CN104236159A - Refrigerating system driven by multiple energy resources and refrigerating method - Google Patents

Refrigerating system driven by multiple energy resources and refrigerating method Download PDF

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CN104236159A
CN104236159A CN201410516643.1A CN201410516643A CN104236159A CN 104236159 A CN104236159 A CN 104236159A CN 201410516643 A CN201410516643 A CN 201410516643A CN 104236159 A CN104236159 A CN 104236159A
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working medium
gas
regenerative
liquid separator
outlet
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CN104236159B (en
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谈莹莹
王林
谢镭
付文轩
朱海华
段丽平
马爱华
白得坡
任秀宏
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Henan University of Science and Technology
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Henan University of Science and Technology
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Abstract

The invention relates to a refrigerating system driven by multiple energy resources and a refrigerating method. The refrigerating system driven by the multiple energy resources comprises a jet refrigeration part and a compression type refrigeration part, wherein the jet refrigeration part comprises a gas-liquid separator, the compression type refrigeration part comprises a compressor, an evaporator used for refrigeration and a throttling component which is connected to a working medium inlet of the evaporator in series, a backheating device used for converting a working medium into a gas-and-liquid-phase mixing type working medium by lowering the temperature is connected to a working medium outlet of the compressor, at least one stage of gas-phase working medium separating and condensing device is arranged between the backheating device and a working medium inlet of the throttling component, the gas-phase working medium separating and condensing device comprises a secondary gas-liquid separator and a secondary backheating device, a working medium outlet of the secondary gas-liquid separator is connected with a thermal working medium channel outlet of the backheating device or a thermal working medium channel outlet of the secondary backheating device of the superior gas-phase working medium separating and condensing device, and a working medium outlet of the secondary backheating device is connected with the working medium inlet of the throttling component. By the adoption of the refrigerating system driven by the multiple energy resources, lower refrigeration temperature can be obtained.

Description

A kind of multiple-energy-source drives refrigeration system and refrigerating method
Technical field
The present invention relates to a kind of multiple-energy-source and drive refrigeration system and refrigerating method.
Background technology
Ejector refrigeration has the advantage utilizing low-grade low-temperature heat source to realize refrigeration, and system architecture simply, does not contain moving component, reliability is high.But, conventional spray refrigeration system adopts one-component cold-producing medium working medium, and is subject to injector and presses smaller restriction, is difficult to the requirement reaching refrigeration working medium evaporating pressure under lower cryogenic temperature, therefore cryogenic temperature is higher, its practical application is very limited.Therefore, in order to obtain lower cryogenic temperature, the usual employing cascade refrigeration circulatory system, adopt multiple non-azeotropic refrigerant as cold-producing medium, according to the non-azeotropic mixed working medium feature that gas phase is different with liquid phase component concentration under gas-liquid phase equilibrium state, utilize gas-liquid separator higher boiling liquid refrigerant and low boiling gaseous working medium to be separated, realize low boiling working fluid condensation by the evaporation of higher boiling working medium, only need a compressor just can obtain lower cryogenic temperature.
The existing cascade refrigeration circulatory system is as the composite low-temperature refrigerating system of application number a kind of low grade heat energy process auxiliary drive disclosed in the Chinese patent of 201010510850.8, comprise ejector refrigeration part (i.e. low grade heat energy slave part) and compression-type refrigeration part, ejector refrigeration part comprises the generator connected successively, injector, condenser, gas-liquid separator, other corresponding backheat elements such as working medium pump and the first regenerator, compression-type refrigeration part comprises compressor, for the evaporimeter freezed, be serially connected in the working medium entrance of evaporimeter second section stream unit and by condenser/evaporator, the regenerative apparatus that the backheat elements such as regenerator are formed, the working medium entrance of compressor exports (i.e. gas outlet) with the gas-phase working medium of gas-liquid separator and is connected.In order to obtain better performance, in gas-liquid separator, be also provided with segregator (i.e. the 4th regenerator).During work, composite low-temperature refrigerating system realizes higher boiling working fluid condenses by the injector that low-grade heat the subject of knowledge and the object of knowledge drives and becomes liquid using as low boiling working fluid cooling medium, another effect of injector increases the low boiling working fluid pressure of inspiration(Pi) at compressor air suction mouth, reduce compressor pressure ratios, realize lower cryogenic temperature.Because in this circulation, the compression process of higher boiling working medium has been come by injector, therefore save compressor wasted work amount, injector also improves the pressure of inspiration(Pi) of compressor air suction mouth low boiling working fluid, also contributes to reducing compressor power consumption further.But due to the restriction of gas-liquid separator gas-liquid separation performance, still have more higher boiling working medium point and enter evaporimeter, thus affect refrigeration system refrigeration performance, cryogenic temperature is higher.
Summary of the invention
The object of this invention is to provide a kind of multiple-energy-source that can realize lower cryogenic temperature and drive refrigeration system, meanwhile, present invention also offers a kind of multiple-energy-source that can realize lower cryogenic temperature and drive refrigerating method.
The technical scheme that in the present invention, a kind of multiple-energy-source drives refrigeration system to adopt is: a kind of multiple-energy-source drives refrigeration system, comprise ejector refrigeration part and compression-type refrigeration part, described ejector refrigeration part comprises gas-liquid separator, described compression-type refrigeration part comprises compressor, for the evaporimeter that freezes and the throttle part of working medium entrance being serially connected in evaporimeter, the sender property outlet of described compressor is connected with for making working medium be converted into the regenerative apparatus of liquid phase admixture by reducing temperature, at least one-level gas-phase working medium separating and condensing device is provided with between the working medium entrance of described regenerative apparatus and described throttle part, described gas-phase working medium separating and condensing device comprises secondary gas-liquid separator and secondary regenerative apparatus, the sender property outlet of described secondary gas-liquid separator is connected with the hot working fluid channel outlet of secondary regenerative apparatus in described regenerative apparatus or higher level's gas-phase working medium separating and condensing device, the sender property outlet of described secondary regenerative apparatus is connected with the working medium entrance of described restricting element.
Described secondary regenerative apparatus comprises at least one secondary backheat element, and the liquid phase working fluid outlet of described secondary gas-liquid separator is connected with secondary restricting element, and the sender property outlet of secondary restricting element is connected in series with the cold working medium passage of at least one regenerative apparatus.
Described secondary backheat element comprises condenser/evaporator, and the hot working fluid passage of described condenser/evaporator is serially connected in the gas-phase working medium outlet of described secondary gas-liquid separator and cold working medium feeder connection is communicated with described secondary restricting element; Described secondary backheat element also comprises the segregator be arranged in secondary gas-liquid separator, the cold working medium channel outlet of condenser/evaporator is communicated with the working medium entrance of described segregator, and the sender property outlet of described segregator is communicated with to the driving fluid entrance of injector in described ejector refrigeration part or is communicated with described driving fluid entrance after corresponding described regenerative apparatus.
Described regenerative apparatus comprises compressor regenerator, and between the working medium pump that the cold working medium passage of compressor regenerator is serially connected in ejector refrigeration part and generator, the hot working fluid feeder connection of compressor regenerator is communicated with the sender property outlet of described compressor.Arrange compressor regenerator to discharge the waste heat of working medium and heat the medium in generator by effective recycling compressor, further elevator system Energy Efficiency Ratio, significantly improves refrigerating efficiency.
Described regenerative apparatus also comprises the condenser be serially connected between described compressor regenerator and the secondary gas-liquid separator of the first order.
The technical scheme that in the present invention, multiple-energy-source drives refrigerating method to adopt is: multiple-energy-source drives refrigerating method, the method comprises the following steps: the working medium that the sender property outlet of described compressor flows out is reduced temperature by regenerative apparatus, makes working medium be converted into liquid phase admixture; Working medium regenerative apparatus outlet flowed out again is by passing into the working medium entrance of the throttle part be connected in series with evaporimeter again after at least one-level gas-phase working medium separating and condensing device, described gas-phase working medium separating and condensing device comprises secondary gas-liquid separator and secondary regenerative apparatus, the sender property outlet of described secondary gas-liquid separator is connected with the hot working fluid channel outlet of secondary regenerative apparatus in described regenerative apparatus or higher level's gas-phase working medium separating and condensing device, and the sender property outlet of described secondary regenerative apparatus is connected with the working medium entrance of described restricting element.
Described secondary regenerative apparatus comprises at least one secondary backheat element, and the liquid phase working fluid outlet of described secondary gas-liquid separator is connected with secondary restricting element, and the sender property outlet of secondary restricting element is connected in series with the cold working medium passage of at least one regenerative apparatus.
Described secondary backheat element comprises condenser/evaporator, and the hot working fluid passage of described condenser/evaporator is serially connected in the gas-phase working medium outlet of described secondary gas-liquid separator and cold working medium feeder connection is communicated with described secondary restricting element; Described secondary backheat element also comprises the segregator be arranged in secondary gas-liquid separator, the cold working medium channel outlet of condenser/evaporator is communicated with the working medium entrance of described segregator, and the sender property outlet of described segregator is communicated with to the driving fluid entrance of injector in described ejector refrigeration part or is communicated with described driving fluid entrance after corresponding backheat element.
Described regenerative apparatus comprises compressor regenerator, between the working medium pump that the cold working medium passage of compressor regenerator is serially connected in ejector refrigeration part and generator, the hot working fluid feeder connection of compressor regenerator is communicated with the sender property outlet of described compressor, and described regenerative apparatus also comprises the condenser be serially connected between described compressor regenerator and the secondary gas-liquid separator of the first order.
Described gas-phase working medium separating and condensing device is only provided with one-level.
The present invention adopts technique scheme, multiple-energy-source drives refrigeration system to comprise ejector refrigeration part and compression-type refrigeration part, described ejector refrigeration part comprises gas-liquid separator, described compression-type refrigeration part comprises compressor, for the evaporimeter that freezes and the throttle part of working medium entrance being serially connected in evaporimeter, the sender property outlet of described compressor is connected with for making working medium be converted into the regenerative apparatus of liquid phase admixture by reducing temperature, at least one-level gas-phase working medium separating and condensing device is provided with between the working medium entrance of described regenerative apparatus and described throttle part, described gas-phase working medium separating and condensing device comprises secondary gas-liquid separator and secondary regenerative apparatus, the sender property outlet of described secondary gas-liquid separator is connected with the hot working fluid channel outlet of secondary regenerative apparatus in described regenerative apparatus or higher level's gas-phase working medium separating and condensing device, the sender property outlet of described secondary regenerative apparatus is connected with the working medium entrance of described restricting element, two-stage can be formed like this be separated, the overwhelming majority entering throttle part from the gas-phase working medium outlet of the secondary gas-liquid separation device of most end one-level is low boiling working fluid, compressor pressure ratios is reduced by utilizing injector, lower cryogenic temperature can be realized, improve refrigeration performance, low boiling working fluid refrigerating effect per unit swept volume is larger than higher boiling working medium refrigerating effect per unit swept volume, compressor volume can be reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation that in the present invention, a kind of multiple-energy-source drives the embodiment one of refrigeration system;
Fig. 2 is the structural representation that in the present invention, a kind of multiple-energy-source drives the embodiment two of refrigeration system.
The name that in figure, each Reference numeral is corresponding is called: 1-generator, 2-injector, 3-first regenerator, 4-first condenser, 5-first gas-liquid separator, 6-first segregator, 7-compressor, 8-second regenerator, 9-the 3rd regenerator, 10-second condenser, 11-second gas-liquid separator, 12-second segregator, 13-condenser/evaporator, 14-the 4th regenerator, 15-the 3rd choke valve, 16-evaporimeter, 17-second throttle, 18-first throttle valve, 19-working medium pump.
Detailed description of the invention
In the present invention, a kind of multiple-energy-source drives the embodiment one of refrigeration system as shown in Figure 1, is that a kind of multiple-energy-source drives-100 ~-30 DEG C of warm area composite refrigeration systems, comprises compressor-type refrigerating part and ejector refrigeration part.
Wherein ejector refrigeration part comprises generator 1, injector 2, first regenerator 3, first condenser 4, first gas-liquid separator 5, first throttle valve 18 and working medium pump 19 etc., the first segregator 6 is also provided with in first gas-liquid separator 5, described generator 1 exports and is connected with the Working-fluid intaking of injector 2, injector 2 exports and is connected with the first condenser 4 entrance through the first regenerator 3, first condenser 4 exports and is connected with the entrance of the first gas-liquid separator 5, bottom first gas-liquid separator 5, liquid outlet is divided into two-way, one tunnel is successively through working medium pump 19, first regenerator 3 is connected with generator 1 entrance with the second regenerator 8, another road access first throttle valve 18 entrance, first gas outlet, gas-liquid separator 5 top is connected with compressor 7 air entry.Second regenerator 8 forms compressor regenerator.
Compressor-type refrigerating part comprises compressor 7, the 3rd choke valve 15 and the evaporimeter 16 etc. for freezing, and the 3rd choke valve 15 is for being serially connected in the throttle part of the working medium entrance of evaporimeter 16.The sender property outlet of compressor 7 is connected with for making working medium be converted into the regenerative apparatus of liquid phase admixture by reducing temperature, comprises the second regenerator 8, the 3rd regenerator 9 and the second condenser 10.One-level gas-phase working medium separating and condensing device is provided with between the working medium entrance of the second condenser 10 and the 3rd choke valve 15, this gas-phase working medium separating and condensing device comprises secondary gas-liquid separator and secondary regenerative apparatus, secondary gas-liquid separator is that the working medium entrance of the second gas-liquid separator 11, second gas-liquid separator 11 is connected with the sender property outlet of the second condenser 10; Regenerative apparatus comprises condenser/evaporator 13, the 4th regenerator 14 and is arranged on multiple secondary backheat elements such as the second segregator 12 in the second gas-liquid separator 11.Second gas outlet, gas-liquid separator 11 top access condenser/evaporator 13 high pressure side inlet, condenser/evaporator 13 high pressure side outlet is through the 4th regenerator 14, 3rd choke valve 15 accesses evaporimeter 16 entrance, evaporimeter 16 exports and accesses condenser/evaporator 13 low pressure side inlet through the 4th regenerator 14, bottom second gas-liquid separator 11, liquid outlet accesses condenser/evaporator 13 low pressure side inlet through second throttle 17, condenser/evaporator 13 low side outlets exports with first throttle valve 18 and is connected after the second segregator 12, injector 2 driving fluid entrance is accessed again through the first segregator 6 and the 3rd regenerator 9.
Above-mentioned multiple-energy-source drives refrigeration system mixed working fluid (cold-producing medium) used to comprise higher boiling working medium and low boiling working fluid, described higher boiling working medium is the one in R600a, R152a, R134a and R22, and described low boiling working fluid is the one in R23, R170, R290 and R32.
