CN104913541A - Stirling cycle and steam compression refrigeration cycle directly-coupled refrigerating machine and method - Google Patents
Stirling cycle and steam compression refrigeration cycle directly-coupled refrigerating machine and method Download PDFInfo
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- CN104913541A CN104913541A CN201510269444.XA CN201510269444A CN104913541A CN 104913541 A CN104913541 A CN 104913541A CN 201510269444 A CN201510269444 A CN 201510269444A CN 104913541 A CN104913541 A CN 104913541A
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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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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Abstract
The invention discloses a Stirling cycle and steam compression refrigeration cycle directly-coupled refrigerating machine and method. The refrigerating machine comprises a Stirling refrigerating machine body and a steam compression refrigerating machine body. The Stirling refrigerating machine body comprises a compression piston, a compression cavity, a condensation evaporator, a heat regenerator, a cold-end heat exchanger, an expansion chamber and a push piston. The steam compression refrigerating machine body comprises a compressor, a condenser, a throttling valve and a condensation evaporator. Cold fluid in the condensation evaporators is a working medium for the steam compression refrigeration cycle, hot fluid is a working medium for the Stirling cycle, and the cold fluid and the hot fluid exchange heat through the wall of the heat exchanger. The working medium for the steam compression refrigeration cycle is used for directly cooling the working medium for the Stirling cycle, compared with a refrigerating medium cooling method, the average temperature of the working medium in the condensation evaporators can be greatly reduced, and the performance of the Stirling cycle is improved. The heat exchange process is simplified, auxiliary power consumption equipment of the condensation evaporators is reduced, and the refrigerating efficiency of the whole system is improved.
Description
Technical field
The present invention relates to regenerating type low-temperature refrigerator, particularly relate to a kind of Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method.
Technical background
The application of high temperature superconductor technology and small-sized low-temperature liquefaction device greatly facilitates the fast development of high-power Cryo Refrigerator.Sterlin refrigerator has the features such as efficiency is high, cooldown rate is fast, refrigeration temperature levels is wide, and its technology relative maturity, cost are lower, is hundred, the first-selected type of multikilowatt refrigerating plant.
Sterlin refrigerator application Stirling cycle obtains refrigerating capacity, and Stirling cycle holds by isotherm compression, isothermal expansion and two etc. the enclosed thermodynamic cycle that heat recovery process forms.The heat of compression that isotherm compression produces is taken away by refrigerating medium in indoor temperature end heat exchanger, and the general water that adopts is as refrigerating medium.In High cooling power refrigeration machine, the heat of compression is comparatively large, and because cooling water specific heat capacity is limited, causing water cooler to import and export water temperature has the larger temperature difference, and namely average temperature is higher than inflow temperature.Experiment and theory all prove, coolant water temperature rising can cause regenerator hot-side temperature to raise, and causes refrigeration machine hydraulic performance decline.Reducing cooling water temperature so take measures is very important for refrigeration machine performance boost.
Usual employing handpiece Water Chilling Units cools sterlin refrigerator hot junction.Sterlin refrigerator water cooler, water tank, pump and pipeline form circulation waterway, the cooling Stirling cycle heat of compression.Water tank, compression refrigerating machine, pump and pipeline form circulation waterway, cooling water tank heat.Sterlin refrigerator and auxiliary device thereof are considered as a whole, Overall Power Consumption comprises water tank refrigeration machine and pipeline wasted work, reduces the refrigerating efficiency that this place's power consumption effectively can improve sterlin refrigerator system.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method are provided.
The object of the invention is to be achieved through the following technical solutions:
Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle comprise sterlin refrigerator and vapor compression refrigerator, sterlin refrigerator comprises the compression piston, compression chamber, condenser/evaporator, regenerator, cool end heat exchanger, expansion chamber, the pushing piston that connect in turn, and vapor compression refrigerator comprises the compressor, condenser, choke valve, the condenser/evaporator that connect in turn.
Described condenser/evaporator adopts dividing wall type heat exchanger structure.
Stirling cycle and the direct-coupled refrigerating method of Vapor Compression Refrigeration Cycle are: compression piston moves, Stirling cycle working medium A in compression chamber is compressed, and energy raises, and flows into condenser/evaporator, discharge the heat of compression to Vapor Compression Refrigeration Cycle working medium B, realize the isotherm compression process of working medium A; Working medium B enters compressor after absorbing heat in condenser/evaporator and evaporating, enter condenser after being pressurized intensification, after Environmental cold source exothermic condensation, enter choke valve, pressure drop, the liquid refrigerant B of low-temp low-pressure enters condenser/evaporator heat absorption evaporation again, forms Vapor Compression Refrigeration Cycle loop.Working medium A after the release heat of compression enters regenerator, and transfer heat to filler, temperature streamwise reduces gradually, and realization etc. puts thermal process; Pushing piston moves, and the working medium A in expansion chamber expands, and energy reduces, and is absorbed heat from low-temperature receiver by cool end heat exchanger, obtains refrigerating capacity, realizes the isothermal expansion process of working medium A; Working medium A reverse flow, enters regenerator, and from filler heat absorption, temperature streamwise raises gradually, realizes waiting holding endothermic process.The reciprocal flowing of working medium A forms Stirling cycle loop; In condenser/evaporator, cold fluid is Vapor Compression Refrigeration Cycle working medium B, and hot fluid is Stirling cycle working medium A, and two fluids carries out heat exchange by heat exchange wall, the compression heat that the direct cooling working medium A of phase transformation applying working medium B discharges in Stirling cycle.
The compound profound hypothermia refrigeration machine that the present invention proposes, uses the phase-change heat-exchange of Vapor Compression Refrigeration Cycle working medium B directly to cool the compression heat of Stirling cycle.Compared with conventional handpiece Water Chilling Units cooling means: 1. Vapor Compression Refrigeration Cycle working medium B(cooling medium) latent heat be greater than specific heat of water and hold, then cool the heat of compression of equivalent and cooling medium inlet temperature is consistent time, in the present invention, in condenser/evaporator, cooling medium mean temperature is lower, regenerator hot-side temperature is lower, refrigerating performance enhances; 2. simplify the heat transfer process of Vapor Compression Refrigeration Cycle working medium and cooling water, cooling water and Stirling cycle working medium, avoid the leakage heat of heat transfer process and the water tank relating to cooling water itself, so the wasted work of compressor reduces when cooling the equal heat of compression, the refrigerating efficiency of whole system improves; 3. simplify the auxiliary device of refrigeration machine condenser/evaporator (indoor temperature end heat exchanger), avoid waterway circulating, owing to eliminating the power consumption of water pump, so the wasted work of compressor reduces when cooling the equal heat of compression, the refrigerating efficiency of whole system improves.
Accompanying drawing explanation
Fig. 1 is the structural representation of the direct-coupled refrigeration machine of Stirling cycle and Vapor Compression Refrigeration Cycle.
Detailed description of the invention
As shown in Figure 1, Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle comprise sterlin refrigerator and vapor compression refrigerator, sterlin refrigerator comprises the compression piston 1, compression chamber 2, condenser/evaporator 3, regenerator 4, cool end heat exchanger 5, expansion chamber 6, the pushing piston 7 that connect in turn, and vapor compression refrigerator comprises the compressor 8, condenser 9, choke valve 10, the condenser/evaporator 3 that connect in turn.
Described condenser/evaporator 3 adopts dividing wall type heat exchanger structure.Refrigeration machine driver element can adopt electric rotating machine and toggle.
The refrigerating method that Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle use is: compression piston 1 moves, Stirling cycle working medium A in compression chamber 2 is compressed, energy raises, flow into condenser/evaporator 3, discharge the heat of compression to Vapor Compression Refrigeration Cycle working medium B, realize the isotherm compression process of working medium A; Working medium B enters compressor 8 after absorbing heat in condenser/evaporator 3 and evaporating, condenser 9 is entered after being pressurized intensification, choke valve 10 is entered after Environmental cold source exothermic condensation, pressure drop, the liquid refrigerant B of low-temp low-pressure enters condenser/evaporator 3 heat absorption evaporation again, forms Vapor Compression Refrigeration Cycle loop.Working medium A after the release heat of compression enters regenerator 4, and transfer heat to filler, temperature streamwise reduces gradually, and realization etc. puts thermal process; Pushing piston 7 moves, and the working medium A in expansion chamber 6 expands, and energy reduces, and by cool end heat exchanger 5 from low-temperature receiver heat absorption, obtains refrigerating capacity, realizes the isothermal expansion process of working medium A; Working medium A reverse flow, enters regenerator 4, and from filler heat absorption, temperature streamwise raises gradually, realizes waiting holding endothermic process.The reciprocal flowing of working medium A forms Stirling cycle loop; In condenser/evaporator 3, cold fluid is Vapor Compression Refrigeration Cycle working medium B, and hot fluid is Stirling cycle working medium A, and two fluids carries out heat exchange by heat exchange wall, the compression heat that the direct cooling working medium A of phase transformation applying working medium B discharges in Stirling cycle.Stirling cycle working medium A generally uses high-pressure helium, hydrogen or nitrogen, and Vapor Compression Refrigeration Cycle working medium B generally uses the air-conditioning refrigerants such as freon.
Claims (3)
1. a Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle, it is characterized in that comprising sterlin refrigerator and vapor compression refrigerator, sterlin refrigerator comprises the compression piston (1), compression chamber (2), condenser/evaporator (3), regenerator (4), cool end heat exchanger (5), expansion chamber (6), the pushing piston (7) that connect in turn, and vapor compression refrigerator comprises the compressor (8), condenser (9), choke valve (10), the condenser/evaporator (3) that connect in turn.
2. a kind of Stirling cycle according to claim 1 and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle, is characterized in that: described condenser/evaporator (3) adopts dividing wall type heat exchanger structure.
3. one kind uses the refrigerating method of Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle as claimed in claim 1, it is characterized in that compression piston (1) moves, Stirling cycle working medium A in compression chamber (2) is compressed, energy raises, flow into condenser/evaporator (3), discharge the heat of compression to Vapor Compression Refrigeration Cycle working medium B, realize the isotherm compression process of working medium A; Working medium B enters compressor (8) after heat absorption evaporation in condenser/evaporator (3), condenser (9) is entered after being pressurized intensification, choke valve (10) is entered after Environmental cold source exothermic condensation, pressure drop, the liquid refrigerant B of low-temp low-pressure enters condenser/evaporator (3) heat absorption evaporation again, forms Vapor Compression Refrigeration Cycle loop, working medium A after the release heat of compression enters regenerator (4), transfer heat to filler, temperature streamwise reduces gradually, and realization etc. puts thermal process; Pushing piston moves by (7), and the working medium A in expansion chamber (6) expands, and energy reduces, and by cool end heat exchanger (5) from low-temperature receiver heat absorption, obtains refrigerating capacity, realizes the isothermal expansion process of working medium A; Working medium A reverse flow, enters regenerator (4), and from filler heat absorption, temperature streamwise raises gradually, realizes waiting holding endothermic process, and the reciprocal flowing of working medium A forms Stirling cycle loop; In condenser/evaporator (3), cold fluid is Vapor Compression Refrigeration Cycle working medium B, hot fluid is Stirling cycle working medium A, two fluids carries out heat exchange by heat exchange wall, the compression heat that the direct cooling working medium A of phase transformation applying working medium B discharges in Stirling cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510269444.XA CN104913541B (en) | 2015-03-09 | 2015-05-25 | Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method |
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| CN201510101760 | 2015-03-09 | ||
| CN2015101017606 | 2015-03-09 | ||
| CN201510269444.XA CN104913541B (en) | 2015-03-09 | 2015-05-25 | Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method |
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| CN104913541A true CN104913541A (en) | 2015-09-16 |
| CN104913541B CN104913541B (en) | 2017-07-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444126A (en) * | 2018-04-09 | 2018-08-24 | 杨厚成 | A kind of superposition type acoustic energy refrigeration machine |
| CN110160378A (en) * | 2019-04-25 | 2019-08-23 | 南华大学 | Breathing heat-exchanger rig and heat-exchange method based on decalescence device |
| CN110273779A (en) * | 2018-03-13 | 2019-09-24 | 浙江大学 | Regenerator and stirling cycle system based on phase-change material |
| CN110273780A (en) * | 2018-03-13 | 2019-09-24 | 浙江大学 | Regenerator and stirling cycle system with accumulation of heat shell |
| CN115111843A (en) * | 2022-06-27 | 2022-09-27 | 西安交通大学 | Coupled multi-temperature-zone refrigerating system |
| CN115325717A (en) * | 2022-10-14 | 2022-11-11 | 中国核动力研究设计院 | Heat exchange device and Brayton cycle system |
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2015
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273779A (en) * | 2018-03-13 | 2019-09-24 | 浙江大学 | Regenerator and stirling cycle system based on phase-change material |
| CN110273780A (en) * | 2018-03-13 | 2019-09-24 | 浙江大学 | Regenerator and stirling cycle system with accumulation of heat shell |
| CN108444126A (en) * | 2018-04-09 | 2018-08-24 | 杨厚成 | A kind of superposition type acoustic energy refrigeration machine |
| CN108444126B (en) * | 2018-04-09 | 2023-09-22 | 杨厚成 | Overlapping type acoustic energy refrigerator |
| CN110160378A (en) * | 2019-04-25 | 2019-08-23 | 南华大学 | Breathing heat-exchanger rig and heat-exchange method based on decalescence device |
| CN115111843A (en) * | 2022-06-27 | 2022-09-27 | 西安交通大学 | Coupled multi-temperature-zone refrigerating system |
| CN115325717A (en) * | 2022-10-14 | 2022-11-11 | 中国核动力研究设计院 | Heat exchange device and Brayton cycle system |
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| CN104913541B (en) | 2017-07-28 |
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