CN108800664A - A kind of efficient freezer based on ground source technology and dry library hybrid system - Google Patents
A kind of efficient freezer based on ground source technology and dry library hybrid system Download PDFInfo
- Publication number
- CN108800664A CN108800664A CN201710284955.8A CN201710284955A CN108800664A CN 108800664 A CN108800664 A CN 108800664A CN 201710284955 A CN201710284955 A CN 201710284955A CN 108800664 A CN108800664 A CN 108800664A
- Authority
- CN
- China
- Prior art keywords
- heat
- dry
- valve
- library
- ground source
- 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
Links
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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- 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
- F25B2500/18—Optimization, e.g. high integration of refrigeration components
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of efficient freezers based on ground source technology and dry library hybrid system, including cold storage refrigerating system, dry library heat pump system and ground source heat-exchange system；Wherein, the first condenser (4) of the cold storage refrigerating system and the second evaporator (9) of the dry library heat pump system are connected in series in the heat-exchange system of described ground source.Cold storage refrigerating system condenser is connected with dry library heat pump system evaporator by ground source heat-exchange system, this makes freezer condenser heat exhaust and dry library evaporator release cold and be transferred to together in ground source soil or water, it part heat exhaust and releases cold and cancels out each other, ground source heat-exchange system load can be reduced, the extraction amount of the unbalance Probability of soil source heat or water source side medium water is reduced while realizing the purpose for improving cold storage refrigerating system trapped energy theory and dry library heat pump system performance coefficient COP.
Description
Technical field
It is specifically a kind of real based on a set of ground source heat-exchange system the present invention relates to the hybrid system of a kind of freezer and dry library
It is now the running equipment that freezer and dry library provide low-temperature receiver and heat source simultaneously, belongs to refrigeration and technical field of heat pumps.
Background technology
In modern society, the progress with science and technology with the development of economy, more and more freezers and dry library are extensive
For in the fields such as food, medical treatment, chemical industry.Freezer and the energy consumption for drying library are generally higher, therefore, reduce freezer and dry library
Operation energy consumption is most important.
In the prior art, most freezers and dry library use air source heat pump technology.Under unfavorable operating mode, such as freezer
Corresponding high temperature summer, higher outdoor temperature correspond to higher condensation temperature, this will greatly improve refrigeration cycle compressor
Wasted work amount, to reduce unit operation EER；For the low temperature winter corresponding to dry library, lower outdoor temperature corresponds to relatively low
Evaporating temperature, can equally improve heat pump cycle compressor wasted work amount, lead to lower unit operation COP.
Compared to air source heat pump, earth source heat pump can use reproducible shallow layer geothermal energy, and annual moderate temperature is steady
Fixed underground or underground water is as the low-temperature receiver side of refrigeration system or the heat source side of heat pump system so that refrigeration system has phase
There is relatively high evaporating temperature to lower condensation temperature, heat pump system, to which freezer operation EER and dry library can be improved
COP is run, there are the advantages such as energy conservation and environmental protection.However in the prior art, ground source heat pump technology is applied to Heating,Ventilating and Air Conditioning mostly
Field rarely has implementation in terms of freezer and dry library, more combines without a set of freezer based on ground source heat-exchange system and dry library
Using.
In general, two class of soil source technology or underground water source technology can be used in earth source heat pump.For soil source technology,
In equipment running process, refrigeration storage system is discharged into heat into soil throughout the year, easily causes Soil Thermal unbalance so that the soil moisture
Persistently rise year by year, freezer condensation temperature can be increased in this way, year by year reduce operation EER, for freezer Effec-tive Function extremely not
Profit；The released cold quantity into soil can be continued for dry library heat pump system so that the soil moisture continues to decline year by year, reduces drying
Library evaporating temperature and operation COP, are equally unfavorable for the Effec-tive Function in dry library.For underground water source technology, more heat
Amount or cold are required to a large amount of underground water progress heat and change, it is therefore desirable to extract a large amount of underground water, be unfavorable for the protection of water resource.
