CN102620468B - Solar jet-variable compression hybrid refrigeration system - Google Patents
Solar jet-variable compression hybrid refrigeration system Download PDFInfo
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Abstract
A solar jet-variable compression hybrid refrigeration system comprises a solar jet refrigeration system, a solar jet-variable compression cascade refrigeration system, a solar jet-variable compression coupling refrigeration system and a variable compression refrigeration system which are integrated; when solar radiation is intense, the solar jet refrigeration system operates; when solar radiation is higher than the medium level, the solar jet-variable compression cascade refrigeration system operates; when solar radiation is weak, the solar jet-variable compression coupling refrigeration system operates to sufficiently utilize part of the solar energy not utilized by the prior art, and when solar energy is extremely low or solar radiation does not exist, the variable compression refrigeration system in the system operates. The system can efficiently utilize solar energy at different levels according to the intensity of solar radiation, and sufficiently and effectively utilizes the solar energy resource.
Description
Technical field
The present invention relates to a kind of refrigerating plant, particularly relate to a kind ofly take solar energy and electric energy as injection and the compression combined refrigerating plant of driven by energy, 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 characteristics of energy-conserving and environment-protective 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, refrigeration structure commonly used 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 satisfies user's demand.Namely when solar energy is sufficient, 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 this refrigeration structure is not ideal.
Find through the literature search to prior art, unite the cooling that drives injection refrigerating system except adopting solar energy and auxiliary thermal source, adopting certain combining structure, is that the additional of solar energy jetting refrigeration is another effective refrigeration structure 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 in solar energy jetting-compression, namely sprays the compression overlapping according to the needs of air conditioner load and the concrete condition of solar radiation, switches between compound cold-storage operational mode and the independent compression cold-storage mode of operation.
Yet solar energy jetting refrigeration, solar energy strengthen in ejector refrigeration, solar energy jetting and the compression cascade refrigeration structure, and what injection refrigerating system was born is the condensation load of 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; Solar energy 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, not only when solar energy is enough to drive ejector refrigeration or spray compression cascade refrigeration operation, utilize solar energy, and solar energy is not enough, when ejector refrigeration or injection compression cascade system can not be met consumers' demand, also can utilize solar energy, its objective is provides a kind of solar energy jetting and the compression combined refrigerating plant of speed change.
To achieve these goals, the technical solution used in the present invention is a kind of solar energy jetting and the compression combined refrigerating plant of speed change, comprise the solar energy jetting refrigeration system, solar energy jetting and speed change compression cascade refrigeration system, solar energy jetting and speed change compression coupling refrigeration system, the speed change compression refrigerating system; It is characterized in that:
Described solar energy jetting refrigeration system is that one the tunnel was communicated with transfer valve IV, the first ejector refrigeration expansion valve, ejector refrigeration evaporimeter and independent cooling injector successively after independent cooling injector and ejector refrigeration condenser were communicated with; Another road is communicated with solar energy heating generator, transfer valve I and independent cooling injector by the first working medium pump and the second working medium pump;
Described solar energy jetting and speed change compression cascade refrigeration system are that solar energy jetting refrigerating circuit and speed change compression refrigeration circuits consist of; Its solar energy jetting refrigerating circuit is that one the tunnel was communicated with transfer valve V, the second ejector refrigeration expansion valve, evaporative condenser and cascade refrigeration injector successively after cascade refrigeration injector and ejector refrigeration condenser were communicated with; Another road is communicated with solar energy heating generator, transfer valve II and cascade refrigeration injector successively by the first working medium pump; Its speed change compression refrigeration circuits is that variable speed compressor is communicated with three-way diverter valve Ta, evaporative condenser, three-way diverter valve Tb, three-way diverter valve Tc, three-way diverter valve Td, compression refrigeration expansion valve, compression refrigeration evaporimeter and variable speed compressor successively;
Described solar energy jetting and speed change compression coupling refrigeration system are that solar energy jetting refrigerating circuit and speed change compression refrigeration circuits consist of; Its solar energy jetting refrigerating circuit is that one the tunnel was communicated with transfer valve VI, the 3rd ejector refrigeration expansion valve, devaporizer and coupling refrigeration injector successively after coupling refrigeration injector and ejector refrigeration condenser were communicated with; Another road is communicated with solar energy heating generator, transfer valve III and coupling refrigeration injector after by the second working medium pump successively; Its speed change compression refrigeration circuits is that variable speed compressor is communicated with three-way diverter valve Ta, compression refrigeration condenser, three-way diverter valve Tb and Tc, devaporizer, three-way diverter valve Td, compression refrigeration expansion valve, compression refrigeration evaporimeter and variable speed compressor successively;
Described speed change compression refrigerating system is that the speed change compression refrigeration circuits is that variable speed compressor is communicated with three-way diverter valve Ta, compression refrigeration condenser, three-way diverter valve Tb, three-way diverter valve Tc, three-way diverter valve Td, compression refrigeration expansion valve, compression refrigeration evaporimeter and variable speed compressor successively.
In technique scheme, described additional technology is that the ejector refrigeration condenser is unit-combination type; Described the first working medium pump is 1.5 ~ 3 times of the second working medium pump flow; The flow sum of described the first working medium pump and the second working medium pump equals the flow of solar energy jetting refrigeration system; Described solar energy jetting refrigeration system is at solar energy irradiance 〉=800W/m
2Shi Yunhang, described solar energy jetting and speed change compression cascade refrigeration system are at solar energy irradiance 〉=400W/m
2And＜800W/m
2Shi Yunhang, described solar energy jetting and speed change compression coupling refrigeration system are at solar energy irradiance 〉=100W/m
2And＜400W/m
2Shi Yunhang, described speed change compression refrigerating system is at solar energy irradiance＜100W/m
2Move during perhaps without solar radiation.
Realize a kind of solar energy jetting provided by the present invention and the compression combined refrigerating plant of speed change, compared with prior art, advantage and good effect that it has are as follows:
When (1) solar radiation is strong, the solar energy jetting refrigeration system operation that the mechanical performance coefficient is very high in this device; When solar radiation was higher than medium level, the mechanicalness coefficient was significantly higher than solar energy jetting and the operation of speed change compression cascade refrigeration system of voltage compressing refrigeration system in this device; When solar radiation is weak, the mechanical performance coefficient is apparently higher than solar energy jetting and the operation of speed change compression coupling refrigeration system of voltage compressing refrigeration system in this device, the part solar energy of failing in the prior art to utilize is taken full advantage of, and its mechanical performance coefficient ratio voltage compressing refrigeration system mechanical performance coefficient is high by 10%; Extremely weak or during without solar radiation when solar energy, speed change compression refrigerating system operation in the device; This device can efficiently utilize solar energy according to the intensity of solar radiation classification.
(2) share the equipment such as thermal-arrest generator, working medium pump, ejector refrigeration condenser, compressor, compression refrigeration evaporimeter, compression refrigeration condenser, compression refrigeration expansion valve in apparatus of the present invention, saved investment than setting up various systems separately.
(3) along with the variation of solar radiation, this device adopts working medium pump and the combination thereof of different flow, so that the changes in flow rate of the generator of flowing through has guaranteed each injector efficient operation under higher occurrence temperature, has effectively improved the coefficient of performance of system.
(4) ejector refrigeration and compression refrigeration refrigeration is independent separately, can adopt separately efficiently cold-producing medium operation.
Description of drawings
Fig. 1 is the compression combined refrigerating device structure schematic diagram of solar energy jetting of the present invention and speed change.
Fig. 2 is the structural representation under solar energy jetting of the present invention and the compression combined refrigerating plant embodiment of the speed change the first operational mode.
Fig. 3 is the structural representation under solar energy jetting of the present invention and the compression combined refrigerating plant embodiment of the speed change the second operational mode.
Fig. 4 is the structural representation under compression combined the third operational mode of refrigerating plant embodiment of solar energy jetting of the present invention and speed change.
Fig. 5 is the structural representation under the 4th kind of operational mode of the compression combined refrigerating plant embodiment of solar energy jetting of the present invention and speed change.
Among the figure: 1-independent cooling injector, 2-cascade refrigeration injector, 3-coupling refrigeration injector, 4-ejector refrigeration condenser, 5-the first ejector refrigeration expansion valve, 6-the second ejector refrigeration expansion valve, 7-the 3rd ejector refrigeration expansion valve, 8-ejector refrigeration evaporimeter, 9-evaporative condenser, the 10-devaporizer, 11-the first working medium pump, 12-the second working medium pump, 13-solar energy heating generator, 14-compression refrigeration condenser, 15-compression refrigeration expansion valve, 16-compression refrigeration evaporimeter, 17-variable speed compressor, I, II, III, IV, V, VI-transfer valve, Ta, Tb, Tc, Td-three-way diverter valve etc.
The specific embodiment
The below makes further instruction to the specific embodiment of the present invention:
Such as Fig. 1, implement a kind of solar energy jetting of the present invention and the compression combined refrigerating plant of speed change, comprise the solar energy jetting refrigeration system, solar energy jetting and speed change compression cascade refrigeration system, solar energy jetting and speed change compression coupling refrigeration system, the speed change compression refrigerating system; Divide from the loop of cold-producing medium circulation, apparatus of the present invention comprise ejector refrigeration agent loop and compressed refrigerant loop two parts, wherein:
The constituent relation in ejector refrigeration agent loop is that the export pipeline of solar energy generator 13 is divided into three the tunnel: after the first via process transfer valve I, be communicated with the Working-fluid intaking of independent cooling injector 1; The second the tunnel through after the transfer valve II, is communicated with the Working-fluid intaking of cascade refrigeration injector 2; After the Third Road process transfer valve III, be communicated with the Working-fluid intaking of coupling refrigeration injector 3; After the fluid-mixing export pipeline of the fluid-mixing export pipeline of independent cooling injector 1, the fluid-mixing export pipeline of cascade refrigeration injector 2 and coupling refrigeration injector 3 merges into one the tunnel, be communicated with the entrance of ejector refrigeration condenser 4; The export pipeline of ejector refrigeration condenser 4 is divided into two-way, and one the tunnel with after the first working medium pump 11 parallel with one another and the second working medium pump 12 are communicated with, and the arrival end with solar energy generator 13 is communicated with again; Another road is divided into three the tunnel: be communicated with the driving fluid entrance of the first ejector refrigeration expansion valve 5, ejector refrigeration evaporimeter 8 and independent cooling injector 1 successively after the first via process transfer valve IV; The second the tunnel successively through being communicated with the ejector refrigeration agent entrance of evaporative condenser 9 behind transfer valve V, the second ejector refrigeration expansion valve 6, and the ejector refrigeration agent outlet of evaporative condenser 9 is communicated with the driving fluid entrance of cascade refrigeration injector 2; Third Road pass through successively the transfer valve VI, with the 3rd ejector refrigeration expansion valve 7 after, be communicated with the ejector refrigeration agent entrance of devaporizer 10 again, the ejector refrigeration agent outlet of devaporizer 10 is communicated with the driving fluid entrance of coupling refrigeration injector 3.
In the compression combined refrigerating plant of solar energy jetting and speed change, the concrete annexation in compressed refrigerant loop is as follows: be divided into two-way behind the export pipeline process three-way diverter valve Ta of variable speed compressor 17: prop up pipe end b3 with three-way diverter valve Tb behind the first via process compression refrigeration condenser 14 and be communicated with; Be communicated with the main tube end b1 of three-way diverter valve Tb behind the second tunnel process evaporative condenser 9; The main tube end b2 of three-way diverter valve Tb by pipeline be divided into two-way after three-way diverter valve Tc is communicated with: the one tunnel is communicated with the main tube end d1 of three-way diverter valve Td through behind the devaporizer 10, and another road is communicated with the Zhi Guanduan d3 of three-way diverter valve Td; The main tube end d2 of three-way diverter valve Td is communicated with compression refrigeration expansion valve 15, compression refrigeration evaporimeter 16, variable speed compressor 17 successively by pipeline.
In the North China, belong in the scope in the abundant district of solar energy resources, device is under summer all-weather ruuning situation, can save energy more than 30% 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 15% when not enough when more sufficient than employing solar energy.
The solar energy irradiation level is carried out classification: strong (〉=800W/m
2), in (400 ~ 800W/m
2), weak (100 ~ 400W/m
2), extremely weak (＜100W/m
2), according to the variation of solar energy irradiation level, composite refrigerating device switches to corresponding refrigeration system operation.
Further specify the specific embodiment of the present invention below by specific embodiments:
(1) solar energy jetting refrigeration system.The structural relation of this system that represents with heavy line among Fig. 2: the outlet of the fluid-mixing of independent cooling injector 1 is with after ejector refrigeration condenser 4 is communicated with, be divided into two-way: the one tunnel is communicated with transfer valve IV, the first ejector refrigeration expansion valve 5, ejector refrigeration evaporimeter 8 successively, then is connected with the driving fluid entrance of independent cooling injector 1; Another road is communicated with solar energy heating generator 13 and transfer valve I successively by behind first working medium pump 11 and the second working medium pump 12 parallel with one another, and then the Working-fluid intaking with independent cooling injector 1 is connected.
The implementation method of above-mentioned solar energy jetting refrigeration system is as follows:
When the solar energy irradiation level at solar irradiance 〉=800W/m
2The time, transfer valve I, IV are opened, and transfer valve II, V, III, VI are closed, and the first working medium pump 11 and the second working medium pump 12 start simultaneously, the solar energy jetting refrigeration system independent operating in the device.
The cold-producing medium evaporation of in solar energy heating generator 13, absorbing heat, after becoming high temperature and high pressure steam, enter in the independent cooling injector 1 as working steam, after the nozzle acceleration and pressure decrease of independent cooling injector 1, injection sprays the refrigerant vapour in the refrigerating evaporator 8, and the two mixes supercharging in independent cooling injector 1; Enter ejector refrigeration condenser 4 from independent cooling injector 1 refrigerant vapour out, be condensed into liquid refrigerant; After being divided into two tunnel: one route the first working medium pump 11 and the pressurization of the second working medium pump 12 by ejector refrigeration condenser 4 liquid refrigerant out, enter in the solar energy heating generator 13, again heating evaporation; Another road cold-producing medium enters reducing pressure by regulating flow in the first ejector refrigeration expansion valve 5, and the cold-producing medium after the step-down absorbs the heat of refrigerating medium in ejector refrigeration evaporimeter 8, be evaporated to low pressure refrigerant vapor, is inhaled in the independent cooling injector 1, finishes kind of refrigeration cycle.
(2) solar energy jetting and speed change compression cascade refrigeration system.The structural relation of this system that represents with heavy line among Fig. 3.This system is made of solar energy jetting refrigerating circuit and speed change compression refrigeration circuits, and two loops are by evaporative condenser 9 phase overlappings.The structural relation of solar energy jetting refrigerating circuit is: after the fluid-mixing outlet of cascade refrigeration injector 2 and ejector refrigeration condenser 4 are communicated with, pipeline is divided into two-way: the one tunnel be communicated with successively transfer valve V, the second ejector refrigeration expansion valve 6, evaporative condenser 9 after, be communicated with the driving fluid entrance of cascade refrigeration injector 2; Another road is communicated with solar energy heating generator 13 and transfer valve II successively by behind the first working medium pump 11, and then the Working-fluid intaking with cascade refrigeration injector 2 is communicated with.The structural relation of speed change compression refrigeration circuits is: variable speed compressor 17 export pipelines are successively through being communicated with the entrance of variable speed compressor 17 behind the d3 end of the c1 end of the put-through channel of the put-through channel of three-way diverter valve Ta, evaporative condenser 9, three-way diverter valve Tb, three-way diverter valve Tc and c3 end, three-way diverter valve Td and d2 end, compression refrigeration expansion valve 15, the compression refrigeration evaporimeter 16.
The implementation method of above-mentioned solar energy jetting and speed change compression cascade refrigeration system is as follows:
As solar energy irradiation level 〉=400W/m
2And＜800W/m
2The time, transfer valve II, V are opened, and transfer valve I, IV, III, VI are closed; Three-way diverter valve Ta, Tb put-through channel are opened, a3, the b3 of bypass passageways end is closed; The c1 of three-way diverter valve Tc and c3 end are opened, the c2 end is closed, and the d2 of three-way diverter valve Td and d3 end are opened, the d1 end is closed; 11 operations of the first working medium pump, the second working medium pump 12 are in halted state.
To the solar energy jetting refrigerating circuit: cold-producing medium absorbs heat in solar energy heating generator 13 after evaporation becomes high temperature and high pressure steam, enters cascade refrigeration injector 2 as working steam; Working steam after the nozzle acceleration and pressure decrease of cascade refrigeration injector 2, the refrigerant vapour in the injection evaporative condenser 9, the two mixes supercharging in cascade refrigeration injector 2; Enter ejector refrigeration condenser 4 from cascade refrigeration injector 2 refrigerant vapour out, be condensed into liquid refrigerant; After being divided into the pressurization of two tunnel: one route the first working medium pump 11 by ejector refrigeration condenser 4 liquid refrigerant out, enter in the solar energy heating generator 13, again heating evaporation; Another road cold-producing medium enters reducing pressure by regulating flow in the second ejector refrigeration expansion valve 6, after enter in the evaporative condenser 9 heat that absorbs compressed refrigerant, be evaporated to low-pressure steam, be inhaled in the cascade refrigeration injector 2, finish circulation.
To the speed change compression refrigeration circuits: from the low-temperature low-pressure refrigerant steam in the compression refrigeration evaporimeter 16 through compressor 17 compressions after, increasing temperature and pressure enters in the evaporative condenser 9 and is condensed into liquid refrigerant; Cold-producing medium from evaporative condenser 9 flows out behind compressed refrigeration expansion valve 15 reducing pressure by regulating flows, enters evaporation in the compression refrigeration evaporimeter 16, absorbs heat in the refrigerating medium, realizes the refrigeration purpose.
(3) solar energy jetting and speed change compression coupling refrigeration system.The structural relation of this system that represents with heavy line among Fig. 4.This system is made of solar energy jetting refrigerating circuit and speed change compression refrigeration circuits, and two loops are coupled by devaporizer 10.The structural relation of solar energy jetting refrigerating circuit is: the outlet of the fluid-mixing of coupling refrigeration injector 3 is with after ejector refrigeration condenser 4 is communicated with, pipeline is divided into two-way: the one tunnel be communicated with successively transfer valve VI, the 3rd ejector refrigeration expansion valve 7, devaporizer 10 after, be communicated with the driving fluid entrance of coupling refrigeration injector 3; After another road is communicated with the second working medium pump 12, solar energy heating generator 13 and transfer valve III successively, be communicated with the Working-fluid intaking of coupling refrigeration injector 3; The structural relation of speed change compression refrigeration circuits is: the export pipeline of variable speed compressor 17 successively b3 and the b2 of the a1 by three-way diverter valve Ta and a3 end, compression refrigeration condenser 14, three-way diverter valve Tb is held, then the put-through channel by three-way diverter valve Tc is communicated with devaporizer 10, again behind the put-through channel of three-way diverter valve Td, be communicated with compression refrigeration expansion valve 15 and compression refrigeration evaporimeter 16, then the entrance with variable speed compressor 17 is communicated with.
The implementation method of above-mentioned solar energy jetting and speed change compression coupling refrigeration system is as follows:
When the solar energy irradiation level at solar irradiance degree 〉=100W/m
2And＜400W/m
2The time, transfer valve III, VI are opened, and transfer valve I, IV, II, V are closed; The a1 of three-way diverter valve Ta and a3 end are 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 the put-through channel of three-way diverter valve Tc, Td is opened, bypass passageways is closed; The second working medium pump 12 is in running status, and the first working medium pump 11 is out of service.
To the solar energy jetting refrigerating circuit: cold-producing medium absorbs heat in solar energy heating generator 13 after evaporation becomes high temperature and high pressure steam, enter the nozzle acceleration and pressure decrease of coupling refrigeration injector 3 as working steam after, refrigerant vapour in the injection devaporizer 10, the two mixes supercharging in coupling refrigeration injector 3; Coupling refrigeration injector 3 refrigerant vapour out enters ejector refrigeration condenser 4, is condensed into liquid refrigerant; After the liquid refrigerant that is flowed out by ejector refrigeration condenser 4 is divided into 12 pressurizations of two tunnel: one route the second working medium pump, enter in the solar energy heating generator 13, again heating evaporation; Another road enters reducing pressure by regulating flow in the 3rd ejector refrigeration expansion valve 7, and the cold-producing medium after the step-down absorbs the heat of compressed refrigerant in devaporizer 10, be evaporated to low pressure refrigerant vapor after, be inhaled in the coupling refrigeration injector 3, finish circulation.
To the speed change compression refrigeration circuits: from the low-temperature low-pressure refrigerant steam in the compression refrigeration evaporimeter 16 through compressor 17 compressions after, increasing temperature and pressure, after this steam enters and is condensed into liquid state in the compression refrigeration condenser 14, enter in the devaporizer 10 and be cooled to supercooled state, then enter evaporation in the compression refrigeration evaporimeter 16 behind compressed refrigeration expansion valve 15 reducing pressure by regulating flows, absorb heat in the refrigerating medium, realize the refrigeration purpose.
(4) speed change compression refrigerating system.The structural relation of this system that represents with heavy line among Fig. 5: the export pipeline of variable speed compressor 17 is after the d3 of the c1 of the b3 of the a1 by three-way diverter valve Ta and a3 end, compression refrigeration condenser 14, three-way diverter valve Tb and b2 end, three-way diverter valve Tc and c3 end, three-way diverter valve Td and d2 hold successively, be communicated with compression refrigeration expansion valve 15 and compression refrigeration evaporimeter 16, then the entrance with variable speed compressor 17 is communicated with.
The implementation method of above-mentioned speed change compression refrigerating system is as follows:
When the solar energy irradiation level at solar irradiance＜100W/m
2Or during without solar radiation, the a1 of three-way diverter valve Ta and a3 end are 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; 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.
After 17 compressions of the process of the low-temperature low-pressure refrigerant steam in the compression refrigeration evaporimeter 16 compressor, increasing temperature and pressure, after this steam enters 14 condensations of compression refrigeration condenser, enter compression refrigeration expansion valve 15, cold-producing medium behind compressed refrigeration expansion valve 15 reducing pressure by regulating flows enters evaporation in the compression refrigeration evaporimeter 16, absorb heat in the refrigerating medium, realize the refrigeration purpose.
Claims (5)
1. a solar energy jetting and the compression combined refrigerating plant of speed change comprise the solar energy jetting refrigeration system, solar energy jetting and speed change compression cascade refrigeration system, and solar energy jetting compresses coupling refrigeration system, speed change compression refrigerating system with speed change; It is characterized in that:
Described solar energy jetting refrigeration system is that one the tunnel was communicated with transfer valve IV, the first ejector refrigeration expansion valve (5), ejector refrigeration evaporimeter (8) and independent cooling injector (1) successively after independent cooling injector (1) and ejector refrigeration condenser (4) were communicated with; Another road is communicated with solar energy heating generator (13), transfer valve I and independent cooling injector (1) by the first working medium pump (11) and the second working medium pump (12);
Described solar energy jetting and speed change compression cascade refrigeration system are to be made of solar energy jetting refrigerating circuit and speed change compression refrigeration circuits; Its solar energy jetting refrigerating circuit is that one the tunnel was communicated with transfer valve V, the second ejector refrigeration expansion valve (6), evaporative condenser (9) and cascade refrigeration injector (2) successively after cascade refrigeration injector (2) and ejector refrigeration condenser (4) were communicated with; Another road is communicated with solar energy heating generator (13), transfer valve II and cascade refrigeration injector (2) after by the first working medium pump (11) successively; Its speed change compression refrigeration circuits is that variable speed compressor (17) is communicated with three-way diverter valve Ta, evaporative condenser (9), three-way diverter valve Tb, three-way diverter valve Tc, three-way diverter valve Td, compression refrigeration expansion valve (15), compression refrigeration evaporimeter (16) and variable speed compressor (17) successively;
Described solar energy jetting and speed change compression coupling refrigeration system are made of solar energy jetting refrigerating circuit and speed change compression refrigeration circuits; Its solar energy jetting refrigerating circuit is that one the tunnel was communicated with transfer valve VI, the 3rd ejector refrigeration expansion valve (7), devaporizer (10) and coupling refrigeration injector (3) successively after coupling refrigeration injector (3) and ejector refrigeration condenser (4) were communicated with; Another road is communicated with solar energy heating generator (13), transfer valve III and coupling refrigeration injector (3) after by the second working medium pump (12) successively; Its speed change compression refrigeration circuits is that variable speed compressor (17) is communicated with three-way diverter valve Ta, compression refrigeration condenser (14), three-way diverter valve Tb, three-way diverter valve Tc, devaporizer (10), three-way diverter valve Td, compression refrigeration expansion valve (15), compression refrigeration evaporimeter (16) and variable speed compressor (17) successively;
Described speed change compression refrigerating system is that variable speed compressor (17) is communicated with three-way diverter valve Ta, compression refrigeration condenser (14), three-way diverter valve Tb, three-way diverter valve Tc, three-way diverter valve Td, compression refrigeration expansion valve (15), compression refrigeration evaporimeter (16) and variable speed compressor (17) successively.
2. the compression combined refrigerating plant of solar energy jetting as claimed in claim 1 and speed change, it is characterized in that: described ejector refrigeration condenser (4) is unit-combination type.
3. the compression combined refrigerating plant of solar energy jetting as claimed in claim 1 and speed change, it is characterized in that: described the first working medium pump (11) flow is 1.5 ~ 3 times of the second working medium pump (12) flow.
4. the compression combined refrigerating plant of solar energy jetting as claimed in claim 1 and speed change, it is characterized in that: the flow sum of described the first working medium pump (11) and the second working medium pump (12) equals the flow of solar energy jetting refrigeration system.
5. the compression combined refrigerating plant of solar energy jetting as claimed in claim 1 and speed change, it is characterized in that: described solar energy jetting refrigeration system is at sun irradiance 〉=800W/m
2Shi Yunhang, described solar energy jetting and speed change compression cascade refrigeration system are at sun irradiance 〉=400W/m
2And＜800W/m
2Shi Yunhang, described solar energy jetting and speed change compression coupling refrigeration system are at sun irradiance 〉=100W/m
2And＜400W/m
2Shi Yunhang, described speed change compression refrigerating system is at sun irradiance＜100W/m
2Shi Yunhang.
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|---|---|---|---|---|
| CN110454897B (en) * | 2019-08-07 | 2020-12-01 | 西安工程大学 | Evaporative cooling-solar energy absorption type refrigeration air-conditioning system |
| CN113883738B (en) * | 2021-09-29 | 2022-11-11 | 浙江工业大学 | Novel solar energy sprays-compression refrigerating system |
| CN114719457B (en) * | 2022-03-17 | 2023-05-30 | 西北工业大学 | Energy-saving data center refrigeration composite system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1391238A2 (en) * | 2002-08-15 | 2004-02-25 | Mitsubishi Chemical Corporation | Adsorbent for heat utilization system, adsorbent for regenerator system, regenerator system comprising the adsorbent, ferroaluminophosphate and method for production thereof |
| EP1533154A1 (en) * | 2002-07-16 | 2005-05-25 | Toyota Jidosha Kabushiki Kaisha | Air-conditioning apparatus |
| CN1769815A (en) * | 2004-11-04 | 2006-05-10 | 松下电器产业株式会社 | Control method of refrigeration cycle apparatus and refrigeration cycle apparatus using the control method |
| CN1786616A (en) * | 2004-12-10 | 2006-06-14 | Lg电子株式会社 | Cogeneration system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7093458B2 (en) * | 2003-02-19 | 2006-08-22 | The Boeing Company | System and method of refrigerating at least one enclosure |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533154A1 (en) * | 2002-07-16 | 2005-05-25 | Toyota Jidosha Kabushiki Kaisha | Air-conditioning apparatus |
| EP1391238A2 (en) * | 2002-08-15 | 2004-02-25 | Mitsubishi Chemical Corporation | Adsorbent for heat utilization system, adsorbent for regenerator system, regenerator system comprising the adsorbent, ferroaluminophosphate and method for production thereof |
| CN1769815A (en) * | 2004-11-04 | 2006-05-10 | 松下电器产业株式会社 | Control method of refrigeration cycle apparatus and refrigeration cycle apparatus using the control method |
| CN1786616A (en) * | 2004-12-10 | 2006-06-14 | Lg电子株式会社 | Cogeneration system |
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