CN107024017A - A kind of multiple stacked carbon dioxide heat pump system of high inflow temperature - Google Patents
A kind of multiple stacked carbon dioxide heat pump system of high inflow temperature Download PDFInfo
- Publication number
- CN107024017A CN107024017A CN201710176681.0A CN201710176681A CN107024017A CN 107024017 A CN107024017 A CN 107024017A CN 201710176681 A CN201710176681 A CN 201710176681A CN 107024017 A CN107024017 A CN 107024017A
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- China
- Prior art keywords
- heat exchanger
- exchanger plates
- passage
- air side
- recooler
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- 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.)
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Classifications
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- 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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature, including CO2Compressor, R410A compressors, cooler, recooler, air side heat exchanger, first throttle part and the second throttle part, CO2The first passage in the first passage in first passage, recooler, first throttle part and air side heat exchanger in compressor, cooler connects and composes CO from beginning to end successively2Circulation loop；The second channel in second channel, the second throttle part, recooler in R410A compressors, air side heat exchanger connects and composes R410A circulation loops from beginning to end successively.This hair courage has the advantages that easy simple in construction, realization, system compact, equipment volume are small, can recycle cold waste heat again using the present invention, without additional low-temperature receiver, make CO2Heat pump inflow temperature lifting to more than 50 DEG C still can normal work, the use demand of heating system can be fully met.
Description
Technical field
The present invention relates to a kind of source pump, and in particular to a kind of multiple stacked dioxy of high inflow temperature available for heating
Change carbon heat pump.
Background technology
CO2It is the gas of colorless and odorless, its Tep=-56.6 DEG C of three-phase temperature spot, thirdly phase pressure point at normal temperatures and pressures
Ptp=0.518mPa, its critical temperature Tc=31.1 DEG C, its critical pressure Pc=7.38mPa.CO2Used as refrigerant, it is right
Environment is very friendly, the latent value ODP=0, greenhouse gases effect value GWP=1 of its ozone layer destroying.CO2Compared to traditional refrigerant,
And with following 5 big advantages：(1) there is good security and chemical stability；(2) refrigerating effect per unit swept volume is higher, refrigeration
Equipment size is smaller；(3) there is excellent flow behavior, its dynamic viscosity is relatively low, and the pressure drop of equipment is smaller；(4) have excellent
Heat-transfer character, its thermal conductivity factor is larger, and heat transfer effect is preferable；(5) its compression ratio is less than common refrigerant, compressor volume
Efficiency is higher.
At present, CO2It is mainly used in CO as refrigerant2In this kind equipment of Teat pump boiler.Such sets as shown in Figure 1
Standby schematic diagram, including CO2Compressor a, cooler b (water-side heat), throttle part c and evaporator d (air side heat exchanger),
Hot water end is connected by pipeline with cooler b.Because it can be readily available the hot water of higher temperature, thus in all kinds of hot water
Market has greater advantage.But such CO2Teat pump boiler can not be used as the thermal source of heating system, because of CO2Face
Boundary's temperature is relatively low (31.1 DEG C), and radiator heating is usual all more than 50 DEG C with water, even if taking supercooling technological means, its time
Coolant-temperature gage also more than 40 degree, is used as CO2The water inlet of heat pump can not meet operating temperature requirements.
Due to CO2Three phase point it is relatively low, thus relatively low evaporating temperature can be obtained, but to obtain low evaporating temperature, then must
Must be operated under subcritical state just has preferable economy.Therefore high-pressure, that is, reduction chilling temperature must be reduced.Pin
Needed to such a, there is scholar to propose with multiple stacked refrigeration to solve this problem.The existing multiple stacked CO as shown in attached 22Heat pump
The schematic diagram of system, including CO2Compressor a ', cooling-subcooler b ', throttle part c ', cryogenic vaporizer d ', NH3Compressor
E ', throttle part f ' and high-temperature evaporator g '.CO2Compressor a ', cooling-subcooler b ', throttle part c ' and cryogenic vaporizer
D ' connects and composes CO from beginning to end successively2Circulation loop, NH3Compressor, cooling-subcooler b ', throttle part f ' and high-temperature evaporator g '
Connect and compose NH from beginning to end successively3Circulation loop.Although the kind equipment has certain effect to reduction chilling temperature tool, it is fitted
Conjunction needs the occasion of low temperature, is not particularly suited for CO2Teat pump boiler, can not equally meet the use requirement of heating system.
