CN104913542A - Injection-compression refrigerating system driven by adopting low-grade heat energy of gas-liquid separator - Google Patents
Injection-compression refrigerating system driven by adopting low-grade heat energy of gas-liquid separator Download PDFInfo
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- CN104913542A CN104913542A CN201510292599.5A CN201510292599A CN104913542A CN 104913542 A CN104913542 A CN 104913542A CN 201510292599 A CN201510292599 A CN 201510292599A CN 104913542 A CN104913542 A CN 104913542A
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- liquid separator
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- injection
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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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- 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
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses an injection-compression refrigerating system driven by adopting low-grade heat energy of a gas-liquid separator. An outlet of an evaporator is connected with a driving fluid inlet of an injector; an outlet of a compressor is connected with a first inlet of a pre-heater; a first outlet of the pre-heater is connected with an inlet of a condenser; an outlet of the condenser is connected with an inlet of a first gas-liquid separator by a first throttling gear; a liquid-phase outlet of the first gas-liquid separator is connected with an inlet of the evaporator by a second throttling gear; a gas-phase outlet of the first gas-liquid distributor is connected with an inlet of the compressor; an outlet of the injector is connected with an inlet of a second gas-liquid separator; a gas-phase outlet of the second gas-liquid separator is connected with the inlet of the compressor; a liquid-phase outlet of the second gas-liquid separator is connected with a second inlet of the pre-heater; a second outlet of the pre-heater is connected with an inlet of a generator; an outlet of the generator is connected with a working fluid inlet of the injector. The injection-compression refrigerating system is relatively high in efficiency, relatively low in energy consumption, capable of utilizing a heat source with a relatively low temperature, and good in energy-saving efficiency.
Description
Technical field
The present invention relates to refrigeration technology field, especially a kind of injection-compression refrigerating system.
Background technology
The development of human civilization, for people create good days, but simultaneously also constantly consume mass energy, and to environmental emission a large amount of refuse.Along with the mankind are to naturally asking for continuous increase, the warning of the Nature is also day by day serious.Therefore, people enjoy facility that modern technologies bring and comfortable while also require to minimize the consumption of the energy and the pollution of environment.Energy-conserving and emission-cutting technology has become the focus of the concern of the world today.
Refrigeration Technique is the key areas of energy resource consumption, is applied to building, chemical industry, the energy, medical treatment etc. various aspects, discharge great amount of carbon dioxide.Therefore energy-conservation Refrigeration Technique is current study hotspot.Jet refrigeration circulation, as a kind of thermal drivers Refrigeration Technique, can utilize the low-grade heat of discharging in industry life, produce useful cryogenic cold energy, turn waste into wealth, save power consumption.Above-mentioned used heat is low due to its temperature, is difficult to be utilized, and also may cause thermal pollution if directly enter in environment.And to be used by this kind of thermal drivers of ejector refrigeration technology be good way.In addition, the low-grade heat source such as solar heat, geothermal energy also can carry out similar utilization.Certain ejector refrigeration also especially shortcoming, namely efficiency is often lower and affect larger by heat source temperature.Mechanical compression refrigeration system in contrast, has relatively high efficiency and stability, but needs to consume a large amount of valuable electric energy, cannot meet the needs of energy-saving and emission-reduction.
