward higher requirements. At this time, a two-stage compression cycle can be adopted, in order to reduce the compression ratio of a single compressor.
  • the examples given below are all described by taking two-stage compression as an example.
  • the compressor comprises a primary compressor 2 and a secondary compressor 3, and an intermediate cooler 11 is provided between the primary compressor 2 and the secondary compressor 3, and the primary compressor 2
  • the water vapor discharged from the exhaust end is cooled by the intercooler 11 and sucked by the suction end of the secondary compressor 3; a second circulation passage is provided between the condenser 6 and the intercooler 11, which can be directed by the condenser 6
  • the intercooler 11 supplies refrigerant water, and the circulating medium in the second circulation passage is driven to be circulated by the intercooler circulation pump 8.
  • the intercooler 11 reduces the superheat of the water vapor discharged from the primary compressor 2, and the water is uniformly distributed on the surface of the filling material of the intermediate cooler 11
  • the water vapor crosses the filling material, and the refrigerant water circulates through the filling material and is almost reduced to the saturation temperature.
  • the cooling can be achieved by partial evaporation of the refrigerant water flowing through the intercooler 11, and the evaporated refrigerant water is continuously replenished by the refrigerant water circulation of the condenser 6.
  • the primary compressor 2 and the secondary compressor 3 may employ a centrifugal compressor, a scroll compressor, a screw compressor, or the like.
  • a compressor motor 4 can be used to coaxially drive the two compressors, which can make the interior of the air conditioning unit
  • the structure is more compact and reduces the size, thereby reducing costs.
  • the primary compressor 2 and the secondary compressor 3 are driven by the split shaft.
  • the primary compressor 2 is driven by a primary compressor motor 41
  • the secondary compressor 3 is driven by a secondary compressor motor 42.
  • the split-shaft drive mode is more flexible and can be achieved. Driving power.
  • the evaporator 5 is connected to the customer end 13 to enable the refrigerant water to absorb the heat of the chilled water of the user terminal 13 by heat exchange of internal indirect contact while evaporating, thereby obtaining a certain satisfaction.
  • the chilled water in the temperature range is supplied to the customer terminal 13 of the air conditioning unit.
  • the chilled water is equivalent to a transport means for transferring the cold amount from the air-conditioned room to the use room of the client terminal 13.
  • the condenser 6 is connected to the cooling tower 12, and the high-temperature steam can be transferred to the cooling water by the heat exchange method of the indirect internal contact, and is converted into the refrigerant water, and then passes through the first circulation passage and the second.
  • the circulation passage replenishes the refrigerant water to the evaporator 5 and the intercooler 11 to maintain the mass balance of the entire cycle.
  • the cooling tower 12 is an evaporative heat dissipating device, which uses cooling water to contact with air to perform cold and heat exchange to generate water vapor, which volatilizes heat to achieve evaporative heat dissipation, convective heat transfer and radiation heat transfer, thereby dispersing Go to the residual heat generated in the air conditioning unit Low water temperature to ensure the normal operation of the system.
  • the cooling water is equivalent to a tool that sends the heat generated by the air conditioning unit to the outside.
  • an evaporator cycle working valve 10 and an intercooler circulation working valve 9 are respectively disposed in the first circulation passage and the second circulation passage, which can depressurize the refrigerant water to the evaporation pressure and the evaporation temperature, according to The change in the cooling load regulates the flow rate of the refrigerant water supplied to the evaporator 5 and the intercooler 11, so that the air conditioning unit satisfies different degrees of cooling requirements.
  • the evaporator circulation pump 7 drives the refrigerant water to circulate in the evaporator 5, and the refrigerant water evaporates and absorbs the heat of the chilled water through the heat exchange method of internal indirect contact, so that the user terminal 13 reaches the cooling effect.
  • the low-temperature, low-pressure water vapor generated by the evaporator 5 enters the primary compressor 2, is compressed into medium-pressure, high-temperature steam, and then enters the intercooler 11.
  • the intercooler circulation pump 8 drives the refrigerant water to circulate in the intercooler 11, and the evaporation of the refrigerant water causes the temperature of the water vapor at the outlet of the primary compressor 2 to decrease.
  • the water vapor at the outlet of the intercooler 11 enters the secondary compressor 3, is compressed into high-pressure, high-temperature steam, and enters the condenser 6.
  • the primary compressor 2 and the secondary compressor 3 are coaxially driven by the compressor motor 4.
  • the water vapor at the outlet of the secondary compressor 3 transfers the heat of condensation to the cooling water by heat exchange means of internal indirect contact, whereby the water vapor is cooled to refrigerant water (also referred to as condensed water).
  • the refrigerant water generated by the condenser 6 passes through the intercooler circulation working valve 9 and the evaporator circulating working valve 10 to enter the intercooler 11 and the evaporator 5, respectively, supplementing the amount of evaporated water of the intercooler 11 and the evaporator 5, and completing The refrigerant water circulation of the entire system.
  • the evaporator 5 the circulating refrigerant water is directly evaporated and cooled in the evaporator 5, and for the condenser 6, it is a circulating refrigerant.
  • the water is heated in the condenser 6 by condensation of water vapor; the second is external heat exchange, and it is necessary to install an additional heat exchanger in the unit to cool the chilled water or the cooling water.
  • the evaporator 5 and the condenser 6 of the present invention are both internal.
  • Indirect contact heat exchange mode for the evaporator 5, the circulating refrigerant water is sprayed on the surface of the internal heat exchanger in the evaporator 5, and the chilled water is cooled while evaporating; for the condenser 6, the water vapor is internally changed The surface of the heater condenses while transferring heat to the cooling water.
  • the end difference of the evaporator 5 and the condenser 6 is small.
  • the circulating refrigerant water evaporates in the evaporator 5 while cooling the chilled water, and the end difference of the evaporator 5 is Te_chw_o-te, generally 1 to 2 °C.
  • Te_chw_o-te the end difference of the evaporator 5
  • the condenser 6 the water vapor is transferred to the cooling water while being condensed in the condenser 6, and the end difference of the condenser 6 is tc-tc_cw_o, which is generally 1 to 2 °C.
  • the present invention will also be described with respect to its operation method.
  • the embodiment of the operation method is also given with water as a refrigerant.
  • the refrigerant water in the following embodiment is a liquid circulation working medium, water vapor. It is a gaseous circulating working fluid.
  • this method of operation is also applicable to the case of using other refrigerants, and will not be further elaborated here.
  • FIG. 4 is a schematic flow chart of an embodiment of an air conditioning unit operating method according to the present invention. After the unit is turned on, the operating method of the air conditioning unit includes the following steps:
  • Step 101 The evaporator 5 exchanges heat with the outside through a heat exchange method of internal indirect contact while evaporating the refrigerant water driven by the evaporator circulation pump 7;
  • Step 102 the compressor sucks the low-temperature steam generated by the evaporator 5 through the suction end, compresses the low-temperature steam, and then discharges the high-temperature steam through the exhaust end;
  • Step 103 The condenser 6 converts the high temperature water vapor into a refrigerant water by a heat exchange method of internal indirect contact;
  • Step 104 The condenser 6 replenishes the refrigerant water to the evaporator 5 through the first circulation passage of the air conditioning unit.
  • FIG. 5 is a schematic flow chart of another embodiment of an operation method of an air conditioning unit according to the present invention.
  • the compressor includes a primary compressor 2 and a secondary compressor 3, and compresses low temperature water vapor. Specifically include:
  • Step 201 the primary compressor 2 performs first-stage compression on the low-temperature steam
  • Step 202 the intercooler 11 cools the first-stage compressed water vapor through the intercooler circulation pump 8 to drive the circulating refrigerant water, and the condenser 6 supplies the intermediate cooler 11 through the second circulation passage of the air conditioning unit.
  • Agent water
  • Step 203 the secondary compressor 3 performs secondary compression on the cooled water vapor.
  • the operation method of the air conditioning unit refer to the description of the air conditioning unit.
  • the beneficial technical effects produced by each execution step are corresponding to the descriptions of the air conditioning unit mentioned above, and similar parts will not be described herein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne un climatiseur et son procédé de fonctionnement. Le climatiseur comprend un évaporateur (5), un compresseur et un condenseur (6) situés dans une enceinte commune entièrement fermée (1). Un premier canal de circulation par lequel le condenseur (6) fournit un milieu de travail de circulation liquide à l'évaporateur (5) est en outre prévu au niveau du côté externe de l'enceinte (1) et l'évaporateur (5) peut échanger de la chaleur avec le côté extérieur suivant un échange de chaleur à contact indirect en interne lors de l'évaporation du milieu de travail de circulation liquide entraîné par un pompe de circulation (7) d'évaporateur; le compresseur peut aspirer un milieu de travail de circulation gazeux à basse température produit par l'évaporateur (5) par une extrémité d'aspiration de gaz, il comprime ensuite le milieu de travail de circulation gazeux à basse température et ensuite il refoule un milieu de travail de circulation gazeux à haute température par une extrémité de refoulement; et le condenseur (6) peut transformer le milieu de travail de circulation gazeux à haute température en milieu de travail de circulation liquide suivant un échange de chaleur à contact indirect en interne.
PCT/CN2015/078530 2014-10-16 2015-05-08 Climatiseur et son procédé de fonctionnement WO2016058365A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410550516.3A CN104235988B (zh) 2014-10-16 2014-10-16 采用水作为制冷剂的离心式空调机组及运行方法
CN201410550516.3 2014-10-16

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CN109442776A (zh) * 2018-11-30 2019-03-08 中国科学院广州能源研究所 一种水制冷剂空调设备
CN109975052A (zh) * 2019-04-12 2019-07-05 河北磐睿能源科技有限公司 一种无冷负荷状态的空调制冷性能测试系统及方法
CN110220321A (zh) * 2019-06-19 2019-09-10 信易电热机械有限公司 一种间接制冷的冰水机
CN112169364A (zh) * 2020-09-29 2021-01-05 江苏博颂化工科技有限公司 一种采用外部循环工质的分馏塔热泵系统
CN113339912A (zh) * 2021-06-17 2021-09-03 中国华能集团清洁能源技术研究院有限公司 一种低温工质区域供冷系统和方法
CN113819548A (zh) * 2021-10-28 2021-12-21 福建省建筑设计研究院有限公司 一种冷冻水热回收空调系统及其使用方法
CN115988839A (zh) * 2022-12-28 2023-04-18 山东省信息产业服务有限公司 一种通讯机房空调机组及机房内空气循环方法

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CN104235988B (zh) * 2014-10-16 2017-02-01 珠海格力电器股份有限公司 采用水作为制冷剂的离心式空调机组及运行方法
CN107036319B (zh) * 2016-02-04 2020-10-02 松下知识产权经营株式会社 制冷循环装置
DE102017006206A1 (de) * 2017-06-30 2019-01-03 Ralf Steffens Verdrängerverdichtersystem für R-718
CN107957138A (zh) * 2017-10-17 2018-04-24 上海交通大学 采用自然工质水的高温热泵循环系统及其工作方法
CN109297120B (zh) * 2018-09-27 2020-09-08 江苏三木化工股份有限公司 一种工业用冷水制冷系统及工作方法
CN117190341A (zh) * 2022-05-31 2023-12-08 芜湖美智空调设备有限公司 一种空气处理系统、空调及其控制方法

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