Invention content
For the above-mentioned prior art, the present invention provide a kind of efficient freezer based on ground source technology with
Freezer low-temperature receiver side and dry library heat source side are cascaded by dry library hybrid system, and cold is released in freezer heat exhaust and dry library
It can be offset to a certain extent, to reduce ground source heat-exchange system cold heat load, it is several to reduce the unbalance generation of Soil Thermal
Rate and groundwater mining amount have environmental protection and energy saving.
The present invention is achieved through the following technical solutions above-mentioned purpose：It is a kind of based on the efficient freezer of ground source technology and drying
Library hybrid system, it is characterised in that：Including cold storage refrigerating system, dry library heat pump system and ground source heat-exchange system；
The cold storage refrigerating system include freezer the library and match and be sequentially connected in series with the freezer the library
One evaporator, the first compressor, the first condenser and first throttle valve；
The dry library heat pump system includes dry Kuku body and matches with the dry Kuku body and the company of being sequentially connected in series
The second condenser, the second compressor, the second evaporator and the second throttle connect；
Wherein, the second evaporator series of the first condenser of the cold storage refrigerating system and the dry library heat pump system
It is connected in the heat-exchange system of described ground source.
Further, described ground source heat-exchange system includes two soil source enclosed heat exchange subsystems in parallel and the heat exchange of water source open type
Subsystem.
Further, the soil source enclosed heat exchange subsystem includes the first flow being sequentially connected in series with first condenser
Regulating valve, variable frequency pump, the second two-port valve, underground pipe, third two-port valve, the second evaporator and second flow regulating valve；
Wherein, the first flow regulating valve and the first condenser are in parallel with the first by-passing valve by pipeline, and described second
Flow control valve and the second evaporator are in parallel with the second by-passing valve by pipeline.
Further, water source open type heat exchange subsystem include the first two-port valve being sequentially connected in series, it is variable frequency pump, first-class
Adjustable valve, the first condenser, second flow regulating valve, the second evaporator, the 4th two-port valve；
Wherein, the first flow regulating valve and the first condenser are in parallel with the first by-passing valve by pipeline, and described second
Flow control valve and the second evaporator are in parallel with the second by-passing valve by pipeline.
Further, the pipe head being connect with first two-port valve stretches in water intake well；With the 4th two-port valve
Another end of pipeline of connection stretches in inverted well.
The beneficial effects of the invention are as follows：The hybrid system shares cold storage refrigerating system and dry library heat pump system a set of
Source heat-exchange system can be greatly decreased the preliminary investment of ground source heat-exchange system, increase the technological competitiveness of the hybrid system；Ground source
Heat-exchange system includes soil source enclosed heat exchange subsystem and water source open type heat exchange subsystem, and two kinds of operational mode parallel connections can basis
Differently source situation selects soil source or water source, dilation technique application range.
Cold storage refrigerating system and dry library heat pump system in the hybrid system are based on first flow regulating valve, second flow
The standard-sized sheet of regulating valve, the first by-passing valve and the second by-passing valve with it is fully closed, their independent operatings can be made, not by other side's start and stop limit
System；Whether ground source heat, which changes, uses variable frequency pump in system, can simultaneously be opened according to cold storage refrigerating system and dry library heat pump system
And load condition adjusts heat exchange water flow；First flow regulating valve, second flow regulating valve, the first by-passing valve and the second by-passing valve
Aperture can flow through the first condenser and the second evaporation according to cold storage refrigerating system and dry library heat pump system load condition adjusting
The water flow of device, to improve the control accuracy of cold storage refrigerating system and dry library heat pump system；When freezer and dry library simultaneously
When operation, since cold storage refrigerating system condenser is connected with dry library heat pump system evaporator by ground source heat-exchange system, this makes
Freezer condenser heat exhaust and dry library evaporator are released cold and are transferred to together in ground source soil or water, part heat exhaust and
It releases cold to cancel out each other, ground source heat-exchange system load can be reduced, reduce the unbalance Probability of soil source heat or water source side Jie
The extraction amount of matter water while the mesh for realizing raising cold storage refrigerating system trapped energy theory and dry library heat pump system performance coefficient COP
's.This system can realize freezer and the energy-efficient reliability service in dry library on the basis of Low investment.