During work, in generator 1, liquid mixed refrigerant is heat vaporized is high pressure superheater state refrigerant vapour, the low pressure mixed refrigerant vapor of the cold working medium channel outlet (low side outlets) of injector 2 injection the 3rd regenerator 9 is entered as working gas, refrigerant vapour mixes supercharging in injector 2, the intermediate pressure state superheated refrigerant mixed vapour that injector 2 exports enters the first condenser 4 and is cooled to vehicle repair major mix refrigerant further after the first regenerator 3 heat exchange, enter the first gas-liquid separator 5 again and realize gas phase and liquid phase separation, in first gas-liquid separator 5, vapor phase refrigerant is after the further purification of the first segregator 6, gas phase portion is mainly low boiling point refrigerant and a small amount of higher boiling cold-producing medium, liquid phase part is mainly higher boiling cold-producing medium and a small amount of low boiling point refrigerant, flow out liquid refrigerant bottom first gas-liquid separator 5 and be divided into two-way, one tunnel enters generator 1 by the heat vaporized working fluid for injector 2 after working medium pump 19 pressurizes after the first regenerator 3 and the second regenerator 8 heat exchange, another road enters first throttle valve 18 reducing pressure by regulating flow becomes low-temp low-pressure mix refrigerant, the gaseous refrigerant that first gas-liquid separator 5 top is flowed out is through compressor 7, enter the second condenser 10 after second regenerator 8 and the 3rd regenerator 9 heat exchange and be cooled to vehicle repair major mix refrigerant further, enter the second gas-liquid separator 11 again and realize gas phase and liquid phase separation, in second gas-liquid separator 11, vapor phase refrigerant is after the further purification of the second segregator 12, gas phase portion is mainly low boiling point refrigerant and a small amount of higher boiling cold-producing medium, liquid phase part is mainly higher boiling cold-producing medium and a small amount of low boiling point refrigerant, flow out liquid refrigerant bottom second gas-liquid separator 11 to enter second throttle 17 reducing pressure by regulating flow and become low-temp low-pressure mix refrigerant, second gas-liquid separator 11 overhead stream goes out gaseous refrigerant and enters after condenser/evaporator 13 high-pressure side condensation again through the 4th regenerator 14 heat exchange, 3rd choke valve 15 reducing pressure by regulating flow enters evaporimeter 16 evaporation endothermic refrigeration, the low-temperature low-pressure refrigerant that the low-temperature low-pressure refrigerant steam flowing out evaporimeter 16 flows out with second throttle 17 after the 4th regenerator 14 heat exchange is mixed into condenser/evaporator 13 low-pressure side and evaporates, after the first segregator 6 and the 3rd regenerator 9 heat exchange, injector 2 is entered by the high pressure refrigerant vapor injection from generator 1 after the low-temperature low-pressure refrigerant that low pressure refrigerant after evaporation exports with first throttle valve 18 after the second segregator 12 heat exchange mixes.Through above-mentioned cyclic process, in evaporimeter 16, obtain-100 ~-30 DEG C of cryogenic refrigeration temperature.Above-mentioned cyclic process is also the embodiment one that in the present invention, multiple-energy-source drives refrigerating method.
Embodiment two as shown in Figure 2, is with the difference of embodiment one, and in the present embodiment, the second segregator 12 sender property outlet does not access the working medium entrance of the first segregator 6, but directly accesses the cold working medium feeder connection of the 3rd regenerator 9.
During work, in generator 1, liquid mixed refrigerant is heat vaporized is high pressure superheater state refrigerant vapour, the low pressure mixed refrigerant vapor of the cold working medium channel outlet (low side outlets) of injector 2 injection the 3rd regenerator 9 is entered as working gas, refrigerant vapour mixes supercharging in injector 2, the intermediate pressure state superheated refrigerant mixed vapour that injector 2 exports enters the first condenser 4 and is cooled to vehicle repair major mix refrigerant further after the first regenerator 3 heat exchange, enter the first gas-liquid separator 5 again and realize gas phase and liquid phase separation, in first gas-liquid separator 5, vapor phase refrigerant is after the further purification of the first segregator 6, gas phase portion is mainly low boiling point refrigerant and a small amount of higher boiling cold-producing medium, liquid phase part is mainly higher boiling cold-producing medium and a small amount of low boiling point refrigerant, flow out liquid refrigerant bottom first gas-liquid separator 5 and be divided into two-way, one tunnel enters generator 1 by the heat