The content of the invention
It is an object of the invention to provide a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature, it has structure letter
The small advantage of list, easy realization, system compact, equipment volume, can be recycled cold waste heat again using the present invention, and nothing
Low-temperature receiver need to be set up, makes CO2Heat pump inflow temperature lifting to more than 50 DEG C still can normal work, heating system can be fully met
The use demand of system.
To solve the above-mentioned problems in the prior art, the invention provides a kind of multiple stacked dioxy of high inflow temperature
Change carbon heat pump, including CO2Compressor, R410A compressors, cooler, recooler, air side heat exchanger, first throttle part
With the second throttle part, the CO2The first passage in first passage, recooler in compressor, cooler, first throttle portion
First passage in part and air side heat exchanger connects and composes CO from beginning to end successively2Circulation loop；The R410A compressors, wind side are changed
The second channel in second channel, the second throttle part, recooler in hot device connects and composes R410A and is recycled back to from beginning to end successively
Road.
Further, a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature of the present invention, the air side heat exchanger
Including the first heat exchanger plates, the second heat exchanger plates and the 3rd heat exchanger plates being arranged side by side, wherein, the first heat exchanger plates and the second heat exchanger plates point
Other places are in the outside and inner side of the 3rd heat exchanger plates；First passage in the air side heat exchanger is exchanged heat by the first heat exchanger plates and second
Plate concatenation is constituted, and the second channel in the air side heat exchanger is the passage in the 3rd heat exchanger plates.
Further, a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature of the present invention, the air side heat exchanger
Including the first heat exchanger plates, the second heat exchanger plates and the 3rd heat exchanger plates being arranged side by side, wherein, the 3rd heat exchanger plates are in the first heat exchanger plates
Outside, the second heat exchanger plates be in the first heat exchanger plates inner side；First passage in the air side heat exchanger is by the first heat exchanger plates
Concatenate and constitute with the second heat exchanger plates, the second channel in the air side heat exchanger is the passage in the 3rd heat exchanger plates.
A kind of multiple stacked carbon dioxide heat pump system of high inflow temperature of the present invention compared with prior art, with following excellent
Point：The present invention is by setting CO2Compressor, R410A compressors, cooler, recooler, air side heat exchanger, first throttle part
With the second throttle part, CO is allowed2The first passage in first passage, recooler, first throttle part in compressor, cooler
CO is connected and composed from beginning to end successively with the first passage in air side heat exchanger2Circulation loop；Allow R410A compressors, air side heat exchanger
In second channel, the second throttle part, the second channel in recooler connect and compose R410A circulation loops from beginning to end successively.By
This just constitute it is a kind of it is simple in construction, realize easily, the small multiple stacked carbon dioxide heat pump system of system compact, equipment volume.
In actual applications, allow hot water end to connect and compose hot water circulation loop by pipeline and cooler, pass through CO2Circulation loop exists
Heat exchange is carried out with hot water circulation loop, you can provide hot water use demand for hot water end at cooler.CO2Circulation loop exists
Heat exchange is carried out at recooler and with R410A circulation loops at air side heat exchanger, wherein, the first passage conduct in recooler
CO2Second channel in condenser in circulation loop, recooler is used as the evaporator in R410A circulation loops；And wind side is changed
First passage in hot device is used as CO2Second channel in evaporator in circulation loop, air side heat exchanger is circulated as R410A
Condenser in loop.This structure setting not only can be to CO at recooler2Refrigerant (CO in circulation loop2) had
Cooling down processing is imitated, operating temperature requirements are reached, and realizes again at air side heat exchanger the recovery profit of cold waste heat
With reducing the overall energy consumption of system.Meanwhile, can also improve the frosting situation of air side heat exchanger, be conducive to shorten the defrost time,
Defrost energy consumption is reduced, defrost effect is improved.The use demand of heating system can be fully met.
Shown embodiment is hot to a kind of multiple stacked carbon dioxide of high inflow temperature of the present invention below in conjunction with the accompanying drawings
Pumping system is described in further detail：
Brief description of the drawings
Fig. 1 is the structural representation of carbon dioxide heat pump system in the prior art；
Fig. 2 is the structural representation for answering stacked carbon dioxide heat pump system in the prior art；
Fig. 3 is a kind of structural representation of the multiple stacked carbon dioxide heat pump system of high inflow temperature of the present invention；
Fig. 4 is the first knot of evaporative condenser in a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature of the present invention
The schematic diagram of structure；
Fig. 5 is the first knot of evaporative condenser in a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature of the present invention
The schematic diagram of structure.
Embodiment
The specific implementation of the multiple stacked carbon dioxide heat pump system of a kind of high inflow temperature of the invention as shown in Figures 3 to 5
Mode, including CO2Compressor 1, R410A compressors 2, cooler 3, recooler 4, air side heat exchanger 5, the and of first throttle part 6
Second throttle part 7.Allow CO2Compressor 1, the first passage in cooler 3, the first passage in recooler 4, first throttle portion
First passage in part 6 and air side heat exchanger 5 connects and composes CO from beginning to end successively2Circulation loop.R410A compressors 2, wind side is allowed to change
The second channel in second channel, the second throttle part 7, recooler 4 in hot device 5 connects and composes R410A circulations from beginning to end successively
Loop.
Just constituted by arrangement above it is a kind of it is simple in construction, realize easily, the small multiple stacked of system compact, equipment volume
Carbon dioxide heat pump system.In actual applications, allow hot water end to connect and compose hot water circuit by pipeline and cooler 3 to return
Road, passes through CO2Circulation loop carries out heat exchange at cooler 3 with hot water circulation loop, you can provide hot water for hot water end
Use demand.CO2Circulation loop carries out heat exchange at recooler 4 and at air side heat exchanger 5 with R410A circulation loops, wherein,
First passage in recooler 4 is used as CO2Second channel in condenser in circulation loop, recooler 4 is circulated as R410A
Evaporator in loop；And the first passage in air side heat exchanger 5 is used as CO2Evaporator in circulation loop, air side heat exchanger 5
In second channel be used as the condenser in R410A circulation loops.This structure setting not only can be to CO at recooler 42Follow
Refrigerant (CO in loop back path2) effective temperature-reducing cooling treatment is carried out, operating temperature requirements are reached, and in the heat exchange of wind side
The recycling of cold waste heat is realized again at device 5, the overall energy consumption of system is reduced.Meanwhile, it can also improve air side heat exchanger 5
Frosting situation, is conducive to shortening defrost time, reduction defrost energy consumption, improves defrost effect.The present invention can fully meet heating system
The use requirement of system, it is cold by cooling of the R410A circulation loops at recooler 4 even if heating return water temperature is more than 50 DEG C
But handle, can easily make CO2Refrigerant (CO in circulation loop2) operating temperature requirements are reached, realize carbon dioxide
The technical purpose of the high inflow temperature of heat pump, its application of expansion, enhances practicality.It should be noted that R410A
Refrigerant in circulation loop is not limited to R410A, is only here the convenient description carried out of statement, it is also possible to use other identity properties
The refrigerant of matter.
As embodiment, the invention provides the air side heat exchanger 5 of two kinds of structure types.As shown in Figure 4 first
The air side heat exchanger 5 of structure is planted, it specifically includes the first heat exchanger plates 51 being arranged side by side, the second heat exchanger plates 52 and the 3rd heat exchanger plates
53, wherein, allow the first heat exchanger plates 51 and the second heat exchanger plates 52 to be respectively at the outside and inner side of the 3rd heat exchanger plates 53.First is allowed to change
First passage in the heat exchanger plates 52 of hot plate 51 and second concatenation composition air side heat exchanger 5, and the second channel in air side heat exchanger 5
It is made up of the passage in the 3rd heat exchanger plates 53.The air side heat exchanger 5 of this structure type can be such that the 3rd heat exchanger plates 53 are changed with first
The heat exchange of the heat exchanger plates 52 of hot plate 51 and second is more abundant, realizes again the maximization of cold heat recovery.
The air side heat exchanger 5 of second of structure as shown in Figure 5, it specifically includes the first heat exchanger plates 51 ' being arranged side by side,
Two heat exchanger plates 52 ' and the 3rd heat exchanger plates 53 ', wherein, allow the 3rd heat exchanger plates 53 ' to be in the outside of the first heat exchanger plates 51 ', allow second
Heat exchanger plates 52 ' are in the inner side of the first heat exchanger plates 51 '.Allow the first heat exchanger plates 51 ' and the second heat exchanger plates 52 ' to concatenate composition wind side to change
First passage in hot device 5, and the second channel in air side heat exchanger 5 is made up of the passage in the 3rd heat exchanger plates 53 '.This knot
The air side heat exchanger 5 of structure type is more beneficial for defrost processing, so as to ensure that on the basis of cold heat recovery again is realized
The stability and overall performance of system.
Above example is only the description carried out to the preferred embodiment for the present invention, and scope not is claimed to the present invention
The restriction of progress, on the premise of design spirit of the present invention is not departed from, technology of this area engineers and technicians according to the present invention
In the various forms of deformations that scheme is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (3)
1. the multiple stacked carbon dioxide heat pump system of a kind of high inflow temperature, it is characterised in that including CO2Compressor (1), R410A
Compressor (2), cooler (3), recooler (4), air side heat exchanger (5), first throttle part (6) and the second throttle part (7),
The CO2Compressor (1), the first passage in cooler (3), the first passage in recooler (4), first throttle part (6)
CO is connected and composed from beginning to end successively with the first passage in air side heat exchanger (5)2Circulation loop；The R410A compressors (2), wind
The second channel in second channel, the second throttle part (7), recooler (4) in side heat exchanger (5) is connected and composed from beginning to end successively
R410A circulation loops.
2. according to a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature described in claim 1, it is characterised in that institute
The first heat exchanger plates (51), the second heat exchanger plates (52) and the 3rd heat exchanger plates (53) that air side heat exchanger (5) includes being arranged side by side are stated, its
In, the first heat exchanger plates (51) and the second heat exchanger plates (52) are respectively at the outside and inner side of the 3rd heat exchanger plates (53)；The wind side
First passage in heat exchanger (5) is made up of the first heat exchanger plates (51) and the second heat exchanger plates (52) concatenation, the air side heat exchanger
(5) second channel in is the passage in the 3rd heat exchanger plates (53).
3. according to a kind of multiple stacked carbon dioxide heat pump system of high inflow temperature described in claim 1, it is characterised in that institute
State the first heat exchanger plates (51 '), the second heat exchanger plates (52 ') and the 3rd heat exchanger plates that air side heat exchanger (5) includes being arranged side by side
(53 '), wherein, the 3rd heat exchanger plates (53 ') are in the outside of the first heat exchanger plates (51 '), and the second heat exchanger plates (52 ') are changed in first
The inner side of hot plate (51 ')；First passage in the air side heat exchanger (5) is by the first heat exchanger plates (51 ') and the second heat exchanger plates
(52 ') concatenation is constituted, and the second channel in the air side heat exchanger (5) is the passage in the 3rd heat exchanger plates (53 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176681.0A CN107024017A (en) | 2017-03-23 | 2017-03-23 | A kind of multiple stacked carbon dioxide heat pump system of high inflow temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176681.0A CN107024017A (en) | 2017-03-23 | 2017-03-23 | A kind of multiple stacked carbon dioxide heat pump system of high inflow temperature |
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| Publication Number | Publication Date |
|---|---|
| CN107024017A true CN107024017A (en) | 2017-08-08 |
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| CN201710176681.0A Pending CN107024017A (en) | 2017-03-23 | 2017-03-23 | A kind of multiple stacked carbon dioxide heat pump system of high inflow temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189247A (en) * | 2020-01-07 | 2020-05-22 | 浙江英诺绿能科技有限公司 | Carbon dioxide subcritical refrigeration system and control method thereof |
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| CN105509125A (en) * | 2016-01-18 | 2016-04-20 | 西安交通大学 | Trans-critical CO2 heat pump heating system having quick defrosting function |
| CN205403249U (en) * | 2016-03-01 | 2016-07-27 | 田幼华 | Heat pump system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1983276A1 (en) * | 2007-04-19 | 2008-10-22 | Dresdner Kühlanlagenbau GmbH | Refrigeration system |
| CN102369397A (en) * | 2009-04-13 | 2012-03-07 | 松下电器产业株式会社 | Heat pump type heating device |
| CN201443869U (en) * | 2009-07-30 | 2010-04-28 | 山东美琳达再生能源开发有限公司 | double-loop evaporator |
| CN102597658A (en) * | 2009-10-27 | 2012-07-18 | 三菱电机株式会社 | Heat pump |
| CN204128237U (en) * | 2014-04-25 | 2015-01-28 | 甘肃一德新能源设备有限公司 | The cold and hot unit of a kind of CO2 overlapping enthalpy increasing heat pump |
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| CN111189247A (en) * | 2020-01-07 | 2020-05-22 | 浙江英诺绿能科技有限公司 | Carbon dioxide subcritical refrigeration system and control method thereof |
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Application publication date: 20170808 |