Description of the drawings
Fig. 1 is overall structure of the present invention；
In figure：1, freezer the library, the 2, first evaporator, the 3, first compressor, the 4, first condenser, 5, first throttle valve,
6, dry Kuku body, the 7, second condenser, 8, second throttle, the 9, second evaporator, the 10, second compressor, 11, first flow
Regulating valve, 12, variable frequency pump, the 13, first by-passing valve, the 14, first two-port valve, the 15, second two-port valve, 16, water intake well, 17,
Two flow control valves, the 18, second by-passing valve, 19, third two-port valve, the 20, the 4th two-port valve, 21, underground pipe, 22, inverted well.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of efficient freezer based on ground source technology and dry library hybrid system, including freezer refrigerating system
System, dry library heat pump system (the drying library belongs to high temperature drying and related scope, is not related to low temperature and air drying technology) and
Ground source heat-exchange system.
The cold storage refrigerating system include freezer the library 1 and match with freezer the library 1 and gone here and there successively by pipeline
Join the first evaporator 2, the first compressor 3, the first condenser 4 and the first throttle valve 5 of connection.Wherein, first evaporator
2, the closed loop that is connected in series to form of the first compressor 3, the first condenser 4 and first throttle valve 5 connects.
The dry library heat pump system include dry Kuku body 6 and match with the dry Kuku body 6 and pass through
The second condenser 7, the second compressor 10, the second evaporator 9 and the second throttle 8 that pipeline is sequentially connected in series.Wherein, described
Second condenser 7, the second compressor 10, the second evaporator 9 and second throttle 8 the closed loop that is connected in series to form connect
It connects.
Described ground source heat-exchange system includes two soil source enclosed heat exchange subsystems in parallel and water source open type heat exchange subsystem.
Wherein, the soil source enclosed heat exchange subsystem includes being sequentially connected in series by pipeline and first condenser 4
First flow regulating valve 11, variable frequency pump 12, the second two-port valve 15, underground pipe 21, third two-port valve 19,9 and of the second evaporator
Second flow regulating valve 17；In addition, wherein 11 and first condenser 4 of the first flow regulating valve by pipeline and first by
Port valve 13 is in parallel, and 17 and second evaporator 9 of the second flow regulating valve is in parallel with the second by-passing valve 18 by pipeline.
Water source open type heat exchange subsystem include the first two-port valve 14 being sequentially connected in series by pipeline, variable frequency pump 12,
First flow regulating valve 11, the first condenser 4, second flow regulating valve 17, the second evaporator 9, the 4th two-port valve 20；
Wherein, 11 and first condenser 4 of the first flow regulating valve is in parallel with the first by-passing valve 13 by pipeline, described
Second flow regulating valve 17 and the second evaporator 9 are in parallel with the second by-passing valve 18 by pipeline.
The pipe head being connect with first two-port valve 14 stretches in water intake well 16；Connect with the 4th two-port valve 20
Another end of pipeline connect stretches in inverted well 22.
9 company of series connection of the second evaporator of first condenser 4 of the cold storage refrigerating system and the dry library heat pump system
It is connected in the heat-exchange system of described ground source.
The course of work and principle：When 1 internal temperature of freezer the library rises, and unlatching compressor is needed to produce cold, freezer
High-temperature high-pressure gas refrigerant is discharged in the first condenser 4 under the action of the first compressor 3 and by heat transfer by the library 1
Into the soil or water of ground source heat-exchange system, while high-temperature high-pressure refrigerant is condensed into liquid, and subsequent liquid refrigerant is by the
The decompression throttling of one throttle valve 5, and complete low pressure evaporation gasification in the first evaporator 2, provide cold for freezer the library 1,
Refrigerant gas finally returns that the first compressor 3, forms cycle.
