CN103615824A - Method and device for obtaining cooling capacities of multiple temperature zones based on expansion work recycling drive - Google Patents
Method and device for obtaining cooling capacities of multiple temperature zones based on expansion work recycling drive Download PDFInfo
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- CN103615824A CN103615824A CN201310658797.XA CN201310658797A CN103615824A CN 103615824 A CN103615824 A CN 103615824A CN 201310658797 A CN201310658797 A CN 201310658797A CN 103615824 A CN103615824 A CN 103615824A
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Abstract
The invention discloses a method and device for obtaining cooling capacities of multiple temperature zones based on expansion work recycling drive. The device comprises a steam compression high-temperature stage refrigerating cycle loop and a steam compression low-temperature stage refrigerating cycle loop, and the connecting components of the cycle loops comprise an expansion-compression device and an evaporative condenser. Steam compression high-temperature stage refrigerating cycle and steam compression low-temperature stage refrigerating cycle are operated in the device. In the high-temperature stage refrigerating cycle, refrigerating fluid evaporates and absorbs heat in a first evaporator to obtain the cooling capacities (above 0 DEG C), and the requirement for the heat comfort of a refrigeration chamber or a room is met. In the low-temperature stage refrigerating cycle, through the expansion work recycled by the expansion-compression device, the low-temperature stage refrigerating cycle is driven, the refrigerating fluid is condensed in the evaporative condenser, passes a throttling valve and enters a second evaporator to evaporate and absorb heat to obtain low temperature (below 0 DEG C), and the requirement for refrigeration is met. The method and device can achieve the aims of obtaining the cooling capacities of the two different temperature areas, reasonably utilizing the expansion work and improving the COP of a low-temperature refrigeration system.
Description
Technical field
The present invention relates to the new method that a kind of many warm areas cold obtains, is a kind of many warm areas cold acquisition methods and device driving that reclaim based on expansion work, the technical field that belongs to vapor compression refrigeration, expansion work recovery and rationally utilize.
Background technology
The increase day by day of air-conditioning system energy resource consumption has caused people's common concern, improves efficiency of energy utilization and becomes the task of top priority.Vapor compression refrigeration system, as the major way of air-conditioning system, carries out energy-saving design to it and seems particularly important.
There is multiple demand in many places for cold, and refrigeration requirement is larger, as supermarket, meat products factory etc., need to meet human body comfort, refrigeration and freezing demand, generally take respectively the refrigeration system of different warm areas to realize different demands, refrigeration system COP is low, has consumed a large amount of energy.For example, supermarket often takes respectively middle temp, refrigerating system and cryogenic refrigerating system to realize refrigeration and freezing, middle temp, refrigerating system evaporating temperature is between-15 ℃～5 ℃, cryogenic refrigerating system evaporating temperature is between-30 ℃～-40 ℃, because evaporating temperature is very low, the COP of middle gentle cryogenic refrigerating system is very low, is generally respectively 2 and 1.
Owing to having larger pressure drop before and after cold-producing medium throttling, a large amount of scholars are studied decompressor in recent years, and research shows that decompressor is particularly useful for large-scale refrigerating plant, cryogenic refrigeration systems etc.For some cold-producing mediums, reclaim expansion work and there is higher energy-saving potential, for example CO
2across critical cycle, although expansion ratio is very little, be generally 2～4, expansion work is larger, conventionally accounts for 25%～30% of compressor wasted work.
From above-mentioned analysis, the two has good complementarity, therefore, studies novel, efficient many warm areas cold acquisition methods tool and has very important significance.
Summary of the invention
Goal of the invention: for the problem and shortage of above-mentioned existing existence, the object of this invention is to provide a kind of many warm areas cold acquisition methods and device driving that reclaim based on expansion work.
Technical scheme: for achieving the above object, the present invention is by the following technical solutions: a kind of many warm areas cold acquisition device driving that reclaims based on expansion work, comprise steam compressed high temperature level refrigeration cycle and steam compressed low temperature level refrigeration cycle, wherein: described steam compressed high temperature level refrigeration cycle comprises the first evaporimeter, compressor, condenser, expansion-compressor and evaporative condenser, and the output of described the first evaporimeter is connected with the expander inlet of compressor, condenser, expansion-compressor successively; The decompressor outlet of described expansion-compressor is connected with the left side input of evaporative condenser, and the right side output of evaporative condenser and the input of the first evaporimeter are connected to form closed circuit; Described steam compressed low temperature level refrigeration cycle and steam compressed high temperature level refrigeration cycle share expansion-compressor and evaporative condenser, also comprise choke valve and the second evaporimeter, the compressor outlet of described expansion-compressor is connected with the downside input of evaporative condenser, the downside output of evaporative condenser is connected with the input of the second evaporimeter through choke valve, and the output of the second evaporimeter is connected with the compressor inlet of expansion-compressor.
A kind of method that realizes many warm areas of vapor compression refrigeration system cold based on said apparatus, in steam compressed high temperature level kind of refrigeration cycle, cold-producing medium expands after step-down in expansion-compressor, first passes through evaporative condenser, then enters the first evaporator evaporation heat absorption and obtain cold; In steam compressed low temperature level kind of refrigeration cycle, the expansion work compression and low pressure cold-producing medium that utilizes expansion-compressor to reclaim, the condensation in evaporative condenser of the cold-producing medium after pressurization, by choke valve reducing pressure by regulating flow, cold-producing medium evaporation endothermic in the second evaporimeter obtains low temperature; In steam compressed low temperature level kind of refrigeration cycle, the low-temperature low-pressure refrigerant condensation after the cold-producing medium after pressurization expands in steam compressed high temperature level kind of refrigeration cycle; In steam compressed high temperature level kind of refrigeration cycle, should adopt the larger cold-producing medium of expansion work under identical operating mode.
Beneficial effect: compared with prior art, the present invention has the following advantages: 1, the method can be obtained the cold of two kinds of different warm areas simultaneously, meets multiple demand; 2, this method is utilized the gaseous refrigerant after pressurization in the low-temperature low-pressure refrigerant condensation low temperature level kind of refrigeration cycle in steam compressed high temperature level kind of refrigeration cycle, low temperature level kind of refrigeration cycle condensation temperature is lower, and not affected by environment, effectively improve the COP of traditional steam compressed cryogenic refrigeration circulation; 3, this device utilizes the steam compressed low temperature level of expansion-driven compressor kind of refrigeration cycle, and without extra power consumption, cold-producing medium expands and can improve the refrigerating capacity in steam compressed high temperature level kind of refrigeration cycle simultaneously; 4, this method and device obtain many warm areas cold a kind of feasible method and scheme are provided for realizing, only need to by technology very ripe vapor compression refrigeration device transformed and upgrade and can realize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, the first evaporimeter 1, compressor 2, condenser 3, expansion-compressor 4, evaporative condenser 5, choke valve 6, the second evaporimeters 7.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the many warm areas cold acquisition device driving that reclaims based on expansion work of the present invention, comprises steam compressed high temperature level refrigeration cycle and steam compressed low temperature level refrigeration cycle; Steam compressed high temperature level refrigeration cycle comprises the first evaporimeter 1, compressor 2, condenser 3, expansion-compressor 4 and evaporative condenser 5, and the output of described the first evaporimeter 1 is connected with the expander inlet of expansion-compressor 4 with after condenser 3 by compressor 2 successively; The decompressor outlet of described expansion-compressor 4 is connected with the left side input of evaporative condenser 5, and the right side output of evaporative condenser 5 and the input of the first evaporimeter 1 are connected to form closed circuit; Steam compressed low temperature level refrigeration cycle and steam compressed high temperature level refrigeration cycle share expansion-compressor 4 and evaporative condenser 5, also comprise choke valve 6 and the second evaporimeter 7, the compressor outlet of expansion-compressor 4 is connected with the downside input of evaporative condenser 5, the downside output of evaporative condenser 5 is connected with the input of the second evaporimeter 7 through choke valve 6, and the output of the second evaporimeter 7 is connected with the compressor inlet of expansion-compressor 4.
In steam compressed high temperature level kind of refrigeration cycle, cold-producing medium expands after step-down in expansion-compressor 4, first pass through evaporative condenser 5 condensations from the gaseous refrigerant in low temperature level kind of refrigeration cycle, enter again the first evaporimeter 1 evaporation endothermic and obtain cold, the low-pressure gaseous refrigerant of the first evaporimeter 1 outlet is after compressor 2 pressurizations, enter condenser 3 and be condensed into high pressure liquid refrigerant, high pressure liquid refrigerant enters the step-down of expanding in expansion-compressor 4 and completes cyclic process; In steam compressed low temperature level kind of refrigeration cycle, the expansion work compression and low pressure cold-producing medium that utilizes expansion-compressor 4 to reclaim, the condensation in evaporative condenser 5 of cold-producing medium after pressurization, after choke valve 6 reducing pressure by regulating flows, cold-producing medium evaporation endothermic in the second evaporimeter 7 obtains low temperature.
In steam compressed low temperature level kind of refrigeration cycle, the low-temperature low-pressure refrigerant condensation after the gaseous refrigerant after pressurization expands in steam compressed high temperature level kind of refrigeration cycle; In steam compressed high temperature level kind of refrigeration cycle, should adopt the larger cold-producing medium of expansion work under identical operating mode.
Technical scheme of the present invention is transformed traditional Vapor Compression Refrigeration Cycle and is aided with Auxiliary Functioning Unit to realize.
Claims (3)
1. based on expansion work, reclaim the many warm areas cold acquisition device driving, it is characterized in that: comprise steam compressed high temperature level refrigeration cycle and steam compressed low temperature level refrigeration cycle, wherein:
Described steam compressed high temperature level refrigeration cycle comprises the first evaporimeter, compressor, condenser, expansion-compressor and evaporative condenser, the output of described the first evaporimeter successively by compressor with after condenser, be connected with the expander inlet of expansion-compressor; The decompressor outlet of described expansion-compressor is connected with the left side input of evaporative condenser, and the right side output of evaporative condenser and the input of the first evaporimeter are connected to form closed circuit;
Described steam compressed low temperature level refrigeration cycle and steam compressed high temperature level refrigeration cycle share expansion-compressor and evaporative condenser, also comprise choke valve and the second evaporimeter, the compressor outlet of described expansion-compressor is connected with the downside input of evaporative condenser, the downside output of evaporative condenser is connected with the input of the second evaporimeter through choke valve, and the output of the second evaporimeter is connected with the compressor inlet of expansion-compressor.
2. the many warm areas cold acquisition methods reclaim driving based on expansion work as claimed in claim 1, it is characterized in that: in steam compressed high temperature level kind of refrigeration cycle, cold-producing medium expands after step-down in expansion-compressor, first pass through the cold-producing medium in evaporative condenser condensation low temperature level kind of refrigeration cycle, then enter the first evaporator evaporation heat absorption and obtain cold; In steam compressed low temperature level kind of refrigeration cycle, the expansion work compression and low pressure cold-producing medium that utilizes expansion-compressor to reclaim, the condensation in evaporative condenser of the cold-producing medium after pressurization, after choke valve reducing pressure by regulating flow, cold-producing medium evaporation endothermic in the second evaporimeter obtains low temperature.
3. the many warm areas cold acquisition methods reclaim driving based on expansion work according to claim 2, it is characterized in that: in steam compressed low temperature level kind of refrigeration cycle, the low-temperature low-pressure refrigerant condensation after the gaseous refrigerant after pressurization expands in steam compressed high temperature level kind of refrigeration cycle; In steam compressed high temperature level kind of refrigeration cycle, adopt R744 or R404A or R507 cold-producing medium.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352601A (en) * | 2016-03-14 | 2017-01-25 | 李华玉 | Third-type thermally driven compression heat pump |
| CN107246739A (en) * | 2017-06-02 | 2017-10-13 | 北京理工大学 | Hydrogen internal combustion engine automobile high pressure hydrogen refrigerating plant |
| CN109974322A (en) * | 2019-04-18 | 2019-07-05 | 天津商业大学 | A kind of dual-temperature zone single grade refrigeration system with expanding machine |
| CN110375454A (en) * | 2019-06-24 | 2019-10-25 | 东南大学 | A kind of pressure energy of natural gas refrigeration system |
| CN114963598A (en) * | 2022-04-27 | 2022-08-30 | 东南大学 | Pressing and clamping refrigeration system based on expansion work recovery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121169A (en) * | 1994-06-27 | 1996-04-24 | 普拉塞尔技术有限公司 | Cooling system employing a primary, high pressure closed refrigeration loop and a secondary refrigeration loop |
| CN1417478A (en) * | 2002-12-16 | 2003-05-14 | 西安交通大学 | Rotor compression-expansion machine for refrigerating system |
| CN1886625A (en) * | 2003-11-28 | 2006-12-27 | 三菱电机株式会社 | Freezer and air contitioner |
| JP2009287866A (en) * | 2008-05-30 | 2009-12-10 | Ntn Corp | Air cycle refrigerating device |
| CN103398485A (en) * | 2013-08-07 | 2013-11-20 | 东南大学 | Steam compression refrigerating system device and supercooling method |
-
2013
- 2013-12-06 CN CN201310658797.XA patent/CN103615824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121169A (en) * | 1994-06-27 | 1996-04-24 | 普拉塞尔技术有限公司 | Cooling system employing a primary, high pressure closed refrigeration loop and a secondary refrigeration loop |
| CN1417478A (en) * | 2002-12-16 | 2003-05-14 | 西安交通大学 | Rotor compression-expansion machine for refrigerating system |
| CN1886625A (en) * | 2003-11-28 | 2006-12-27 | 三菱电机株式会社 | Freezer and air contitioner |
| JP2009287866A (en) * | 2008-05-30 | 2009-12-10 | Ntn Corp | Air cycle refrigerating device |
| CN103398485A (en) * | 2013-08-07 | 2013-11-20 | 东南大学 | Steam compression refrigerating system device and supercooling method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352601A (en) * | 2016-03-14 | 2017-01-25 | 李华玉 | Third-type thermally driven compression heat pump |
| CN106352601B (en) * | 2016-03-14 | 2020-04-07 | 李华玉 | Third-class thermally-driven compression heat pump |
| CN107246739A (en) * | 2017-06-02 | 2017-10-13 | 北京理工大学 | Hydrogen internal combustion engine automobile high pressure hydrogen refrigerating plant |
| CN109974322A (en) * | 2019-04-18 | 2019-07-05 | 天津商业大学 | A kind of dual-temperature zone single grade refrigeration system with expanding machine |
| CN109974322B (en) * | 2019-04-18 | 2024-03-26 | 天津商业大学 | Double-temperature-zone single-stage refrigerating system with expander |
| CN110375454A (en) * | 2019-06-24 | 2019-10-25 | 东南大学 | A kind of pressure energy of natural gas refrigeration system |
| CN114963598A (en) * | 2022-04-27 | 2022-08-30 | 东南大学 | Pressing and clamping refrigeration system based on expansion work recovery |
| CN114963598B (en) * | 2022-04-27 | 2023-03-31 | 东南大学 | Pressing and clamping refrigeration system based on expansion work recovery |
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| CN103615824B (en) | 2016-08-17 |
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Inventor after: Zhe Xiaohui Inventor after: Yin Yonggao Inventor after: Liu Jian Inventor after: Zhou Wei Inventor after: Zhang Xiaosong Inventor before: Zhe Xiaohui Inventor before: Yin Yonggao Inventor before: Zhang Xiaosong |
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