Summary of the invention
In order to overcome existing injection refrigerating system efficiency lower, unstable, lower temperature and the larger deficiency of compression refrigerating system energy consumption can not be utilized, the invention provides that a kind of efficiency is higher, energy consumption is less, the thermal source of lower temperature can be utilized, injection-compression refrigerating system that the low grade heat energy of employing gas-liquid separator that energy-conservation usefulness is good drives.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of injection-compression refrigerating system adopting the low grade heat energy of gas-liquid separator to drive, comprise compressor, preheater, condenser, evaporimeter and injector, the outlet of described evaporimeter is connected with the driving fluid import of described injector, the outlet of described compressor is connected with the first import of described preheater, first outlet of described preheater is connected with the import of condenser, described injection-compression refrigerating system also comprises first throttle device, second throttling arrangement, first gas-liquid separator, second gas-liquid separator and the generator for utilizing low-grade heat source liquid refrigerant to be converted to the steam of HTHP, the outlet of described condenser is connected through the import of first throttle device with described first gas-liquid separator, the liquid-phase outlet of described first gas-liquid separator is connected with the import of evaporimeter by the second throttling arrangement, the described gaseous phase outlet of the first gas-liquid separator is connected with the import of compressor, the outlet of described injector is connected with the import of described second gas-liquid separator, the described gaseous phase outlet of the second gas-liquid separator is connected with the import of compressor, the liquid-phase outlet of described second gas-liquid separator is connected with the second import of described preheater by pump, second outlet of described preheater is connected with the import of generator, the outlet of described generator is connected with the working fluid import of described injector.
Further, described first throttle device and the second throttling arrangement are choke valve, expansion valve or capillary.
Described preheater is shell-and-tube heat exchanger, plate type heat exchanger or double-tube heat exchanger.And the layout of each heat exchanger inner fluid can adopt adverse current, following current etc.; The working medium adopted can be halogenated hydrocarbons, alkane, carbon dioxide, ammonia etc.; To the low-grade heat source of generator heating, can be waste heat, used heat, solar heat, underground heat etc.
Technical conceive of the present invention is: together with injection and compression cycle are coupled to by gas-liquid separator by the present invention dexterously, form a kind of injection-compression refrigerating system adopting the low grade heat energy of vapour liquid separator to drive, the advantage that better both performances are respective, plays the effect of economize energy.System adopts two-stage throttling, condensed cold-producing medium first enters gas-liquid separator after one-level throttling, saturated gas phase is directly inhaled into compressor compresses in the separator, and saturated liquid phase now has more specific refrigerating effect, reach after evaporating temperature through next stage throttling and more refrigerating capacity is finally provided.The injected device of cold-producing medium of this low pressure sucks, supercharging is sucked by compressor after reaching intermediate pressure again.So in fact, add that the thermal drivers part of pump and generator completes the driving of low-pressure stage by injector, compressor then only needs the driving bearing hiigh pressure stage, effectively can reduce the consumption to electric energy, also can reduce compressor exhaust temperature simultaneously, extend its life-span.In addition, the cold-producing medium sucked due to injected device is the liquid phase part after one-level throttling, therefore conventional injection-compression refrigerating system is compared, The present invention reduces the live load of injector, decrease the consumption to low grade heat energy, can also injector be reduced, the size of generator and pump simultaneously, save initial cost.In addition the present invention's heat of also using compressor air-discharging carries out preheating to the liquid refrigerant after being pressurizeed by pump, make use of low grade heat energy further, embodies energy-conservation theory.
Beneficial effect of the present invention is mainly manifested in: during than existing injection refrigerating system and compression refrigerating system isolated operation, have higher efficiency, significantly reduce energy ezpenditure, and can utilize the thermal source of lower temperature, improves the energy-conservation usefulness of system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the injection-compression refrigerating system adopting the low grade heat energy of gas-liquid separator to drive.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, a kind of injection-compression refrigerating system adopting the low grade heat energy of gas-liquid separator to drive, comprise compressor 1, preheater 2, condenser 3, evaporimeter 7 and injector 10, the outlet of described evaporimeter 7 is connected with the driving fluid import of described injector 10, the outlet of described compressor 1 is connected with the first import of described preheater 2, first outlet of described preheater 2 is connected with the import of condenser 3, described injection-compression refrigerating system also comprises first throttle device 4, second throttling arrangement 6, first gas-liquid separator 5, second gas-liquid separator 11 and the generator 9 for utilizing low-grade heat source liquid refrigerant to be converted to the steam of HTHP, the outlet of described condenser 3 is connected through the import of first throttle device 4 with described first gas-liquid separator 5, the liquid-phase outlet of described first gas-liquid separator 5 is connected with the import of evaporimeter 7 by the second throttling arrangement 6, the gaseous phase outlet of described first gas-liquid separator 5 is connected with the import of compressor 1, the outlet of described injector 10 is connected with the import of described second gas-liquid separator 11, the gaseous phase outlet of described second gas-liquid separator 11 is connected with the import of compressor 1, the liquid-phase outlet of described second gas-liquid separator 11 is connected with the second import of described preheater 2 by pump 8, second outlet of described preheater 2 is connected with the import of generator 9, the outlet of described generator 9 is connected with the working fluid import of described injector 10.
In the present embodiment, first throttle device 4 and the second throttling arrangement 6 can be various choke valve, expansion valve, capillary; Preheater 2 can be various shell-and-tube heat exchanger, plate type heat exchanger, double-tube heat exchanger etc.; The working medium adopted can be all kinds of halogenated hydrocarbons, alkane, alkene, carbon dioxide, ammonia etc.; To the low-grade heat source of generator heating, can be waste heat, used heat, solar heat, underground heat etc.
The course of work of the present embodiment is: tentatively cooled after the high-temperature high-pressure refrigerant of compressor 1 outflow enters the first import of preheater 2, then enter again condenser 3 condensation heat release and become liquid state, liquid refrigerant becomes the vehicle repair major cold-producing medium with intermediate pressure through first throttle device 4 after condenser 3 exports outflow, and enters the first gas-liquid separator 5.The vapor phase refrigerant with intermediate pressure flows out from the first gas-liquid separator 5 gaseous phase outlet and enters compressor 1, the liquid phase refrigerant with intermediate pressure flows out from the liquid-phase outlet of the first gas-liquid separator 5 and reach evaporating pressure after the second throttling arrangement 6 further step-down, and enter evaporimeter 7 evaporation endothermic, the driving fluid entrance of injector 10 is then entered from evaporimeter 7 outlet.The cold-producing medium flowed out from the outlet of injector 10 enters the second gas-liquid separator 11, wherein vapor phase refrigerant flows out from the gaseous phase outlet of the second gas-liquid separator 11 and is sucked by compressor, and liquid phase refrigerant flows out after pump 8 pressurizes through preheater 2 preheating from the liquid-phase outlet of the second gas-liquid separator 11, heated from generator 9 and become steam, the Working-fluid intaking then entering injector 10 completes circulation.
Claims (3)
1. injection-the compression refrigerating system adopting the low grade heat energy of gas-liquid separator to drive, comprise compressor, preheater, condenser, evaporimeter and injector, the outlet of described evaporimeter is connected with the driving fluid import of described injector, the outlet of described compressor is connected with the first import of described preheater, first outlet of described preheater is connected with the import of condenser, it is characterized in that: described injection-compression refrigerating system also comprises first throttle device, second throttling arrangement, first gas-liquid separator, second gas-liquid separator and the generator for utilizing low-grade heat source liquid refrigerant to be converted to the steam of HTHP, the outlet of described condenser is connected through the import of first throttle device with described first gas-liquid separator, the liquid-phase outlet of described first gas-liquid separator is connected with the import of evaporimeter by the second throttling arrangement, the described gaseous phase outlet of the first gas-liquid separator is connected with the import of compressor, the outlet of described injector is connected with the import of described second gas-liquid separator, the described gaseous phase outlet of the second gas-liquid separator is connected with the import of compressor, the liquid-phase outlet of described second gas-liquid separator is connected with the second import of described preheater by pump, second outlet of described preheater is connected with the import of generator, the outlet of described generator is connected with the working fluid import of described injector.
2. injection-the compression refrigerating system adopting the low grade heat energy of gas-liquid separator to drive as claimed in claim 1, is characterized in that: described first throttle device and the second throttling arrangement are choke valve, expansion valve or capillary.