When dry 6 internal temperature of Kuku body reduces, and unlatching compressor is needed to produce heat, dry library is in the second compressor
High-temperature high-pressure gas refrigerant is discharged under the action of 10 and is condensed in second condenser 7 and transfers heat to dry Kuku body 6
It is interior, heat is provided for dry library, condensed liquid refrigerant is by the decompression throttling of second throttle 8, and in the second evaporator 9
It is middle to complete low pressure evaporation process and cold is transferred in the soil or water of ground source heat-exchange system, finally, the gaseous refrigerant of evaporation
Agent returns to the second compressor 10, forms cycle.
When freezer open operation and dry library it is out of service when, 18 standard-sized sheet of first flow regulating valve 11 and the second by-passing valve,
First by-passing valve 13 and second flow regulating valve 17 are fully closed；When drying library unlatching operation when freezer is out of service, the first bypass
17 standard-sized sheet of valve 13 and second flow regulating valve, first flow regulating valve 11 and the second by-passing valve 18 are fully closed；When freezer and dry library
When opening operation simultaneously, first flow regulating valve 11, the second by-passing valve 18, the first by-passing valve 13 and second flow regulating valve 17 are complete
Portion is in open state, while adjusting each valve opening according to freezer and dry library load condition.
Working-medium water in the heat-exchange system of ground source passes through the first two-port valve 14, the second two-port valve 15, third two-port valve 19 and
The switchover operation of soil source enclosed heat exchange subsystem and water source open type heat exchange subsystem is realized in the open and close of four two-port valves 20.
Next by taking freezer opens operation simultaneously with dry library as an example, explanatorily source heat-exchange system specific work process and principle.
It being changed in subsystem in soil source closed type hot, the second two-port valve 15 and third two-port valve 19 are open state, the one or two
Port valve 14 and the 4th two-port valve 20 are in off state, working-medium water by variable frequency pump 12 followed by first flow regulating valve 11,
First by-passing valve 13, the first condenser 4 (absorbing heat), second flow regulating valve 17, the second by-passing valve 18, the second evaporator 9
At (absorbing cold), third two-port valve 19, underground pipe 21 (cold or heat are reached soil) and the second two-port valve 15, formation follows
Ring.
In water source open type exchanges heat subsystem, the first two-port valve 14 and the 4th two-port valve 20 are open state, the second two-way
Valve 15 and third two-port valve 19 are in off state, and working-medium water extracts the water in water intake well 16 by variable frequency pump 12 and send successively
To first flow regulating valve 11 and the first by-passing valve 13, the first condenser 4 (absorbing heat), second flow regulating valve 17, second
By-passing valve 18, the second evaporator 9 (absorbing cold) drain into water in inverted well 22 eventually by the 4th two-port valve 20.
Compared to cold storage refrigerating system and dry library heat pump system independent operating, when cold storage refrigerating system and dry library heat pump
When system opens operation simultaneously, since the heat of the first condenser 4 can be not only discharged by underground pipe 21 or ground water regime, may be used also
It is offseted with the cold of releasing of the second evaporator 9；Therefore ground source heat-exchange system load can be reduced, reduce the unbalance hair of soil source heat
The extraction amount of life rate or water source side medium water, while can realize and improve cold storage refrigerating system trapped energy theory and dry library heat pump
The purpose of coefficient of performance COP improves energy utilization rate.
Embodiment provided above is the better embodiment of the present invention, only is used for facilitating illustrating the present invention, not to this hair
It is bright to make any form of restriction, any those of ordinary skill in the art, if not departing from the put forward skill of the present invention
In the range of art feature, the equivalent embodiment that part is changed or modified is made using disclosed technology contents, and
Without departing from the technical feature content of the present invention, in the range of still falling within the technology of the present invention feature.
Claims (5)
1. a kind of efficient freezer based on ground source technology and dry library hybrid system, it is characterised in that：Including cold storage refrigerating system,
Dry library heat pump system and ground source heat-exchange system；
The cold storage refrigerating system includes freezer the library (1) and matches and be sequentially connected in series with the freezer the library (1)
First evaporator (2), the first compressor (3), the first condenser (4) and first throttle valve (5)；
The dry library heat pump system includes dry Kuku body (6) and matches and be sequentially connected in series with the dry Kuku body (6)
The second condenser (7), the second compressor (10), the second evaporator (9) and the second throttle (8) of connection；
Wherein, the first condenser (4) of the cold storage refrigerating system and the second evaporator (9) of the dry library heat pump system are gone here and there
Connection is connected in the heat-exchange system of described ground source.
