CN102635972B - Cold-storing type solar-energy spraying and compression coupling refrigerating device - Google Patents

Cold-storing type solar-energy spraying and compression coupling refrigerating device Download PDF

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CN102635972B
CN102635972B CN 201210107924 CN201210107924A CN102635972B CN 102635972 B CN102635972 B CN 102635972B CN 201210107924 CN201210107924 CN 201210107924 CN 201210107924 A CN201210107924 A CN 201210107924A CN 102635972 B CN102635972 B CN 102635972B
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cold
refrigeration
compression
communicated
solar energy
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CN102635972A (en
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李风雷
田琦
刘玉香
郝存忠
李春雷
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太原理工大学
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Abstract

The invention relates to a cold-storing type solar-energy spraying and compression coupling refrigerating device which is composed of a cold-storing type solar-energy spraying and compression coupling refrigerating system and a compression refrigerating system. In an area with insufficient solar energy or during the time period of insufficient solar energy, the solar energy radiated energy is utilized by the device to refrigerate and store cold, so that the use ratio of solar energy is increased; compared with an electric compression refrigerating system, the device has the advantage that above 10% of energy is saved; and the user requirement is met while the energy conversation and emission reduction are realized.

Description

Cold storage solar energy jetting and compression coupling refrigerating apparatus

Technical field

The present invention relates to a kind of refrigerating plant, particularly relate to a kind of cold storage injection take solar energy and electric energy as driven by energy and compression coupling refrigerating apparatus, belong to refrigeration technology field.

Background technology

The characteristics such as that injection refrigerating system has is simple in structure, easy for installation, working stability, maintenance cost are low utilize solar energy to have the energy-conserving and environment-protective characteristics as the injection refrigerating system of driven by energy, have broad application prospects in the air conditioner refrigerating field.

During solar energy jetting refrigeration system independence cooling, only have solar energy sufficient, when having enough heats to make the occurrence temperature of generator be higher than a certain temperature, injection refrigerating system could normal operation.Owing to solar energy along with season, round the clock, the variation of weather changes, have unstability and intermittent characteristics, so for needs, the assurance cooling effect that satisfies refrigeration duty, common a kind of method is: adopt auxiliary thermal source and solar association to drive injection refrigerating system, make its occurrence temperature be higher than a certain design temperature, guarantee that refrigerating capacity meets consumers' demand.When being the solar energy abundance, adopt solar energy to drive injection refrigerating system; When solar energy is not enough, adopt auxiliary thermal source to drive injection refrigerating system.Because the thermal property coefficient of injection refrigerating system far below the mechanical performance coefficient of voltage compressing refrigeration system, can be offset the sufficient time electric energy approximately of solar energy to the poor efficiency utilization of heat energy, so the method is not a kind of desirable method.

Find through the literature search to prior art, unite supplying the cooling method of driving injection refrigerating system except adopting solar energy and auxiliary thermal source, adopting certain combined method, is that the additional of solar energy jetting refrigeration is another effective ways of realizing the all-weather cooling with the cold-working of voltage contraction.Publication number is that the patent of invention of CN 1995869A discloses a kind of " solar energy jetting and speed-variable compression integrated refrigeration device ", and solar energy strengthens injection refrigerating system and speed change compression refrigerating system shared evaporimeter, variable speed compressor and adjustable condenser in this device; When solar energy was enough to drive injection refrigerating system, system moved to strengthen the ejector refrigeration mode, has improved the coefficient of performance of injection refrigerating system; When solar energy is not enough, move by efficient speed change compression-type refrigeration mode.Publication number is that the patent of invention of CN 101270935A discloses a kind of " solar injection electric compression heat pump combined air-conditioning unit ", electric compression heat pump air-conditioning system and necessary valve are set up in basis at conventional solar energy energy injection refrigerating system, determine the start and stop of spraying system and electric compression heat pump air-conditioning system according to air conditioner load needs and solar radiation situation, by the flow process of valve switching controls water system, make this unit supply the cold-peace heat supply to air conditioner user.China Patent Publication No. is that the patent of invention of CN 102072541A discloses a kind of " cool-storage type solar energy jetting-compression combined refrigeration unit ", link to each other by Intermediate Heat Exchanger between injection refrigerating system and the compression refrigerating system, and cold-storage device and corresponding by-pass valve control are set in the circulation line of compressibility; Unit switches between solar energy jetting-compression (namely spraying the compression overlapping) compound cold-storage operational mode and independent compression cold-storage mode of operation according to the needs of air conditioner load and the concrete condition of solar radiation.