3. injection-the compression refrigerating system adopting the low grade heat energy of gas-liquid separator to drive as claimed in claim 1 or 2, is characterized in that: described preheater is shell-and-tube heat exchanger, plate type heat exchanger or double-tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510292599.5A CN104913542B (en) | 2015-05-29 | 2015-05-29 | The injection compression refrigerating system driven using the low grade heat energy of gas-liquid separator |
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| CN201510292599.5A CN104913542B (en) | 2015-05-29 | 2015-05-29 | The injection compression refrigerating system driven using the low grade heat energy of gas-liquid separator |
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| CN104913542A true CN104913542A (en) | 2015-09-16 |
| CN104913542B CN104913542B (en) | 2017-10-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981223A (en) * | 2018-09-17 | 2018-12-11 | 天津商业大学 | Injection supercooling refrigeration system |
| CN113483499A (en) * | 2021-05-31 | 2021-10-08 | 浙大宁波理工学院 | Low-power-consumption jet type refrigerating system provided with heat-driven pump |
| CN113654262A (en) * | 2021-08-31 | 2021-11-16 | 嵊州市浙江工业大学创新研究院 | Low-grade heat-driven refrigerating system for large-scale freezer |
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| US20030209032A1 (en) * | 2002-05-13 | 2003-11-13 | Hiromi Ohta | Vapor compression refrigerant cycle |
| EP1498671A1 (en) * | 2003-07-18 | 2005-01-19 | TGK Co., Ltd. | Refrigeration cycle |
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| CN104236159A (en) * | 2014-09-30 | 2014-12-24 | 河南科技大学 | Refrigerating system driven by multiple energy resources and refrigerating method |
| CN204329419U (en) * | 2014-12-18 | 2015-05-13 | 天津商业大学 | A kind of CO 2double throttle injection refrigerating system |
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2015
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| US20030209032A1 (en) * | 2002-05-13 | 2003-11-13 | Hiromi Ohta | Vapor compression refrigerant cycle |
| EP1498671A1 (en) * | 2003-07-18 | 2005-01-19 | TGK Co., Ltd. | Refrigeration cycle |
| CN2826302Y (en) * | 2005-09-26 | 2006-10-11 | 浙江春晖智能控制股份有限公司 | Refrigerating system of automobile air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981223A (en) * | 2018-09-17 | 2018-12-11 | 天津商业大学 | Injection supercooling refrigeration system |
| CN113483499A (en) * | 2021-05-31 | 2021-10-08 | 浙大宁波理工学院 | Low-power-consumption jet type refrigerating system provided with heat-driven pump |
| CN113654262A (en) * | 2021-08-31 | 2021-11-16 | 嵊州市浙江工业大学创新研究院 | Low-grade heat-driven refrigerating system for large-scale freezer |
| CN113654262B (en) * | 2021-08-31 | 2022-06-21 | 嵊州市浙江工业大学创新研究院 | Low-grade heat-driven refrigerating system for large-scale freezer |
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| CN104913542B (en) | 2017-10-13 |
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Application publication date: 20150916 Assignee: Ningbo Xueluden Intelligent Technology Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980035742 Denomination of invention: Jet compression refrigeration system driven by low-grade thermal energy using gas-liquid separator Granted publication date: 20171013 License type: Common License Record date: 20230520 |
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Application publication date: 20150916 Assignee: DEQING COUNTY XINCHENG LIGHTING LTD. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980040525 Denomination of invention: Jet compression refrigeration system driven by low-grade thermal energy using gas-liquid separator Granted publication date: 20171013 License type: Common License Record date: 20230825 Application publication date: 20150916 Assignee: Zhejiang Ruiyi Electric Appliance Manufacturing Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980040522 Denomination of invention: Jet compression refrigeration system driven by low-grade thermal energy using gas-liquid separator Granted publication date: 20171013 License type: Common License Record date: 20230828 |
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