2. a kind of efficient freezer based on ground source technology according to claim 1 exists with dry library hybrid system, feature
In：Described ground source heat-exchange system includes two soil source enclosed heat exchange subsystems in parallel and water source open type heat exchange subsystem.
3. a kind of efficient freezer based on ground source technology according to claim 2 exists with dry library hybrid system, feature
In：The soil source enclosed heat exchange subsystem includes the first flow regulating valve being sequentially connected in series with first condenser (4)
(11), variable frequency pump (12), the second two-port valve (15), underground pipe (21), third two-port valve (19), the second evaporator (9) and
Two flow control valves (17)；
Wherein, the first flow regulating valve (11) and the first condenser (4) are in parallel with the first by-passing valve (13) by pipeline, institute
It states second flow regulating valve (17) and the second evaporator (9) is in parallel with the second by-passing valve (18) by pipeline.
4. a kind of efficient freezer based on ground source technology according to claim 2 exists with dry library hybrid system, feature
In：The water source open type heat exchange subsystem includes the first two-port valve (14), variable frequency pump (12), first flow tune being sequentially connected in series
Save valve (11), the first condenser (4), second flow regulating valve (17), the second evaporator (9), the 4th two-port valve (20)；
Wherein, the first flow regulating valve (11) and the first condenser (4) are in parallel with the first by-passing valve (13) by pipeline, institute
It states second flow regulating valve (17) and the second evaporator (9) is in parallel with the second by-passing valve (18) by pipeline.
5. a kind of efficient freezer based on ground source technology according to claim 4 exists with dry library hybrid system, feature
In：The pipe head being connect with first two-port valve (14) stretches in water intake well (16)；With the 4th two-port valve (20)
Another end of pipeline of connection stretches in inverted well (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284955.8A CN108800664A (en) | 2017-04-27 | 2017-04-27 | A kind of efficient freezer based on ground source technology and dry library hybrid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284955.8A CN108800664A (en) | 2017-04-27 | 2017-04-27 | A kind of efficient freezer based on ground source technology and dry library hybrid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108800664A true CN108800664A (en) | 2018-11-13 |
Family
ID=64069885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710284955.8A Pending CN108800664A (en) | 2017-04-27 | 2017-04-27 | A kind of efficient freezer based on ground source technology and dry library hybrid system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108800664A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021374A (en) * | 2007-03-23 | 2007-08-22 | 东南大学 | Water heating device of ground source heat pump |
| CN201021857Y (en) * | 2007-04-11 | 2008-02-13 | 张茂勇 | A dual effect ground source thermal pump three-purpose device |
| KR20100116293A (en) * | 2009-04-22 | 2010-11-01 | 한밭대학교 산학협력단 | Method for controlling ground source heat pump system for supplying hot water and heating space |
| CN203231534U (en) * | 2013-04-28 | 2013-10-09 | 深圳市桑霞太阳能有限公司 | Multimode heat pump hot water unit |
| WO2013151005A1 (en) * | 2012-04-04 | 2013-10-10 | 東芝キヤリア株式会社 | Composite dual refrigeration cycle device |
| CN103940151A (en) * | 2014-04-09 | 2014-07-23 | 中冶集团武汉勘察研究院有限公司 | Combined type ground source heat pump system and method for solving recharging of water source heat pump |
| CN204730522U (en) * | 2015-06-03 | 2015-10-28 | 浙江万合能源环境科技有限公司 | Hybrid ground source heat pump device |
| CN105865085A (en) * | 2016-03-28 | 2016-08-17 | 天津城建大学 | Coupled saline water layer forced convection well type ground-source heat pump system and operation method |