Yet solar energy jetting refrigeration, solar energy strengthen in ejector refrigeration, solar energy jetting and the compression cascade refrigeration method, and what wherein injection refrigerating system was born is the condensation load of the compression refrigerating system in whole cooling loads or the injection compression cascade refrigeration device.Sufficient at solar energy, occurrence temperature is higher than a certain temperature, when injection refrigerating system can satisfy the condensation load of compression refrigerating system in whole cooling loads or the cascade refrigeration device, the injection refrigerating system operation; The solar energy irradiation level is not enough, occurrence temperature is lower than said temperature, when enough refrigerating capacity can't be provided, the solar energy jetting refrigeration system quits work, can only adopt voltage compressing refrigeration system independence cooling this moment.

Summary of the invention

In order to improve solar energy utilization ratio, in the abundant area of solar energy or in the time period of solar energy deficiency, can utilize solar energy, the invention provides a kind of cold storage solar energy jetting and compression coupling refrigerating apparatus.

To achieve these goals, the technical solution used in the present invention is a kind of cold storage solar energy jetting and compression coupling refrigerating apparatus, comprises cold storage solar energy jetting and compression coupling refrigeration system and compression refrigerating system, it is characterized in that:

Described cold storage solar energy jetting is by ejector refrigeration loop, compression refrigeration circuits, solar heat water loop with compression coupling refrigeration system and holds and release cold loop and consist of; After described ejector refrigeration loop was the fluid-mixing outlet and the connection of ejector refrigeration condenser of coupling refrigeration injector, the one tunnel was communicated with the driving fluid entrance of coupling refrigeration expansion valve, devaporizer and coupling refrigeration injector successively; Another road is communicated with the Working-fluid intaking of generator and coupling refrigeration injector after by the coupling refrigeration working medium pump successively; Described compression refrigeration circuits is the entrance that the outlet of compressor is communicated with compression refrigeration condenser, three-way diverter valve Ta, devaporizer, three-way diverter valve Tb, compression refrigeration expansion valve, evaporimeter and compressor successively; The outlet that described solar heat water loop is solar thermal collector is communicated with the entrance of generator and coupling refrigeration heat-exchanger pump and solar thermal collector successively; Describedly hold that to release cold loop be the upper entrance that the air-conditioning water return pipeline is communicated with the cold-storage tank, the top export pipeline of cold-storage tank is divided into two-way after being communicated with successively charge cycle pump, evaporimeter: the control valve of leading up to is communicated with the bottom entrance of cold-storage tank, another road is communicated with the export pipeline of releasing cold circulating pump after by check-valves, and the entrance pipe of releasing cold circulating pump is communicated with the lower part outlet of cold-storage tank;

Described compression refrigerating system is the entrance that the outlet of compressor is communicated with compression refrigeration condenser, three-way diverter valve Ta and Tb, compression refrigeration expansion valve, evaporimeter and compressor successively.

In technique scheme, described additional technology is that the flow of charge cycle pump is to release 1 ~ 2 times of cold pump flow; The charge cycle pump all is speed-variable pump with releasing cold circulating pump; Cold storage solar energy jetting-compression coupling refrigeration system is solar energy irradiance 〉=100W/m 2The time cooling and cold-storage, solar energy irradiance<100W/m 2Release cold during perhaps without solar radiation; Compression refrigerating system is solar energy irradiance<100W/m 2Perhaps without solar radiation, and cold storage capacity be can not meet consumers' demand the time, independent cooling.

A kind of cold storage solar energy jetting provided by the present invention and compression coupling refrigerating apparatus, compared with prior art, advantage and good effect that it has are:

(1) in the abundant area of solar energy or in the time period of solar energy deficiency, as solar energy irradiation level 〉=100W/m 2The time, this device can utilize solar energy to come refrigeration and cold accumulation;

(2) heat that utilizes solar radiation to provide freezes, and when its refrigerating capacity is higher than the demand of user's cooling, when installing as user's cooling, stores the cold that has more part; Extremely weak or during without solar radiation, the cold that stores in the device discharges, and is user's cooling, installs more energy-conservation more than 10% than voltage compressing refrigeration system when solar energy.

(3) charge cycle pump and release cold circulating pump and adopt speed-variable pump according to regulating cold-storage or release cold a little less than the load of air conditioner user and the solar energy intensively, is realized energy-conservation when meeting consumers' demand.

(4) the abundant district of the abundant district of solar energy resources and solar energy resources, this device can adapt to local solar energy resources situation with the solar energy jetting refrigeration system or after solar energy jetting-the compression cascade refrigeration system is compound, improves solar energy utilization ratio.

Description of drawings

Fig. 1 is the cold storage solar energy jetting of the present invention and the first structural representation that compresses coupling refrigerating apparatus.

Fig. 2 is the cold storage solar energy jetting of the present invention and the second structural representation that compresses coupling refrigerating apparatus.

Fig. 3 is the structural representation of the cold storage solar energy jetting of the present invention and the cold storage solar energy jetting that compresses coupling refrigerating apparatus the second structure embodiment-compression cascade refrigeration system.

Fig. 4 is the structural representation of the cold storage solar energy jetting of the present invention and the cold storage solar energy jetting that compresses coupling refrigerating apparatus the second structure embodiment-compression coupling refrigeration system.

Fig. 5 is the cold storage solar energy jetting of the present invention and the compression refrigerating system structural representation that compresses coupling refrigerating apparatus the second structure embodiment.

Among the figure: 1-coupling refrigeration injector, 2-ejector refrigeration condenser, 3-coupling refrigeration expansion valve, 4-coupling refrigeration working medium pump, 5-generator, 6-solar thermal collector, 7-coupling refrigeration heat-exchanger pump, 8-compressor, 9-compression refrigeration condenser, the 10-devaporizer, 11-compression refrigeration expansion valve, 12-evaporimeter, 13-cold-storage tank, 14-charge cycle pump, 15-releases cold circulating pump, the 16-control valve, the 17-check-valves, 18-cascade refrigeration injector, 19-evaporative condenser, 20-cascade refrigeration expansion valve, 21-cascade refrigeration working medium pump, 22-cascade refrigeration heat-exchanger pump, Ta, Tb, Tc, the Td-three-way diverter valve, I, II, III, IV-transfer valve.

The specific embodiment

The below makes further instruction to the specific embodiment of the present invention:

Embodiment 1

Such as Fig. 1, implement cold storage solar energy jetting of the present invention and the first structure of compressing coupling refrigerating apparatus, comprise solar energy jetting-compression coupling refrigeration system and compression refrigerating system; Divide from the loop of the circulation of fluid, device comprises ejector refrigeration agent loop and compressed refrigerant loop, solar heat water loop and holds and release cold loop, wherein:

The concrete annexation in ejector refrigeration agent loop is as follows: the export pipeline of generator 5 is communicated with the Working-fluid intaking of coupling refrigeration injector 1; The fluid-mixing outlet of coupling refrigeration injector 1 is communicated with the entrance of ejector refrigeration condenser 2; The export pipeline of ejector refrigeration condenser 2 is divided into two-way: the one tunnel with after coupling refrigeration working medium pump 4 is communicated with, and is communicated with the entrance of generator 5; Behind another road process coupling refrigeration expansion valve 3, be communicated with the ejector refrigeration agent entrance of devaporizer 10, the ejector refrigeration agent outlet of devaporizer 10 is communicated with the driving fluid entrance of coupling refrigeration injector 1.

The concrete annexation in compressed refrigerant loop is as follows: be communicated with three-way diverter valve Ta behind the export pipeline process compression refrigeration condenser 9 of compressor 8, then be divided into two-way: the one tunnel through behind the devaporizer 10, be communicated with the main tube end b1 of three-way diverter valve Tb, another road is communicated with the Zhi Guanduan b3 of three-way diverter valve Tb; The main tube end b2 of three-way diverter valve Tb is communicated with the entrance of compression refrigeration expansion valve 11, evaporimeter 12, compressor 8 successively by pipeline.

The concrete annexation of solar heat water loop is as follows: the outlet of solar thermal collector 6 is communicated with coupling refrigeration heat-exchanger pump 7 after being communicated with generator 5, and then the entrance with solar thermal collector 6 is communicated with.

It is as follows to hold the concrete annexation of releasing cold loop: the air-conditioning return pipe is communicated with the upper entrance of cold-storage tank 13, after the top outlet of cold-storage tank 13 is communicated with charge cycle pump 14, evaporimeter 12 successively, be divided into two-way, the control valve 16 of leading up to is communicated with the bottom entrance of cold-storage tank 13, another road is communicated with the export pipeline of releasing cold circulating pump 15 afterwards by check-valves 17, and the entrance pipe of releasing cold circulating pump 15 is communicated with the lower part outlet of cold-storage tank 13.

Embodiment 2

Such as Fig. 2, implement a kind of cold storage solar energy jetting of the present invention and the second structure of compressing coupling refrigerating apparatus, namely compound the first structure of this device and solar energy jetting-compression cascade refrigeration system.Compound rear device comprises cold storage solar energy jetting-compression cascade refrigeration system, cold storage solar energy jetting-compression coupling refrigeration system and compression refrigerating system; Divide from the loop of the circulation of fluid, device comprises ejector refrigeration agent loop and compressed refrigerant loop, solar heat water loop and holds and release cold loop, wherein:

The concrete annexation in ejector refrigeration agent loop is as follows: the export pipeline of generator 5 is divided into two-way, after the first via process transfer valve I, is communicated with the Working-fluid intaking of cascade refrigeration injector 18; The second the tunnel through after the transfer valve II, is communicated with the Working-fluid intaking of coupling refrigeration injector 1; After the fluid-mixing export pipeline of cascade refrigeration injector 18 and the fluid-mixing export pipeline of coupling refrigeration injector 1 merge into one the tunnel, be communicated with the entrance of ejector refrigeration condenser 2; The export pipeline of ejector refrigeration condenser 2 is divided into two-way, and one the tunnel with after cascade refrigeration working medium pump 21 parallel with one another and coupling refrigeration working medium pump 4 are communicated with, and the entrance with generator 5 is communicated with again; Another road is divided into two branch roads, after the first branch road passes through transfer valve III, cascade refrigeration expansion valve 20 successively, be communicated with the ejector refrigeration agent entrance of evaporative condenser 19, the ejector refrigeration agent outlet of evaporative condenser 19 is communicated with the driving fluid entrance of cascade refrigeration injector 18; After the second branch road passes through transfer valve IV, coupling refrigeration expansion valve 3 successively, be communicated with the ejector refrigeration agent entrance of devaporizer 10, the ejector refrigeration agent outlet of devaporizer 10 is communicated with the driving fluid entrance of coupling refrigeration injector 1 again.

The concrete annexation in compressed refrigerant loop is as follows: be divided into two-way behind the export pipeline process three-way diverter valve Tc of compressor 8, be communicated with the Zhi Guanduan d3 of three-way diverter valve Td behind the first via process compression refrigeration condenser 9; Be communicated with the main tube end d1 of three-way diverter valve Td behind the second tunnel process evaporative condenser 19; The main tube end d2 of three-way diverter valve Td by pipeline be divided into two-way after three-way diverter valve Ta is communicated with, the one tunnel is communicated with the main tube end b1 of three-way diverter valve Tb through behind the devaporizer 10, another road is communicated with the Zhi Guanduan b3 of three-way diverter valve Tb; The main tube end b2 of three-way diverter valve Tb is communicated with the entrance of compression refrigeration expansion valve 11, evaporimeter 12, compressor 8 successively by pipeline.

The concrete annexation of solar heat water loop is as follows: after the outlet of solar thermal collector 6 is communicated with generator 5, be communicated with coupling refrigeration heat-exchanger pump 7 and cascade refrigeration heat-exchanger pump 22 parallel with one another, then the entrance with solar thermal collector 6 is communicated with.

It is as follows to hold the concrete annexation of releasing cold loop: the air-conditioning return pipe is communicated with the upper entrance of cold-storage tank 13, after the top export pipeline of cold-storage tank 13 is communicated with charge cycle pump 14, evaporimeter 12 successively, be divided into two-way, the control valve 16 of leading up to is communicated with the bottom entrance of cold-storage tank 13, another road is communicated with the export pipeline of releasing cold circulating pump 15 afterwards by check-valves 17, and the entrance pipe of releasing cold circulating pump 15 is communicated with the lower part outlet of cold-storage tank 13.

The below is to further specifying the specific embodiment of the present invention by specific embodiments:

The solar energy irradiation level is carried out classification: sufficient (〉=400W/m 2), weak (100 ~ 400W/m 2), extremely weak (<100W/m 2).As solar energy irradiation level 〉=400W/m 2The time, cold storage solar energy jetting-compression cascade refrigeration system moves in Gong Leng cold-storage mode in the device; As solar energy irradiation level 〉=100W/m 2, and<400W/m 2The time, cold storage solar energy jetting in the device-compression coupling refrigeration system moves in Gong Leng cold-storage mode; As solar energy irradiation level<100W/m 2The time, device moves with releasing cold way; As solar energy irradiation level<100W/m 2, and the cold that discharges be can not meet consumers' demand the time, compression refrigerating system independence cooling.

In the North China, belong in the scope in the abundant district of solar energy resources, this device is under summer all-weather ruuning situation, can save energy more than 33% than the simple voltage compressing refrigeration system that adopts, adopt ejector refrigeration, solar energy to adopt the system of electric compression refrigeration to can save energy more than 16% when not enough when more sufficient than employing solar energy.

(1) cold storage solar energy jetting-compression cascade refrigeration system.The structural relation of this system that represents with heavy line among Fig. 3.This system is by ejector refrigeration loop, compression refrigeration circuits, solar heat water loop and hold and release cold loop and consist of.The structural relation in ejector refrigeration loop is: after the fluid-mixing outlet of cascade refrigeration injector 2 and ejector refrigeration condenser 2 are communicated with, pipeline is divided into two-way, one the tunnel be communicated with successively transfer valve III, cascade refrigeration expansion valve 20, evaporative condenser 19 after, be communicated with the driving fluid entrance of cascade refrigeration injector 18; Another road by cascade refrigeration working medium pump 21 after, be communicated with successively generator 5 and transfer valve I, then the Working-fluid intaking with cascade refrigeration injector 18 is communicated with.The structural relation of compression refrigeration circuits is: the export pipeline of compressor 8 is successively through being communicated with the entrance of compressor 8 behind the b3 end of the a1 end of the put-through channel of the put-through channel of three-way diverter valve Tc, evaporative condenser 19, three-way diverter valve Td, three-way diverter valve Ta and a3 end, three-way diverter valve Tb and b2 end, compression refrigeration expansion valve 11, the evaporimeter 12.The structural relation of solar heat water loop is: the outlet of solar thermal collector 6 is communicated with cascade refrigeration heat-exchanger pump 22 after being communicated with generator 5, and then the entrance with solar thermal collector 6 is communicated with; Holding the structural relation of releasing cold loop is: the air-conditioning return pipe is communicated with the upper entrance of cold-storage tank 13, after the top outlet of cold-storage tank 13 is communicated with charge cycle pump 14, evaporimeter 12 successively, be divided into two-way, the control valve 16 of leading up to is communicated with cold-storage tank 13 bottom entrances, another road is communicated with the export pipeline of releasing cold circulating pump 15 afterwards by check-valves 17, and the entrance pipe of releasing cold circulating pump 15 is communicated with the lower part outlet of cold-storage tank 13.

The implementation method of above-mentioned cold storage solar energy jetting-compression cascade refrigeration system is as follows:

1, as solar energy irradiation level 〉=400W/m 2The time, transfer valve I, III are opened, and transfer valve II, IV are closed; The put-through channel of three-way diverter valve Tc, Td is opened, the c3 of bypass passageways, d3 end is closed; The a1 of three-way diverter valve Ta and a3 end are opened, the a2 end is closed, and the b2 of three-way diverter valve Tb and b3 end are opened, the b1 end is closed; Cascade refrigeration working medium pump 21, cascade refrigeration heat-exchanger pump 22 and 14 operations of charge cycle pump, coupling refrigeration working medium pump 4, coupling refrigeration heat-exchanger pump 7 and release cold circulating pump 15 and be in halted state.At this moment, move in Gong Leng cold-storage mode.

To the ejector refrigeration loop: cold-producing medium absorbs heat in generator 5 after evaporation becomes high temperature and high pressure steam, enters cascade refrigeration injector 18 as working steam; Working steam after the nozzle acceleration and pressure decrease of cascade refrigeration injector 18, the refrigerant vapour in the injection evaporative condenser 19, the two mixes supercharging in cascade refrigeration injector 18; Enter ejector refrigeration condenser 2 from cascade refrigeration injector 18 refrigerant vapour out, be condensed into liquid refrigerant; By ejector refrigeration condenser 2 liquid refrigerant out be divided into two tunnel, one road cold-producing medium by cascade refrigeration working medium pump 21 pressurization after, enter in the generator 5, again heating evaporation; Another road cold-producing medium enters reducing pressure by regulating flow in the cascade refrigeration expansion valve 20, after enter in the evaporative condenser 19 heat that absorbs compressed refrigerant, be evaporated to low-pressure steam, be inhaled in the cascade refrigeration injector 18, finish circulation.

To compression refrigeration circuits: after coming low-temperature low-pressure refrigerant steam in the flash-pot 12 through compressor 8 compressions, increasing temperature and pressure enters in the evaporative condenser 19 and is condensed into liquid refrigerant; Cold-producing medium from evaporative condenser 19 flows out behind compressed refrigeration expansion valve 11 reducing pressure by regulating flows, enters evaporation in the evaporimeter 12, absorbs heat in the refrigerating medium, realizes the refrigeration purpose.

To the solar heat water loop: after cooled dose of heat absorption of the hot water in the generator 5, send in the solar thermal collector 6 after the heating through cascade refrigeration circulating pump 22, again enter in the generator 5, so circulation realizes the thermal-arrest generating process.

Release cold loop to holding: the air-conditioning backwater enters cold-storage tank 13, the water of higher temperature enters after charge cycle pump 14 pressurization in the evaporimeter 12 behind the absorbing and cooling temperature in the cold-storage tank 13, a part is supplied with the user behind check-valves 17, another part enters in the cold-storage tank 13 behind control valve 16 and stores, and control valve 16 is regulated the cold water flow ratio that enters cold-storage tank 13 and user according to the cold of the needs of air conditioner user.

2, as solar energy irradiation level<100W/m 2The time, only release cold circulating pump 15 and cold-storage tank 13 in the whole device and be in running status.

User's air-conditioning backwater enters cold-storage tank 13 from cold-storage tank 13 upper entrances, releases cold circulating pump 15 and takes out cold water from the lower part outlet of cold-storage tank 13 and supply water as air-conditioning and give the user, and the air-conditioning backwater after user's heat absorption returns cold-storage tank 13 tops.

(2) cold storage solar energy jetting-compression coupling refrigeration system.The structural relation of this system that represents with heavy line among Fig. 4.This system is by ejector refrigeration loop, compression refrigeration circuits, solar heat water loop and hold and release cold loop and consist of.

The structural relation in ejector refrigeration loop is: after the fluid-mixing outlet of coupling refrigeration injector 1 and ejector refrigeration condenser 2 are communicated with, pipeline is divided into two-way, one the tunnel is communicated with successively by behind transfer valve IV, coupling refrigeration expansion valve 3, the devaporizer 10, is connected with the driving fluid entrance of coupling refrigeration injector 1; Another road is communicated with generator 5 and transfer valve II successively by behind the coupling refrigeration working medium pump 4, and then the Working-fluid intaking with coupling refrigeration injector 1 is communicated with.The structural relation of compression refrigeration circuits is: the export pipeline of compressor 8 holds through the d3 of the c1 end of three-way diverter valve Tc and c3 end, compression refrigeration condenser 9, three-way diverter valve Td successively and d2 holds, be connected with the entrance of compressor 8 behind the put-through channel of the put-through channel of three-way diverter valve Ta, devaporizer 10, three-way diverter valve Tb, compression refrigeration expansion valve 11, evaporimeter 12.The structural relation of solar heat water loop is: after the export pipeline of solar thermal collector 6 is communicated with generator 5, coupling refrigeration heat-exchanger pump 7 successively, be communicated with the entrance of solar thermal collector 6; Holding the structural relation of releasing cold loop is: the air-conditioning return pipe is communicated with the upper entrance of cold-storage tank 13, after the top export pipeline of cold-storage tank 13 is communicated with charge cycle pump 14, evaporimeter 12 successively, be divided into two-way, the control valve 16 of leading up to is communicated with cold-storage tank 13 bottom entrances, another road is communicated with the export pipeline of releasing cold circulating pump 15 afterwards by check-valves 17, and the entrance pipe of releasing cold circulating pump 15 is communicated with the lower part outlet of cold-storage tank 13.

The implementation method of above-mentioned solar energy jetting-compression coupling refrigeration system is as follows:

1, as solar energy irradiation level 〉=100W/m 2And<400W/m 2The time, transfer valve II, IV are opened, and transfer valve I, III are closed; The c1 of three-way diverter valve Tc and c3 end are opened, the c2 end is closed, and the d3 of three-way diverter valve Td and d2 end are opened, the d1 end is closed, and the put-through channel of three-way diverter valve Ta, Tb is opened, bypass passageways is closed; Coupling refrigeration working medium pump 4, coupling refrigeration heat-exchanger pump 7 and 14 operations of charge cycle pump, cascade refrigeration working medium pump 21, cascade refrigeration heat-exchanger pump 22 and release cold circulating pump 15 and be in halted state.

To the ejector refrigeration loop: cold-producing medium absorbs heat in generator 5 after evaporation becomes high temperature and high pressure steam, enter coupling refrigeration injector 1 as working steam, working steam is after the nozzle acceleration and pressure decrease of coupling refrigeration injector 1, refrigerant vapour in the injection devaporizer 10, the two mixes supercharging in coupling refrigeration injector 1; Enter ejector refrigeration condenser 2 from coupling refrigeration injector 1 refrigerant vapour out, be condensed into liquid refrigerant; After being divided into the pressurization of two tunnel, one route coupling refrigeration working medium pump 4 by ejector refrigeration condenser 2 liquid refrigerant out, enter in the generator 5, again heating evaporation; Another road cold-producing medium enters reducing pressure by regulating flow in the coupling refrigeration expansion valve 3, then enters the heat that absorbs compressed refrigerant in the devaporizer 10, is evaporated to low-pressure steam, is inhaled in the coupling refrigeration injector 1, finishes circulation.

To compression refrigeration circuits: after coming low-temperature low-pressure refrigerant steam in the flash-pot 12 through compressor 8 compressions, increasing temperature and pressure enters in the compression refrigeration condenser 9 and is condensed into liquid refrigerant; From the cold-producing medium that compression refrigeration condenser 9 flows out, enter in the devaporizer 10 excessively coldly, behind compressed refrigeration expansion valve 11 reducing pressure by regulating flows, enter evaporation in the evaporimeter 12 again, absorb heat in the refrigerating medium, realize the refrigeration purpose.

To the solar heat water loop: after the hot water release heat in the generator 5, be coupled refrigeration heat-exchanger pump 7 and send in the solar thermal collector 6 after the heating, again enter in the generator 5, so circulation.

Release cold loop to holding: the air-conditioning backwater enters cold-storage tank 13, the water of higher temperature enters after charge cycle pump 14 pressurization in the evaporimeter 12 behind the absorbing and cooling temperature in the cold-storage tank 13, a part is supplied with the user behind check-valves 17, another part enters in the cold-storage tank 13 behind control valve 16 and stores, and control valve 16 is regulated the cold water flow ratio that enters cold-storage tank 13 and user according to the cold of air conditioner user needs.

2, as solar energy irradiation level<100W/m 2The time, only release cold circulating pump 15 and cold-storage tank 13 in the whole device and be in running status.

User's air-conditioning backwater enters cold-storage tank 13 from cold-storage tank 13 upper entrances, releases cold circulating pump 15 and takes out cold water from the lower part outlet of cold-storage tank 13 and supply water as air-conditioning and give the user, and the air-conditioning backwater after user's heat absorption returns cold-storage tank 13 tops.

(3) compression refrigerating system.The structural relation of this system that represents with heavy line among Fig. 5: the export pipeline of compressor 8 is after the b3 of the a1 of the d3 of the c1 by three-way diverter valve Tc and c3 end, compression refrigeration condenser 9, three-way diverter valve Td and d2 end, three-way diverter valve Ta and a3 end, three-way diverter valve Tb and b2 hold successively, be communicated with compression refrigeration expansion valve 11 and evaporimeter 12, then the entrance with compressor 12 is communicated with.

The implementation method of above-mentioned compression refrigerating system is as follows:

As solar energy irradiation level<100W/m 2, and the cold that stores of cold-storage tank 13 be can not satisfy the air conditioner user needs time, and the c1 of three-way diverter valve Tc and c3 end are opened, the c2 end is closed, and the d3 of three-way diverter valve Td and d2 end are opened, the d1 end is closed; The a1 of three-way diverter valve Ta and a3 end is opened, the a2 end is closed, and the b3 of three-way diverter valve Tb and b2 end are opened, the b1 end is closed, and control valve 16 cuts out, and it is out of service to release cold circulating pump 15.

After coming low-temperature low-pressure refrigerant steam process compressor 8 compressions in the flash-pot 12, increasing temperature and pressure, then enter 9 condensations of compression refrigeration condenser, condensed liquid refrigerant enters compression refrigeration expansion valve 11, behind compressed refrigeration expansion valve 11 reducing pressure by regulating flows, enter evaporation in the evaporimeter 12, absorb heat in the refrigerating medium, realize the purpose of refrigeration.

Claims (5)

1. a cold storage solar energy jetting and compression coupling refrigerating apparatus comprise cold storage solar energy jetting-compression coupling refrigeration system and compression refrigerating system; It is characterized in that:
Described cold storage solar energy jetting-compression coupling refrigeration system is by ejector refrigeration loop, compression refrigeration circuits, solar heat water loop and holds and release cold loop and consist of;
Described ejector refrigeration loop is that one the tunnel was communicated with the driving fluid entrance of coupling refrigeration expansion valve (3), devaporizer (10) and coupling refrigeration injector (1) successively after the outlet of coupling refrigeration injector (1) fluid-mixing and ejector refrigeration condenser (2) were communicated with; Another road is communicated with the Working-fluid intaking of generator (5) and coupling refrigeration injector (1) after by coupling refrigeration working medium pump (4) successively; Described compression refrigeration circuits is the entrance that the outlet of compressor (8) is communicated with compression refrigeration condenser (9), three-way diverter valve I (Ta), devaporizer (10), three-way diverter valve II (Tb), compression refrigeration expansion valve (11), evaporimeter (12) and compressor (8) successively; Described solar heat water loop is the entrance that the outlet of solar thermal collector (6) is communicated with generator (5) and coupling refrigeration heat-exchanger pump (7) and solar thermal collector (6) successively; Describedly hold that to release cold loop be the upper entrance that user's air-conditioning water return pipeline is communicated with cold-storage tank (13), the outlet of the top of cold-storage tank (13) is communicated with charge cycle pump (14) successively, evaporimeter is divided into two-way after (12): lead up to behind the control valve (16), be communicated with cold-storage tank (13) bottom entrance, another road is communicated with the export pipeline of releasing cold circulating pump (15) by behind the check-valves (17), and the entrance pipe of releasing cold circulating pump (15) is communicated with the lower part outlet of cold-storage tank (13);
Described compression refrigerating system is the entrance that the outlet of compressor (8) is communicated with compression refrigeration condenser (9), three-way diverter valve I (Ta), three-way diverter valve II (Tb), compression refrigeration expansion valve (11), evaporimeter (12) and compressor (8) successively.
2. as claimed in claim 1 cold storage solar energy jetting and compression coupling refrigerating apparatus, it is characterized in that: the flow of charge cycle pump (14) is to release 1 ~ 2 times of cold circulating pump (15) flow.
3. as claimed in claim 1 cold storage solar energy jetting and compression coupling refrigerating apparatus is characterized in that: charge cycle pump (14) and to release cold circulating pump (15) all be speed-variable pump.
As claimed in claim 1 cold storage solar energy jetting with the compression coupling refrigerating apparatus, it is characterized in that: described cold storage solar energy jetting with the compression coupling refrigerating apparatus at solar energy irradiance 〉=100W/m 2The time cooling and cold-storage, solar energy irradiance<100W/m 2The time release cold.
5. as claimed in claim 1 cold storage solar energy jetting and compression coupling refrigerating apparatus, it is characterized in that: described compression system coupling device for cooling is at solar energy irradiance<100W/m 2And when cold storage capacity can not be met consumers' demand, independent cooling.
CN 201210107924 2012-04-13 2012-04-13 Cold-storing type solar-energy spraying and compression coupling refrigerating device CN102635972B (en)

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CN106839095A (en) * 2017-01-05 2017-06-13 宁波奥克斯电气股份有限公司 The complementary air conditioner and heat pump unit of solar electrothermal and control method
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