CN101929758A - Continuous refrigerating system with energy storage of solar energy working medium and continuous refrigerating method - Google Patents
Continuous refrigerating system with energy storage of solar energy working medium and continuous refrigerating method Download PDFInfo
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- CN101929758A CN101929758A CN2010102740981A CN201010274098A CN101929758A CN 101929758 A CN101929758 A CN 101929758A CN 2010102740981 A CN2010102740981 A CN 2010102740981A CN 201010274098 A CN201010274098 A CN 201010274098A CN 101929758 A CN101929758 A CN 101929758A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a continuous refrigerating system with energy storage of a solar energy working medium and a continuous refrigerating method, belonging to the technical field of solar energy conversion. When the solar radiation is sufficient, a refrigerating machine is driven for refrigeration by solar heat energy, and surplus solar heat energy is converted into a high-purity liquid refrigerating working medium by solution evaporation, gasification and liquidation, and the high-purity liquid refrigerating working medium is stored at normal temperature. Meantime, a solar energy collector and each part of the refrigerating machine are in a working state, which is called as great circulation. At night or in an overcast and rainy day when the solar radiation is insufficient, the stored high-purity liquid refrigerating working medium enters an evaporator for refrigerating by evaporation, meantime, only the evaporator and an absorber of the refrigerating system work, which is called as small circulation. Simultaneously, a diluted solution stored in great circulation continuously enters the absorber for maintaining the absorbing capacity. A concentrated solution after vapor is absorbed enters a concentrated solution storage tank and is used in the next great circulation. The invention has the advantage of realizing all-weather solar energy driving continuous refrigeration without auxiliary energy sources under the condition of unstable solar radiation energy.
Description
Technical field
The invention belongs to solar energy Conversion and Utilization technical field, be specifically related to a kind of energy storage of solar energy working medium continuous refrigeration system, the invention still further relates to and utilize this system to carry out the continuous cooling method.
Background technology
Existing refrigeration and air-conditioning technical field generally all adopt electric energy to drive refrigeration machine refrigeration etc.This method power consumption is big, refrigeration cost height, the development that is unfavorable for protecting environment and promotes low-carbon economy.In order to reduce the consumption of non-renewable energy resources, consider to use solar energy as drive energy, but because solar energy has round the clock and rain or shine waits variation, be a kind of intermittence and the instable energy, so the storage of enriching solar energy is become the key issue of refrigeration, existing utilize seldom to have in the solar refrigeration method consider energy storage method efficiently.
Energy storage method commonly used, the method for mainly utilizing hot water storage tank or phase-transition heat-storage stores the heat energy of solar energy.Under certain refrigerating capacity required, the volume of hot water storage tank was bigger, made troubles for installation, use, also will consider the insulation of water tank.The serviceability of phase-change material is along with access times can reduce in the method for using phase-transition heat-storage, and phase transition heat accumulation unit also will be considered insulation, can increase cost and have energy loss.
Mention in the energy-storing refrigerating method that also has a kind of solar thermal energy to drive, utilize the direct heating work solution of solar energy and convert refrigeration potential to store, when the needs cold energy, convert the refrigeration potential that stores to required cold energy.This solar refrigeration method exists not enough: one, solar thermal collector adopt working solution as thermal-arrest and heat transferring medium, can only realize the heat absorption of part evaporation latent heat, and all the other are the sensible heat heat absorption, and collecting efficiency is lower; Its two, the working solution storage tank is also being undertaken the function of gas-liquid separation, must insulation, when solar radiant energy heat energy deficiency, the heat collector temperature can produce reverse heat transfer to heat collector by the working solution storage tank when low, easily causes energy loss; They are three years old, night or overcast and rainy back solar energy are once more during heating work solution, because this moment, the working solution tank temperature was lower, there is the higher working solution of absorber component concentration again, refrigerant vapour can take place directly absorbed generation " short circuit " by the absorbent in the working solution storage tank, do not arrive condenser and evaporimeter, system can not freeze.Its four, when the solar energy deficiency, during refrigeration potential work that refrigeration system rely on to store, the refrigerant component in the working solution storage tank constantly increases, absorbability will cause the refrigeration system can not continuous operation worse and worse; Its five, the method for the direct heating work solution of solar energy, the working medium charging amount is big, thermal inertia is big, refrigeration system starts slowly.
Summary of the invention
The purpose of this invention is to provide a kind of energy storage of solar energy working medium continuous refrigeration system, with overcome the energy-storing refrigerating system and method that existing solar thermal energy drives very weak at solar energy, do not have or solar energy can't be realized the problem of freezing when inadequate.
Another object of the present invention provides a kind of method of utilizing said system to freeze.
The technical solution adopted in the present invention is that a kind of energy storage of solar energy working medium continuous refrigeration system comprises solar energy heat collector, generator, condenser, evaporimeter and absorber; Be provided with heat transferring medium in the solar energy heat collector, be provided with refrigeration working medium in the generator; Solar energy heat collector is connected by first pipeline that is built-in with heat transferring medium and the first heat exchanger tube import that is arranged on generator inside, and the outlet of first heat exchanger tube is connected by second pipeline and the solar energy heat collector that is built-in with heat transferring medium;
Generator top is connected by the 3rd pipeline and condenser top, and condenser is connected by the 4th pipeline and evaporimeter; The 4th pipeline is connected by the 5th pipeline and refrigeration working medium storage tank; Evaporimeter top is connected by the 6th pipeline and absorber top;
The generator bottom is connected by the 11 pipeline and the tenth pipeline and absorber, weak solution storage tank respectively, and the weak solution storage tank is connected by the 12 pipeline and absorber; Also be connected on the 11 pipeline by the 14 pipeline and concentrated solution storage tank;
The 3rd heat exchanger tube and the cold and warm air heating radiator that are arranged on evaporimeter inside are connected, and the 3rd heat exchanger tube is built-in with refrigerating medium.
Wherein, solar energy heat collector is a solar energy gravity assisted heat pipe heat collector, and this solar energy gravity assisted heat pipe heat collector is made up of a plurality of vacuum heat-pipes, and each vacuum heat-pipe comprises glass tube and gravity assisted heat pipe, is sealed with the water quality working solution in the gravity assisted heat pipe; The top of a plurality of glass tubes is provided with a cavity; The evaporator section of gravity assisted heat pipe is positioned at glass tube, and condensation segment is positioned at cavity; Be provided with heat collecting element between the evaporator section of gravity assisted heat pipe and the glass tube, be full of heat transferring medium between the condensation segment of gravity assisted heat pipe and the cavity.
Its characteristics also are, are provided with second heat exchanger tube in the condenser, are provided with the 4th heat exchanger tube in the absorber; The 4th heat exchanger tube import is connected with cooling tower by the 15 pipeline, and the outlet of the 4th heat exchanger tube is connected by the import of the 16 pipeline and second heat exchanger tube, and the outlet of second heat exchanger tube is connected with cooling tower by the 17 pipeline; The 15 pipeline is provided with coolant pump.
Wherein, the 3rd heat exchanger tube import that is arranged on evaporimeter inside is connected by the 8th pipeline and cold and warm air heating radiator, and the outlet of the 3rd heat exchanger tube is connected by the 9th pipeline and cold and warm air heating radiator, and the 9th pipeline is provided with coolant pump.
Wherein, the 11 pipeline is provided with generating pump.
Wherein, the 4th pipeline and the 6th pipeline are all by first heat exchanger; Also be provided with the first throttle valve on the 4th pipeline between first heat exchanger and the evaporimeter.
Wherein, the 11 pipeline and the 12 pipeline are all by second heat exchanger; The 12 pipeline between second heat exchanger and the absorber is provided with second choke valve.
Another technical solution used in the present invention is,
When solar energy was sufficient, whole system realized systemic circulation:
Flowed in first heat exchanger tube in the generator by first pipeline by the heat transferring medium after the solar energy heat collector heating, refrigeration working medium in the generator is heated, produce refrigeration working medium steam, heat transferring medium in generator after the heat release flows back to by second pipeline and continues heat absorption in the solar energy heat collector, carries out heat cycles; Refrigeration working medium steam in the generator enters in the condenser by the 3rd pipeline, is condensed into highly purified refrigeration working medium liquid; In the refrigeration working medium storage tank, another part flow in the evaporimeter by the 4th pipeline a high-purity refrigeration working medium liquid part in the condenser, and pools the higher refrigeration working medium of concentration at base of evaporator by the 5th pipelined storage; Refrigeration working medium weak solution in the generator after the evaporation at first flows in the weak solution storage tank by the tenth pipeline, and a part of refrigeration working medium weak solution is by in the 12 pipeline inflow absorber, and unnecessary refrigeration working medium weak solution then is stored in the weak solution storage tank; The refrigeration working medium weak solution absorbs the refrigeration working medium concentrated solution in the evaporimeter by the 6th pipeline in the absorber, evaporation of refrigeration working medium concentrated solution and heat absorption in the evaporimeter, refrigerant temperature in the 3rd heat exchanger tube is descended, in the refrigerating medium input cold and warm air heating radiator, realize refrigeration; In absorption process, the refrigeration working medium weak solution in the absorber thickens gradually, and the refrigeration working medium after thickening by in the 11 pipeline input generator, produces refrigerant vapour more again after the heating, recycle;
Very weak or when not having, whole system realizes partial circulating when solar energy:
The high-purity refrigeration working medium liquid that is stored in the refrigeration working medium storage tank passes through in the 5th pipeline and the 4th pipeline inflow evaporator successively; Simultaneously, the refrigeration working medium weak solution that is stored in the weak solution holding vessel is passed through in the 12 pipeline inflow absorber, the refrigeration working medium weak solution absorbs the refrigeration working medium concentrated solution in the evaporimeter by the 6th pipeline in the absorber, evaporation of refrigeration working medium concentrated solution and heat absorption in the evaporimeter, refrigerant temperature in the 3rd heat exchanger tube is descended, in the refrigerating medium input cold and warm air heating radiator, realize refrigeration; In absorption process, the refrigeration working medium weak solution in the absorber thickens gradually, is stored in earlier in the concentrated solution storage tank by the 14 pipeline; Abundant Deng sunshine, during generator work, the refrigeration working medium concentrated solution in the concentrated solution storage tank is input in the generator by the 11 pipeline, produces refrigerant vapour after the heating again;
When solar energy was inadequate, whole system realized that big partial circulating carries out simultaneously:
Flowed in first heat exchanger tube in the generator by first pipeline by the heat transferring medium after the solar energy heat collector heating, refrigeration working medium in the generator is heated, produce refrigeration working medium steam, heat transferring medium in generator after the heat release flows back to by second pipeline and continues heat absorption in the solar energy heat collector, carries out heat cycles; Refrigeration working medium steam in the generator enters in the condenser by the 3rd pipeline, is condensed into highly purified refrigeration working medium liquid; High-purity refrigeration working medium liquid that produces in the condenser and the high-purity refrigeration working medium liquid that is stored in the refrigeration working medium storage tank pass through in the 4th pipeline inflow evaporator together, and pool the higher refrigeration working medium of concentration at base of evaporator; Refrigeration working medium weak solution in the generator after the evaporation at first flows in the weak solution storage tank by the tenth pipeline, stores the refrigeration working medium weak solution again by in the 12 pipeline inflow absorber in the weak solution storage tank; The refrigeration working medium weak solution absorbs the refrigeration working medium concentrated solution in the evaporimeter by the 6th pipeline in the absorber, refrigeration working medium evaporation and heat absorption in the evaporimeter, refrigerant temperature in the 3rd heat exchanger tube is descended, in the refrigerating medium input cold and warm air heating radiator, realize refrigeration; In absorption process, the refrigeration working medium weak solution in the absorber thickens gradually, and the refrigeration working medium after thickening by in the 11 pipeline input generator, produces refrigerant vapour more again after the heating, recycle.
The invention has the beneficial effects as follows,
1) utilize refrigeration working medium to solution as the solar energy storage material, when solar radiation is sufficient, will have more than needed and store after the solar radiation heat converts high-purity refrigeration working medium liquid to, when solar radiation was not enough or very weak, the cold energy that discharges the refrigeration working medium storage used for absorption system.Solved solar radiation when sufficient because system's refrigerating capacity design requirement is limited, make solar energy can not get the problem utilized fully and solar radiation when not enough refrigeration system can not get enough drive energies and use the problem of auxiliary electric energy;
2) heat transferring medium and refrigeration working medium are to independently of one another, and the working medium injection rate is few, and thermal inertia is little;
3) the working medium energy storage device is worked at normal temperatures, needn't be incubated, and energy loss is few;
4) adopt the large and small circularly cooling technology of absorption refrigeration to continue to produce required refrigerating capacity, satisfy because of the unstable refrigeration needs that change of solar energy; During partial circulating, heat collector, generator and condenser are not all worked, and energy loss is few;
5) with solar energy gravity assisted heat pipe thermal-arrest, absorption refrigeration, working medium energy storage, the integrated application of big or small circulating technology.
The present invention utilizes solar energy heat collector in solar energy abundance, the method for circulation simultaneously of systemic circulation, partial circulating and the size by refrigeration system respectively when very weak or not enough, reduce refrigeration machine greatly and be subjected to intermittent and instable influence of solar energy, simultaneously solar energy is fully used.Be implemented under the unsettled situation of solar radiant energy the Driven by Solar Energy continuous cooling of round-the-clock no supplementary energy.And the present invention does not pollute at process of refrigerastion, and is very favourable to the protection environment.Adopt working medium energy storage and large and small circulation can make full use of solar energy, solved the problem of the continual and steady refrigeration of refrigeration system when solar energy is very weak or not enough.Operating cost is low, the economic benefit height.
Description of drawings
Fig. 1 is the structural representation of energy storage of solar energy working medium continuous refrigeration system of the present invention; (the arrow direction is liquid or gas flow direction)
Fig. 2 is the structural representation of solar energy gravity assisted heat pipe heat collector;
Fig. 3 is A-A view of Fig. 2.
Among the figure, 1. generator, 2. condenser, 3. refrigeration working medium storage tank, 4. first heat exchanger, 5. first throttle valve, 6. evaporimeter, 7. evaporation pump, 8. coolant pump, 9. cold and warm air heating radiator, 10. absorber, 11. absorption pumps, 12. the concentrated solution storage tank, 13. generating pumps, 14. second heat exchangers, 15. second choke valves, 16. the weak solution storage tank, 17. heat-exchanger pumps, 18. solar energy gravity assisted heat pipe heat collectors, 19. cooling towers, 20. coolant pump, 21. glass tubes, 22. gravity assisted heat pipes, 23. evaporator sections, 24. condensation segment, 25. aluminum fins, 26. cavitys, 27. heat transferring mediums, 28. first pipeline, 29. second pipelines, 30. the 3rd pipelines, 31. the 4th pipeline, 32. the 5th pipelines, 33. the 6th pipelines, 34. the 7th pipeline, 35. the 8th pipelines, 36. the 9th pipelines, 37. the tenth pipeline, 38. the 11 pipelines, 39. the 12 pipelines, 40. the 13 pipeline, 41. the 14 pipelines, 42. the 15 pipelines, 43. the 16 pipeline, 44. the 17 pipelines, 45. first heat exchanger tubes, 46. second heat exchanger tube, 47. the 3rd heat exchanger tubes, 48. the 4th heat exchanger tubes.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the invention provides a kind of energy storage of solar energy working medium continuous refrigeration system, comprise solar energy gravity assisted heat pipe heat collector 18, generator 1, condenser 2, evaporimeter 6 and absorber 10.Be provided with the refrigeration working medium and first heat exchanger tube 45 in the generator 1, be provided with second heat exchanger tube 46 in the condenser 2, be provided with the 3rd heat exchanger tube 47 in the evaporimeter 6, be provided with the 4th heat exchanger tube 48 in the absorber 10.
As shown in Figure 2, solar energy gravity assisted heat pipe heat collector 18 is made up of a plurality of vacuum heat-pipes, and each vacuum heat-pipe comprises transparent glass tube 21 and gravity assisted heat pipe 22.Be coated with coating for selective absorption (purpose is the solar radiation heat energy that absorb) more on the transparent glass tube 21, be sealed with the water quality working solution in the gravity assisted heat pipe 22, heat resistant material is a copper pipe.The top of a plurality of transparent glass tubes 21 is provided with a cavity 26; The evaporator section 23 of gravity assisted heat pipe 22 is positioned at glass tube 21, and condensation segment 24 is positioned at cavity 26; As shown in Figure 3, be provided with heat collecting element between the evaporator section 23 of gravity assisted heat pipe 22 and the glass tube 21, heat collecting element is that aluminum fin 25 is used to absorb solar energy, is vacuum state and sealing between the evaporator section 23 of gravity assisted heat pipe 22 and the glass tube 21.Be full of heat transferring medium 27 between the condensation segment 24 of gravity assisted heat pipe 22 and the cavity 26.Its operation principle is: absorb solar energy by the aluminum fin in the glass tube 21 25, the water quality working solution of gravity assisted heat pipe 22 evaporator sections 23 is subjected to thermal evaporation, steam rises to along gravity assisted heat pipe 22 and relies on gravity to be back to evaporator section 23 continuation heat absorption evaporations, circulation automatically from condensation segment 24 after condensation segment 24 heat releases condense into liquid; The heat transferring medium 27 of water quality working solution outside pipe is passed to heat in condensation segment 24 heat releases, heat transferring medium 27 enters the driving heat source of refrigeration system as refrigeration system.With the solar collecting device of solar energy gravity assisted heat pipe heat collector 18 as refrigeration system, be enclosed within the water quality working solution evaporation heat absorption in the gravity assisted heat pipe 22, absorb solar energy, the condensation heat release, the heating heat transferring medium, this process is not reverse carries out.Latent heat heat absorption efficiently, heat release and one-way heat conduction have been realized.Heat transferring medium 27 is enclosed within first heat exchanger tube 45, first pipeline 28 and second pipeline 29, and area of dissipation is little, is easy to insulation, whole collecting efficiency height, long service life.
As shown in Figure 1, the cavity 26 of solar energy gravity assisted heat pipe heat collector 18 is connected by first heat exchanger tube, 45 imports in first pipeline 28 and the generator 1, and 45 outlets of first heat exchanger tube are connected with cavity 26 by second pipeline 29; Second pipeline 29 is provided with heat-exchanger pump 17.
Generator 1 top is connected with condenser 2 tops by the 3rd pipeline 30, and condenser 2 bottoms are connected with evaporimeter 6 by the 4th pipeline 31; The 4th pipeline 31 also is connected with refrigeration working medium storage tank 3 by the 5th pipeline 32; Evaporimeter 6 tops are connected with absorber 10 tops by the 6th pipeline 33; The 4th pipeline 31 and the 6th pipeline 33 all are provided with first throttle valve 5 by the 4th pipeline 31 between first heat exchanger, 4, the first heat exchangers 4 and the evaporimeter 6.
Generator 1 bottom is connected with absorber 10, weak solution storage tank 16 by the 11 pipeline 38 and the tenth pipeline 37 respectively, and weak solution storage tank 16 is connected with absorber 10 by the 12 pipeline 39; The 11 pipeline 38 and the 12 pipeline 39 all are provided with second choke valve 15 by the 12 pipeline 39 between second heat exchanger, 14, the second heat exchangers 14 and the absorber 10; Also be connected with concentrated solution storage tank 12 by the 14 pipeline 41 on the 11 pipeline 38, the 11 pipeline 38 is provided with generating pump 13.Top in the absorber 10 is arranged with two showers in parallel, and these two showers are provided with the nozzle of a plurality of openings towards the 4th heat exchanger tube 48; One end and the weak solution storage tank 16 of the 12 pipeline 39 are connected, in the other end and the absorber 10 wherein a shower be connected; Be provided with the 13 pipeline 40, the 13 pipelines 40 between the bottom of absorber 10 and another root shower and be provided with absorption pump 11.
The 3rd heat exchanger tube 47 imports that are arranged on evaporimeter 6 inside are connected with cold and warm air heating radiator 9 by the 8th pipeline 35, and 47 outlets of the 3rd heat exchanger tube are connected with cold and warm air heating radiator 9 by the 9th pipeline 36; The 9th pipeline 36 is provided with coolant pump 8.Evaporimeter 6 tops are provided with a shower, and shower is provided with the nozzle of a plurality of openings towards the 3rd heat exchanger tube 47; Be provided with the 7th pipeline 34, the seven pipelines 34 between evaporimeter 6 bottoms and this shower and be provided with evaporation pump 7.
48 imports of the 4th heat exchanger tube are connected with cooling tower 19 by the 15 pipeline 42 in the absorber 10,48 outlets of the 4th heat exchanger tube are connected by the 16 pipeline 43 and condenser 2 interior second heat exchanger tube, 46 imports, and 46 outlets of second heat exchanger tube are connected with cooling tower 19 by the 17 pipeline 44.The 15 pipeline 42 is provided with coolant pump 20.Under the driving of coolant pump 20, circulating cooling water in the 4th heat exchanger tube 48, second heat exchanger tube the 46, the 15 pipeline the 42, the 16 pipeline 43 and the 17 pipeline 44 from cooling tower 19.
The method that energy storage of solar energy working medium continuous refrigeration system of the present invention carries out continuous cooling is:
One, when solar energy is sufficient, whole system realizes systemic circulation
In first heat exchanger tube 45 that is flowed in the generators 1 by first pipeline 28 as driving heat source by the heat transferring medium after solar energy gravity assisted heat pipe heat collector 18 heating, the refrigeration working medium concentrated solution in the generator 1 is heated, produce refrigeration working medium steam.Heat transferring medium in generator 1 after the heat release flows back under heat-exchanger pump 17 effects by second pipeline 29 and continues heat absorption in the cavity 26, carries out heat cycles.Refrigeration working medium steam enters in the condenser 2 by the 3rd pipeline 30, carries out heat exchange with cooling water in second heat exchanger tube 46, is condensed into highly purified refrigeration working medium liquid; High-purity refrigeration working medium liquid in the condenser 2, a part is by the 4th pipeline 31, flow into sweat cooling in the evaporimeter 6 through first heat exchanger 4 and first throttle valve 5, high-purity refrigeration working medium flow direction evaporimeter 6 bottoms of failing to evaporate, pool the refrigeration working medium concentrated solution, under the effect of evaporation pump 7, pass through abundant sweat cooling in the shower at the 7th pipeline 34 inflow evaporators 6 tops; Unnecessary high-purity refrigeration working medium solution is stored in the refrigeration working medium storage tank 3 by the 5th pipeline 32.Simultaneously, refrigeration working medium weak solution in the generator 1 after the evaporation at first flows in the weak solution storage tank 16 by the tenth pipeline 37, unnecessary refrigeration working medium weak solution stores in weak solution storage tank 16, and another part refrigeration working medium weak solution is by the 12 pipeline 39, and through in one of them shower in second interchanger 14 and second choke valve, 15 inflow absorbers 10, spray to absorber 10 bottoms, in this process, absorb the refrigerant vapour of flash-pot 6, pool the refrigeration working medium weak solution in absorber 10 bottoms; In order to keep the absorbability of absorber 10, the refrigeration working medium weak solution of absorber 10 bottoms by in another root shower of the 13 pipeline 40 inflow absorbers 10 tops, sprays to absorber 10 bottoms under the effect of absorption pump 11.Because the concentration of refrigeration working medium is less than the concentration of refrigeration working medium in the evaporimeter 6 in the absorber 10, the refrigeration working medium weak solution absorbs by the refrigeration working medium concentrated solution in 33 pairs of evaporimeters of the 6th pipeline 6 in the absorber 10, make the refrigeration working medium concentrated solution in the evaporimeter 6 evaporate and heat absorption, refrigerant temperature in the 3rd heat exchanger tube 47 is descended, start coolant pump 8, refrigerating medium is imported in the cold and warm air heating radiator 9, realized refrigeration.
Absorber 10 heat of solution that the refrigeration working medium process produces in absorbing evaporimeter 6 is taken away by the cooling water in the 4th heat exchanger tube 48.In absorption process, the refrigeration working medium weak solution in the absorber 10 thickens gradually, starts absorption pump 13, by the 11 pipeline 38 and through second heat exchanger, 14 input generators 1, produces refrigerant vapour after the heating again, recycles.
Two, very weak or do not have (night or rainy day) when solar energy, in the time of can not driving refrigeration system work, whole system realizes partial circulating:
Be stored in high-purity refrigeration working medium liquid (storing when sunlight is abundant) in the refrigeration working medium storage tank 3 successively by the 5th pipeline 32 and the 4th pipeline 31 and through in first heat exchanger 4 and choke valve 5 inflow evaporators 6; Simultaneously, be stored in refrigeration working medium weak solutions (storing when sunlight is abundant) in the weak solution holding vessel 16 by the 12 pipeline 39 and through in second heat exchanger 14 and second choke valve, 15 inflow absorbers 10 wherein in shower, spray to absorber 10 bottoms, pool the refrigeration working medium weak solution in absorber 10 bottoms; In order to keep the absorbability of absorber 10, the refrigeration working medium weak solution of absorber 10 bottoms by in another root shower at the 13 pipeline 40 inflow absorbers 10 tops, sprays to absorber 10 bottoms under the effect of absorption pump 11.The refrigeration working medium weak solution absorbs by the refrigeration working medium concentrated solution in 33 pairs of evaporimeters of the 6th pipeline 6 in the absorber 10, make the refrigeration working medium concentrated solution in the evaporimeter 6 evaporate and heat absorption, refrigerant temperature in the 3rd heat exchanger tube 47 is descended, start coolant pump 8, refrigerating medium is imported in the cold and warm air heating radiator 9, realized refrigeration.In absorption process, the refrigeration working medium weak solution in the absorber 10 thickens gradually, is stored in the concentrated solution storage tank 12 by the 14 pipeline 41; Abundant Deng sunshine, when generator 1 and generating pump 13 work, under the driving of generating pump 13, the refrigeration working medium concentrated solution that is stored in the concentrated solution storage tank 12 is input in the generator 1 by the 11 pipeline 38, again produce refrigerant vapour after the heating, in next systemic circulation, use.
Relative sufficient period of solar energy, solar energy is very weak or when not having, solar energy gravity assisted heat pipe heat collector 18, generator 1 and condenser 2 all not have work, and refrigeration system has only evaporimeter 6 and absorber 10 in work, utilizes energy storage release to freeze.
Three, when solar energy is inadequate (the broken sky solar radiation is weak), whole system realizes that big partial circulating carries out simultaneously:
In first heat exchanger tube 45 that is flowed in the generators 1 by first pipeline 28 as driving heat source by the heat transferring medium after solar energy gravity assisted heat pipe heat collector 18 heating, the refrigeration working medium in the generator 1 is heated, produce refrigeration working medium steam.Heat transferring medium after generator 1 heat release flows back under heat-exchanger pump 17 effects by second pipeline 29 and continues heat absorption in the cavity 26, carries out heat cycles.Refrigeration working medium steam enters in the condenser 2 by the 3rd pipeline 30, carries out heat exchange with cooling water in second heat exchanger tube 46, is condensed into highly purified refrigeration working medium liquid; Since solar energy a little less than, so the refrigeration working medium steam that produces is less, the highly purified refrigeration working medium liquid of condensation is also less, be not enough to satisfy the refrigeration demand of refrigeration system, so high-purity refrigeration working medium liquid that produces in the condenser 2 and the high-purity refrigeration working medium liquid (deposit when sunlight is abundant) that is stored in the refrigeration working medium storage tank 3, together by the 4th pipeline 31, and flow into sweat cooling in the evaporimeter 6 through first heat exchanger 4 and first throttle valve 5, high-purity refrigeration working medium flow direction evaporimeter 6 bottoms of failing to evaporate, and pool the higher refrigeration working medium of concentration in evaporimeter 6 bottoms; The refrigeration working medium concentrated solution of evaporimeter 6 bottoms by in the shower at the 7th pipeline 34 inflow evaporators 6 tops, sprays to the bottom of evaporimeter 6 under the effect of evaporation pump 7.Refrigeration working medium weak solution in the generator 1 after the evaporation at first flows in the weak solution storage tank 16 by the tenth pipeline 37, in weak solution storage tank 16, store refrigeration working medium weak solution (deposit when sunlight is abundant) again by the 12 pipeline 39, and through in the shower in second interchanger 14 and second choke valve, 15 inflow absorbers 10, spray to absorber 10 bottoms, in this process, absorb the refrigerant vapour of flash-pot 6, pool the refrigeration working medium weak solution in its bottom; In order to keep the absorbability of absorber 10, the refrigeration working medium weak solution of bottom by in another root shower of the 13 pipeline 40 inflow absorbers 10 tops, sprays to absorber 10 bottoms under the effect of absorption pump 11.Because the concentration of refrigeration working medium is less than the concentration of refrigeration working medium in the evaporimeter 6 in the absorber 10, the refrigeration working medium weak solution absorbs by the refrigeration working medium concentrated solution in 33 pairs of evaporimeters of the 6th pipeline 6 in the absorber 10, refrigeration working medium evaporation and heat absorption in the evaporimeter 6, refrigerant temperature in the 3rd heat exchanger tube 47 is descended, start coolant pump 8, refrigerating medium is imported in the cold and warm air heating radiator 9, realized refrigeration.
Absorber 10 heat of solution that the refrigeration working medium process produces in absorbing evaporimeter 6 is taken away by the cooling water in the 4th heat exchanger tube 48.In absorption process, the refrigeration working medium weak solution in the absorber 10 thickens gradually, starts generating pump 13, refrigeration working medium concentrated solution in the absorber 10 is by the 11 pipeline 38, and, produce refrigerant vapour after the heating again through over-heat-exchanger 14 input generators 1, recycle.
By the above working medium energy storage size circulating solar energy continuous cooling method of utilizing, be implemented under the unsettled situation of solar radiant energy the Driven by Solar Energy continuous cooling of round-the-clock no supplementary energy.
In sum, when system worked with systemic circulation, refrigeration working medium storage tank 3 and weak solution storage tank 16 entered the energy storage state, and memory space is on the increase.When system works with partial circulating, refrigeration working medium storage tank 3 and weak solution storage tank 16 enter the energy state of releasing, memory space constantly reduces, keep evaporimeter 6 refrigeration and absorber 10 operate as normal, meanwhile, concentrated solution behind the absorption steam enters concentrated solution storage tank 12 from absorber 10, and its capacity should be refrigeration working medium storage tank 3 and weak solution storage tank 16 sums.When big partial circulating was worked simultaneously, refrigeration working medium storage tank 3 and weak solution storage tank 16 memory spaces reduced, and concentrated solution storage tank 12 liquid measures increase.
In addition, refrigeration working medium storage tank 3, weak solution storage tank 16 and concentrated solution storage tank 12 do not need insulation, and the conveyance conduit of Lian Jieing is also worked at normal temperatures therewith.
Claims (8)
1. an energy storage of solar energy working medium continuous refrigeration system is characterized in that: comprise solar energy heat collector, generator (1), condenser (2), evaporimeter (6) and absorber (10); Be provided with heat transferring medium in the solar energy heat collector, generator is provided with refrigeration working medium in (1); Solar energy heat collector is connected by first pipeline (28), first heat exchanger tube (45) import inner with being arranged on generator (1) that is built-in with heat transferring medium, and first heat exchanger tube (45) outlet is connected with solar energy heat collector by second pipeline (29) that is built-in with heat transferring medium;
Generator top (1) is connected by the 3rd pipeline (30) and condenser (2) top, and condenser (2) bottom is connected by the 4th pipeline (31) and evaporimeter (6); Described the 4th pipeline (31) is connected by the 5th pipeline (32) and refrigeration working medium storage tank (3); Evaporimeter (6) top is connected by the 6th pipeline (33) and absorber (10) top;
Generator (1) bottom is connected with absorber (10), weak solution storage tank (16) by the 11 pipeline (38) and the tenth pipeline (37) respectively, and weak solution storage tank (16) is connected by the 12 pipeline (39) and absorber (10); Also be connected on described the 11 pipeline (38) by the 14 pipeline (41) and concentrated solution storage tank (12);
Be arranged on inner the 3rd heat exchanger tube (47) of evaporimeter (6) and be connected with cold and warm air heating radiator (9), the 3rd heat exchanger tube (47) is built-in with refrigerating medium.
2. refrigeration system according to claim 1, it is characterized in that: described solar energy heat collector is a solar energy gravity assisted heat pipe heat collector (18), this solar energy gravity assisted heat pipe heat collector (18) is made up of a plurality of vacuum heat-pipes, each vacuum heat-pipe comprises glass tube (21) and gravity assisted heat pipe (22), and gravity assisted heat pipe is sealed with the water quality working solution in (22); The top of a plurality of glass tubes (21) is provided with a cavity (26); The evaporator section (23) of gravity assisted heat pipe (22) is positioned at glass tube (21), and condensation segment (24) is positioned at cavity (26); Be provided with heat collecting element between the evaporator section (23) of gravity assisted heat pipe (22) and the glass tube (21), be full of heat transferring medium between the condensation segment (24) of gravity assisted heat pipe (22) and the cavity (26).
3. refrigeration system according to claim 1 is characterized in that: be provided with second heat exchanger tube (46) in the condenser (2), be provided with the 4th heat exchanger tube (48) in the absorber (10); The 4th heat exchanger tube (48) import is connected with cooling tower (19) by the 15 pipeline (42), the 4th heat exchanger tube (48) outlet is connected by the import of the 16 pipeline (43) with second heat exchanger tube (46), and second heat exchanger tube (46) outlet is connected with cooling tower (19) by the 17 pipeline (44); Described the 15 pipeline (42) is provided with coolant pump (20).
4. refrigeration system according to claim 1, it is characterized in that: be arranged on inner the 3rd heat exchanger tube (47) import of evaporimeter (6) and be connected by the 8th pipeline (35) and cold and warm air heating radiator (9), the 3rd heat exchanger tube (47) outlet is connected by the 9th pipeline (36) and cold and warm air heating radiator (9), and described the 9th pipeline (36) is provided with coolant pump (8).
5. refrigeration system according to claim 1 is characterized in that: described the 11 pipeline (38) is provided with generating pump (13).
6. refrigeration system according to claim 1 is characterized in that: described the 4th pipeline (31) and the 6th pipeline (33) are all by first heat exchanger (4); Also be provided with first throttle valve (5) on the 4th pipeline (31) between first heat exchanger (4) and the evaporimeter (6).
7. refrigeration system according to claim 1 is characterized in that: described the 11 pipeline (38) and the 12 pipeline (39) are all by second heat exchanger (14); The 12 pipeline (39) between second heat exchanger (14) and the absorber (10) is provided with second choke valve (15).
8. utilize the described energy storage of solar energy working medium continuous refrigeration system of claim 1 to carry out the continuous cooling method, it is characterized in that: described energy storage of solar energy working medium continuous refrigeration system comprises solar energy heat collector, generator (1), condenser (2), evaporimeter (6) and absorber (10); Be provided with heat transferring medium in the solar energy heat collector, generator is provided with refrigeration working medium in (1); Solar energy heat collector is connected by first pipeline (28), first heat exchanger tube (45) import inner with being arranged on generator (1) that is built-in with heat transferring medium, and first heat exchanger tube (45) outlet is connected with solar energy heat collector by second pipeline (29) that is built-in with heat transferring medium;
Generator top (1) is connected by the 3rd pipeline (30) and condenser (2) top, and condenser (2) bottom is connected by the 4th pipeline (31) and evaporimeter (6); Described the 4th pipeline (31) is connected by the 5th pipeline (32) and refrigeration working medium storage tank (3); Evaporimeter (6) top is connected by the 6th pipeline (33) and absorber (10) top;
Generator (1) bottom is connected with absorber (10), weak solution storage tank (16) by the 11 pipeline (38) and the tenth pipeline (37) respectively, and weak solution storage tank (16) is connected by the 12 pipeline (39) and absorber (10); Also be connected on described the 11 pipeline (38) by the 14 pipeline (41) and concentrated solution storage tank (12);
Be arranged on inner the 3rd heat exchanger tube (47) of evaporimeter (6) and be connected with cold and warm air heating radiator (9), the 3rd heat exchanger tube (47) is built-in with refrigerating medium;
When solar energy was sufficient, whole system realized systemic circulation:
Flowed in interior first heat exchanger tube (45) of generator (1) by first pipeline (28) by the heat transferring medium after the solar energy heat collector heating, refrigeration working medium in the generator (1) is heated, produce refrigeration working medium steam, heat transferring medium in generator (1) after the heat release flows back to by second pipeline (29) and continues heat absorption in the solar energy heat collector, carries out heat cycles; Refrigeration working medium steam in the generator (1) enters in the condenser (2) by the 3rd pipeline (30), is condensed into highly purified refrigeration working medium liquid; High-purity refrigeration working medium liquid part in the condenser (2) is stored in the refrigeration working medium storage tank (3) by the 5th pipeline (32), another part flow in the evaporimeter (6) by the 4th pipeline (31), and pools the higher refrigeration working medium of concentration in evaporimeter (6) bottom; Refrigeration working medium weak solution in the generator (1) after the evaporation at first flows in the weak solution storage tank (16) by the tenth pipeline (37), part refrigeration working medium weak solution is by in the 12 pipeline (39) inflow absorber (10), and unnecessary refrigeration working medium weak solution then is stored in the weak solution storage tank (16); The interior refrigeration working medium weak solution of absorber (10) absorbs the refrigeration working medium concentrated solution in the evaporimeter (6) by the 6th pipeline (33), evaporation of refrigeration working medium concentrated solution and heat absorption in the evaporimeter (6), refrigerant temperature in the 3rd heat exchanger tube (47) is descended, in the refrigerating medium input cold and warm air heating radiator (9), realize refrigeration; In absorption process, the refrigeration working medium weak solution in the absorber (10) thickens gradually, and the refrigeration working medium after thickening by in the 11 pipeline (38) input generator (1), produces refrigerant vapour more again after the heating, recycle;
Very weak or when not having, whole system realizes partial circulating when solar energy:
The high-purity refrigeration working medium liquid that is stored in the refrigeration working medium storage tank (3) passes through in the 5th pipeline (32) and the 4th pipeline (31) inflow evaporator (6) successively; Simultaneously, the refrigeration working medium weak solution that is stored in the weak solution holding vessel (16) is passed through in the 12 pipeline (39) inflow absorber (10), the interior refrigeration working medium weak solution of absorber (10) absorbs the refrigeration working medium concentrated solution in the evaporimeter (6) by the 6th pipeline (33), evaporation of refrigeration working medium concentrated solution and heat absorption in the evaporimeter (6), refrigerant temperature in the 3rd heat exchanger tube (47) is descended, in the refrigerating medium input cold and warm air heating radiator (9), realize refrigeration; In absorption process, the refrigeration working medium weak solution in the absorber (10) thickens gradually, is stored in earlier in the concentrated solution storage tank (12) by the 14 pipeline (41); Abundant Deng sunshine, during generator (1) work, the refrigeration working medium concentrated solution in the concentrated solution storage tank (12) is input in the generator 1 by the 11 pipeline (38), produces refrigerant vapour after the heating again;
When solar energy was inadequate, whole system realized that big partial circulating carries out simultaneously:
Flowed in interior first heat exchanger tube (45) of generator (1) by first pipeline (28) by the heat transferring medium after the solar energy heat collector heating, refrigeration working medium in the generator (1) is heated, produce refrigeration working medium steam, heat transferring medium in generator (1) after the heat release flows back to by second pipeline (29) and continues heat absorption in the solar energy heat collector, carries out heat cycles; Refrigeration working medium steam in the generator (1) enters in the condenser (2) by the 3rd pipeline (30), is condensed into highly purified refrigeration working medium liquid; High-purity refrigeration working medium liquid that produces in the condenser (2) and the high-purity refrigeration working medium liquid that is stored in the refrigeration working medium storage tank (3) pass through in the 4th pipeline (31) inflow evaporator (6) together, and pool the higher refrigeration working medium of concentration in evaporimeter (6) bottom; Refrigeration working medium weak solution in the generator (1) after the evaporation at first flows in the weak solution storage tank (16) by the tenth pipeline (37), again with storing the refrigeration working medium weak solution in the weak solution storage tank (16) by in the 12 pipeline (39) inflow absorber (10); The interior refrigeration working medium weak solution of absorber (10) absorbs the refrigeration working medium concentrated solution in the evaporimeter (6) by the 6th pipeline (33), refrigeration working medium evaporation and heat absorption in the evaporimeter (6), refrigerant temperature in the 3rd heat exchanger tube (47) is descended, in the refrigerating medium input cold and warm air heating radiator (9), realize refrigeration; In absorption process, the refrigeration working medium weak solution in the absorber (10) thickens gradually, and the refrigeration working medium after thickening by in the 11 pipeline (38) input generator (1), produces refrigerant vapour more again after the heating, recycle.
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