| CN206709446U (en) * | 2017-04-27 | 2017-12-05 | 华东交通大学 | A kind of efficient freezer based on ground source technology is with drying storehouse hybrid system |
-
2017
- 2017-04-27 CN CN201710284955.8A patent/CN108800664A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021374A (en) * | 2007-03-23 | 2007-08-22 | 东南大学 | Water heating device of ground source heat pump |
| CN201021857Y (en) * | 2007-04-11 | 2008-02-13 | 张茂勇 | A dual effect ground source thermal pump three-purpose device |
| KR20100116293A (en) * | 2009-04-22 | 2010-11-01 | 한밭대학교 산학협력단 | Method for controlling ground source heat pump system for supplying hot water and heating space |
| WO2013151005A1 (en) * | 2012-04-04 | 2013-10-10 | 東芝キヤリア株式会社 | Composite dual refrigeration cycle device |
| CN203231534U (en) * | 2013-04-28 | 2013-10-09 | 深圳市桑霞太阳能有限公司 | Multimode heat pump hot water unit |
| CN103940151A (en) * | 2014-04-09 | 2014-07-23 | 中冶集团武汉勘察研究院有限公司 | Combined type ground source heat pump system and method for solving recharging of water source heat pump |
| CN204730522U (en) * | 2015-06-03 | 2015-10-28 | 浙江万合能源环境科技有限公司 | Hybrid ground source heat pump device |
| CN105865085A (en) * | 2016-03-28 | 2016-08-17 | 天津城建大学 | Coupled saline water layer forced convection well type ground-source heat pump system and operation method |
| CN206709446U (en) * | 2017-04-27 | 2017-12-05 | 华东交通大学 | A kind of efficient freezer based on ground source technology is with drying storehouse hybrid system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2884061Y (en) | Warmmer air source heat-pump device of parallel compressor able to achieve tow-stage compression | |
| CN103486754B (en) | A kind of energy-conservation middle temperature cold-producing medium/middle temperature cold-producing medium cascade refrigeration system | |
| CN108592452B (en) | A kind of CO2Air-conditioning heat pump removes defrosting system and its defrosting control method | |
| CN109556210B (en) | Control method of low-temperature triple heat supply pump system | |
| CN107763892B (en) | Defrosting air source heat pump system | |
| WO2017194035A1 (en) | Method for increasing refrigeration or heat pump system efficiency, and operating method | |
| CN103363717A (en) | Refrigerating system and operation method thereof | |
| CN107062934B (en) | Energy-saving vacuumizing cooling system and method | |
| CN206709446U (en) | A kind of efficient freezer based on ground source technology is with drying storehouse hybrid system | |
| CN110657610A (en) | Method for actively inhibiting frosting of air source heat pump and application system thereof | |
| CN113899105B (en) | Engine-driven air source heat pump | |
| CN105466075B (en) | Freeze in heat pump and hot water heating combined system and domestic hot-water's flow processed | |
| CN102563947A (en) | Heat pipe and heat pump combination type refrigerating plant | |
| CN210374156U (en) | Double-evaporation-temperature heat pump system and air conditioner | |
| CN219037133U (en) | Multi-evaporator parallel defrosting air source heat pump single heat engine unit | |
| CN111550943A (en) | Secondary throttling double-condensation refrigerating system, air conditioner and control method | |
| CN108759157B (en) | One-time throttling two-stage compression heat pump system | |
| CN108731295B (en) | Heat recovery gas air conditioning system | |
| WO2023010887A1 (en) | High-low temperature ambient test box refrigeration system and method capable of performing rewarming by using ambient heat | |
| CN106524503B (en) | Heat pump water heater | |
| CN108800664A (en) | A kind of efficient freezer based on ground source technology and dry library hybrid system | |
| CN212362485U (en) | Heat pump system with double suction and exhaust | |
| CN212457490U (en) | Secondary throttling double-condensation refrigerating system and air conditioner | |
| CN111550944B (en) | Triple throttling enthalpy-increasing double-condensation refrigerating system, air conditioner and control method | |
| CN208887145U (en) | Cascade type heat pump system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |