CN105674613A - Evaporation enthalpy reducing system of carbon dioxide air source heat pump - Google Patents

Evaporation enthalpy reducing system of carbon dioxide air source heat pump Download PDF

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Publication number
CN105674613A
CN105674613A CN201610204361.7A CN201610204361A CN105674613A CN 105674613 A CN105674613 A CN 105674613A CN 201610204361 A CN201610204361 A CN 201610204361A CN 105674613 A CN105674613 A CN 105674613A
Authority
CN
China
Prior art keywords
carbon dioxide
evaporation
air source
heat pump
source heat
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
CN201610204361.7A
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Chinese (zh)
Inventor
王晓磊
康喆
徐博睿
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.)
Tianjin Zhongshi Ruizhe Technology Co Ltd
Original Assignee
Tianjin Zhongshi Ruizhe Technology Co 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 Tianjin Zhongshi Ruizhe Technology Co Ltd filed Critical Tianjin Zhongshi Ruizhe Technology Co Ltd
Priority to CN201610204361.7A priority Critical patent/CN105674613A/en
Publication of CN105674613A publication Critical patent/CN105674613A/en
Pending 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/09—Improving heat transfers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

An evaporation enthalpy reducing system of a carbon dioxide air source heat pump comprises a water tank, an evaporation sprayer set and a water pump, all of which are sequentially and circularly connected through a pipeline. The evaporation sprayer set is arranged above an air cooler in a carbon dioxide air source heat pump unit used for conducting cooling through fog water sprayed by the evaporation sprayer set. According to the evaporation enthalpy reducing system of the carbon dioxide air source heat pump, the water evaporation and heat absorption principle and the characteristic of the high exhaust temperature of the transcritical carbon dioxide air source heat pump are utilized, the evaporation enthalpy reducing system is additionally arranged on the outer side of the heat pump air cooler, the heat of carbon dioxide in an air cooling heat exchanger of the carbon dioxide air source heat pump is absorbed during refrigeration in summer, the temperature of carbon dioxide before the carbon dioxide enters an expansion valve is reduced, the enthalpy value of a working medium is reduced, losses brought by expansion are reduced, and accordingly the integral efficiency of the system is greatly improved. Meanwhile, the heat exchange efficiency of the air cooler is improved, the heat exchange area of the air cooler is reduced, the equipment size is reduced, and the equipment cost is saved.

Description

A kind of carbon dioxide air source heat pump evaporation is sent out and is dropped enthalpy system
Technical field
The present invention relates to a kind of carbon dioxide air source heat pump. Particularly relate to a kind of carbon dioxide air source heat pump evaporation send out and drop enthalpy system.
Background technology
CO 2 cross-critical heat pump techniques, main by Trans-critical cycle compressor, expansion valve, air cooler, vaporizer forms, in Trans-critical cycle system, low-pressure section, the pressure of inspiration(Pi) of compressor is lower than critical pressure, and evaporating temperature is also below critical temperature, the endothermic process of circulation still carries out under undercritical conditions, and heat transfer process mainly relies on latent heat to complete. But the pressure at expulsion of compressor is higher than critical pressure, and at supercritical range, it does not have phase transformation, pressure and temperature is each independent parameter, overcomes the restriction that subcritical cycle is affected by environment. So, CO2 Trans-critical cycle kind of refrigeration cycle has an advantage of continuously adjustable cold within the specific limits, affected by environment not quite. This technology is mainly used in indoor heating refrigerating field.
CO 2 cross-critical air source heat pump, mainly by Trans-critical cycle compressor, expansion valve, water cooler, air cooler forms, and is a kind of air source heat pump utilizing CO 2 trans-critical heat pump technology.
CO 2 cross-critical air source heat pump is when summer operation, air cooler is as condenser, import is connected with exhaust outlet of compressor, exhaust outlet of compressor temperature higher (100-150 DEG C), when carrying out heat exchange with air, owing to air themperature in summer is of a relatively high, need bigger heat exchange area, simultaneously, air cooler outlet connects expansion valve, according to actual measurement situation, expansion valve inlet temperature is more low, system effectiveness is more high, when expansion valve inlet temperature is lower than 35 DEG C, system effectiveness can reach 4., 2-4.5, therefore Temperature of Working before reduction expansion valve, reduce air cooler outlet enthalpy and can be greatly improved system effectiveness.
Summary of the invention
The technical problem to be solved is to provide a kind of simple in construction, reliable drops enthalpy system, it is possible to before reducing expansion valve, the carbon dioxide air source heat pump evaporation of working medium enthalpy is sent out and dropped enthalpy system.
The technical solution adopted in the present invention is: enthalpy system drops in a kind of evaporation for air source carbon dioxide heat-pump, include the water tank, evaporation jet head sets and the water pump that are circulated connection by pipeline successively, wherein, described evaporation jet head sets is arranged on the fog sprayed for passing through evaporation jet head sets and carries out the top of the air cooler in the carbon dioxide air source source pump lowered the temperature.
The water inlet of described water tank connects the drain pipe of indoor set condensed water.
The described pipeline between evaporation jet head sets and water tank is provided with the adjustment valve for the discharge and pressure regulating the condensed water flowing to evaporation jet head sets.
A kind of carbon dioxide air source heat pump evaporation of the present invention is sent out and is dropped enthalpy system, utilize water evaporation endothermic principle and the higher feature of critical-cross carbon dioxide air source heat pump delivery temperature, outside heat pump air cooler, set up evaporation drop enthalpy system, carbon dioxide temperature in the heat pump air cooling heat exchanger of carbon dioxide air source during absorption cooling in summer, reduce the temperature before carbon dioxide enters expansion valve, reduce working medium enthalpy, reduce and expand the loss brought, thus being greatly improved system whole efficiency. Meanwhile, enhance air cooler heat exchange efficiency, reduce air cooler heat exchange area, save equipment size, save equipment cost.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the present invention.
In figure
1: carbon dioxide air source source pump 2: water tank
3: water pump 4: evaporation jet head sets
5: regulate valve
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing a kind of carbon dioxide air source heat pump evaporation of the present invention sent out and drop enthalpy system and be described in detail.
As shown in Figure 1, a kind of carbon dioxide air source heat pump evaporation of the present invention is sent out and is dropped enthalpy system, include the water tank 2, evaporation jet head sets 4 and the water pump 3 that are circulated connection by pipeline successively, wherein, described evaporation jet head sets 4 is arranged on the fog sprayed for passing through evaporation jet head sets 4 and carries out the top of the air cooler 6 in the carbon dioxide air source source pump 1 lowered the temperature, and the water inlet of described water tank 2 connects the drain pipe of indoor set condensed water. Pipeline between described evaporation jet head sets 4 and water tank 2 is additionally provided with the adjustment valve 5 for the discharge and pressure regulating the condensed water flowing to evaporation jet head sets 4.
Enthalpy system drops in a kind of evaporation for air source carbon dioxide heat-pump of the present invention, during installation, first determines the quantity of all parts, size according to the heat exchange scale of carbon dioxide air source source pump 1; Then water tank 2, water pump 5 are fixed, by the top of the air cooler 6 that evaporation jet head sets 4 is installed in carbon dioxide air source source pump 1, connect water pump 3, evaporation jet head sets 4, water tank 2 and regulate valve 5, thus constituting complete carbon dioxide air source heat pump evaporation and send out and drop enthalpy system.
Enthalpy System Working Principle drops in a kind of evaporation for air source carbon dioxide heat-pump of the present invention, during summer operation, can indoor condensed water be caused in water tank 2, water in water tank 2 is delivered to evaporation jet head sets 4 by water pump 3, water is due to evaporation jet head sets 4 decompressing effect, atomization, on spray attachment air cooler 6 in carbon dioxide air source source pump 1, due to summer operation carbon dioxide delivery temperature significantly high (100-150 DEG C), water loading evaporates rapidly on air cooler 6, absorb carbon dioxide heat in air cooler 6, so that the expansion valve inlet temperature in carbon dioxide air source source pump 1 reduces, improve system effectiveness, when expansion valve inlet temperature is lower than 35 DEG C, system effectiveness can reach 4.2～4.5, therefore the work efficiency of carbon dioxide air source source pump 1 it is greatly improved.
A kind of evaporation for air source carbon dioxide heat-pump of the present invention is dropped in enthalpy system, unspent water by Pipeline transport recovery tank 2, the present invention by regulate valve 5 can regulating water flow and pressure, thus reaching to regulate the purpose of the fogging degree of water.

Claims (3)

1. a carbon dioxide air source heat pump evaporation is sent out and is dropped enthalpy system, it is characterized in that, include the water tank (2), evaporation jet head sets (4) and the water pump (3) that are circulated connection by pipeline successively, wherein, described evaporation jet head sets (4) is arranged on the fog sprayed for passing through evaporation jet head sets (4) and carries out the top of the air cooler (6) in carbon dioxide air source source pump (1) lowered the temperature.
2. a kind of carbon dioxide air source heat pump evaporation according to claim 1 is sent out and is dropped enthalpy system, it is characterised in that the water inlet of described water tank (2) connects the drain pipe of indoor set condensed water.
3. a kind of carbon dioxide air source heat pump evaporation according to claim 1 is sent out and is dropped enthalpy system, it is characterized in that, the pipeline between described evaporation jet head sets (4) and water tank (2) is provided with the adjustment valve (5) for the discharge and pressure regulating the condensed water flowing to evaporation jet head sets (4).
CN201610204361.7A 2016-03-31 2016-03-31 Evaporation enthalpy reducing system of carbon dioxide air source heat pump Pending CN105674613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610204361.7A CN105674613A (en) 2016-03-31 2016-03-31 Evaporation enthalpy reducing system of carbon dioxide air source heat pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610204361.7A CN105674613A (en) 2016-03-31 2016-03-31 Evaporation enthalpy reducing system of carbon dioxide air source heat pump

Publications (1)

Publication Number Publication Date
CN105674613A true CN105674613A (en) 2016-06-15

Family

ID=56225781

Family Applications (1)

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CN201610204361.7A Pending CN105674613A (en) 2016-03-31 2016-03-31 Evaporation enthalpy reducing system of carbon dioxide air source heat pump

Country Status (1)

Country Link
CN (1) CN105674613A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10325587A (en) * 1997-05-27 1998-12-08 O K Kizai Kk Auxiliary cooling device of air cooled condenser for air conditioner
CN2351718Y (en) * 1998-09-30 1999-12-01 浙江上风实业股份有限公司 Evaporative condenser
CN101142453A (en) * 2005-03-18 2008-03-12 开利商业冷藏公司 Condensate heat transfer for transcritical carbon dioxide refrigeration system
CN201621892U (en) * 2010-03-31 2010-11-03 东莞市泰格冷热设备有限公司 Water-cooled highly-efficient CO2 refrigerating unit
CN104807227A (en) * 2015-05-15 2015-07-29 上海海洋大学 Experiment system of evaporative condenser
CN105258406A (en) * 2015-10-27 2016-01-20 谢光礼 Condenser system for air conditioner
CN205655516U (en) * 2016-03-31 2016-10-19 天津众石睿哲科技有限责任公司 Enthalpy system falls in carbon dioxide air source heat pump evaporation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10325587A (en) * 1997-05-27 1998-12-08 O K Kizai Kk Auxiliary cooling device of air cooled condenser for air conditioner
CN2351718Y (en) * 1998-09-30 1999-12-01 浙江上风实业股份有限公司 Evaporative condenser
CN101142453A (en) * 2005-03-18 2008-03-12 开利商业冷藏公司 Condensate heat transfer for transcritical carbon dioxide refrigeration system
CN201621892U (en) * 2010-03-31 2010-11-03 东莞市泰格冷热设备有限公司 Water-cooled highly-efficient CO2 refrigerating unit
CN104807227A (en) * 2015-05-15 2015-07-29 上海海洋大学 Experiment system of evaporative condenser
CN105258406A (en) * 2015-10-27 2016-01-20 谢光礼 Condenser system for air conditioner
CN205655516U (en) * 2016-03-31 2016-10-19 天津众石睿哲科技有限责任公司 Enthalpy system falls in carbon dioxide air source heat pump evaporation

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Application publication date: 20160615