vaporized working fluid for injector 2 after working medium pump 19 pressurizes after the first regenerator 3 and the second regenerator 8 heat exchange, another road enters the first segregator 6 heat exchange after entering first throttle valve 18 reducing pressure by regulating flow, the gaseous refrigerant that first gas-liquid separator 5 top is flowed out is through compressor 7, enter the second condenser 10 after second regenerator 8 and the 3rd regenerator 9 heat exchange and be cooled to vehicle repair major mix refrigerant further, enter the second gas-liquid separator 11 again and realize gas phase and liquid phase separation, in second gas-liquid separator 11, vapor phase refrigerant is after the further purification of the second segregator 12, gas phase portion is mainly low boiling point refrigerant and a small amount of higher boiling cold-producing medium, liquid phase part is mainly higher boiling cold-producing medium and a small amount of low boiling point refrigerant, flow out liquid refrigerant bottom second gas-liquid separator 11 to enter second throttle 17 reducing pressure by regulating flow and become low-temp low-pressure mix refrigerant, second gas-liquid separator 11 overhead stream goes out gaseous refrigerant and enters after condenser/evaporator 13 high-pressure side condensation again through the 4th regenerator 14 heat exchange, 3rd choke valve 15 reducing pressure by regulating flow enters evaporimeter 16 evaporation endothermic refrigeration, the low-temperature low-pressure refrigerant that the low-temperature low-pressure refrigerant steam flowing out evaporimeter 16 flows out with second throttle 17 after the 4th regenerator 14 heat exchange is mixed into condenser/evaporator 13 low-pressure side and evaporates, the low-temperature low-pressure refrigerant that low pressure refrigerant after evaporation exports with the first segregator 6 after the second segregator 12 heat exchange mixes and after the 3rd regenerator 9 heat exchange, is entered injector 2 by the high pressure refrigerant vapor injection from generator 1 again.Through above-mentioned cyclic process, in evaporimeter 16, obtain-100 ~-30 DEG C of cryogenic refrigeration temperature.Above-mentioned cyclic process is also the embodiment two that in the present invention, multiple-energy-source drives refrigerating method.
In the above-described embodiments, multiple-energy-source drives the gas-phase working medium separating and condensing device in refrigeration system to be only provided with one-level, and in other embodiments of the invention, gas-phase working medium separating and condensing device also can arrange more than two-stage.In addition, the first regenerator 3, second regenerator 8, the 3rd regenerator 9, the 4th regenerator 14 is provided with in above-described embodiment, and regenerator belongs to conventional in refrigeration machine technical field but the parts of nonessential installation, also all can saving in other embodiments of the invention or partly save, also can increase regenerator in addition needing the position to working medium cooling.

Claims (10)

1. a multiple-energy-source drives refrigeration system, comprise ejector refrigeration part and compression-type refrigeration part, described ejector refrigeration part comprises gas-liquid separator, described compression-type refrigeration part comprises compressor, for the evaporimeter that freezes and the throttle part of working medium entrance being serially connected in evaporimeter, it is characterized in that: the sender property outlet of described compressor is connected with for making working medium be converted into the regenerative apparatus of liquid phase admixture by reducing temperature, at least one-level gas-phase working medium separating and condensing device is provided with between the working medium entrance of described regenerative apparatus and described throttle part, described gas-phase working medium separating and condensing device comprises secondary gas-liquid separator and secondary regenerative apparatus, the sender property outlet of described secondary gas-liquid separator is connected with the hot working fluid channel outlet of secondary regenerative apparatus in described regenerative apparatus or higher level's gas-phase working medium separating and condensing device, the sender property outlet of described secondary regenerative apparatus is connected with the working medium entrance of described restricting element.
2. a kind of multiple-energy-source according to claim 1 drives refrigeration system, it is characterized in that: described secondary regenerative apparatus comprises at least one secondary backheat element, the liquid phase working fluid outlet of described secondary gas-liquid separator is connected with secondary restricting element, and the sender property outlet of secondary restricting element is connected in series with the cold working medium passage of at least one regenerative apparatus.
3. a kind of multiple-energy-source according to claim 2 drives refrigeration system, it is characterized in that: described secondary backheat element comprises condenser/evaporator, the hot working fluid passage of described condenser/evaporator is serially connected in the gas-phase working medium outlet of described secondary gas-liquid separator and cold working medium feeder connection is communicated with described secondary restricting element; Described secondary backheat element also comprises the segregator be arranged in secondary gas-liquid separator, the cold working medium channel outlet of condenser/evaporator is communicated with the working medium entrance of described segregator, and the sender property outlet of described segregator is communicated with to the driving fluid entrance of injector in described ejector refrigeration part or is communicated with described driving fluid entrance after corresponding described regenerative apparatus.
4. a kind of multiple-energy-source according to claim 1 or 2 or 3 drives refrigeration system, it is characterized in that: described regenerative apparatus comprises compressor regenerator, between the working medium pump that the cold working medium passage of compressor regenerator is serially connected in ejector refrigeration part and generator, the hot working fluid feeder connection of compressor regenerator is communicated with the sender property outlet of described compressor.
5. a kind of multiple-energy-source according to claim 4 drives refrigeration system, it is characterized in that: described regenerative apparatus also comprises the condenser be serially connected between described compressor regenerator and the secondary gas-liquid separator of the first order.
6. multiple-energy-source drives refrigerating method, it is characterized in that the method comprises the following steps: the working medium that the sender property outlet of described compressor flows out is reduced temperature by regenerative apparatus, makes working medium be converted into liquid phase admixture; Working medium regenerative apparatus outlet flowed out again is by passing into the working medium entrance of the throttle part be connected in series with evaporimeter again after at least one-level gas-phase working medium separating and condensing device, described gas-phase working medium separating and condensing device comprises secondary gas-liquid separator and secondary regenerative apparatus, the sender property outlet of described secondary gas-liquid separator is connected with the hot working fluid channel outlet of secondary regenerative apparatus in described regenerative apparatus or higher level's gas-phase working medium separating and condensing device, and the sender property outlet of described secondary regenerative apparatus is connected with the working medium entrance of described restricting element.
7. multiple-energy-source according to claim 6 drives refrigerating method, it is characterized in that: described secondary regenerative apparatus comprises at least one secondary backheat element, the liquid phase working fluid outlet of described secondary gas-liquid separator is connected with secondary restricting element, and the sender property outlet of secondary restricting element is connected in series with the cold working medium passage of at least one regenerative apparatus.
8. multiple-energy-source according to claim 7 drives refrigerating method, it is characterized in that: described secondary backheat element comprises condenser/evaporator, the hot working fluid passage of described condenser/evaporator is serially connected in the gas-phase working medium outlet of described secondary gas-liquid separator and cold working medium feeder connection is communicated with described secondary restricting element; Described secondary backheat element also comprises the segregator be arranged in secondary gas-liquid separator, the cold working medium channel outlet of condenser/evaporator is communicated with the working medium entrance of described segregator, and the sender property outlet of described segregator is communicated with to the driving fluid entrance of injector in described ejector refrigeration part or is communicated with described driving fluid entrance after corresponding backheat element.
9. the multiple-energy-source according to claim 6 or 7 or 8 drives refrigerating method, it is characterized in that: described regenerative apparatus comprises compressor regenerator, between the working medium pump that the cold working medium passage of compressor regenerator is serially connected in ejector refrigeration part and generator, the hot working fluid feeder connection of compressor regenerator is communicated with the sender property outlet of described compressor, and described regenerative apparatus also comprises the condenser be serially connected between described compressor regenerator and the secondary gas-liquid separator of the first order.
10. the multiple-energy-source according to claim 6 or 7 or 8 drives refrigerating method, it is characterized in that: described gas-phase working medium separating and condensing device is only provided with one-level.
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CN104930751B (en) * 2015-05-29 2017-10-13 浙江工业大学 Injection compression refrigerating system with subcooler and utilization low grade heat energy
CN104913542B (en) * 2015-05-29 2017-10-13 浙江工业大学 The injection compression refrigerating system driven using the low grade heat energy of gas-liquid separator
CN104930752B (en) * 2015-05-29 2017-10-13 浙江工业大学 The injection compression refrigerating system driven using the low grade heat energy of subcooler

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