CN101871672B - Heat supply system and heat supply method - Google Patents
Heat supply system and heat supply method Download PDFInfo
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- CN101871672B CN101871672B CN200910301868A CN200910301868A CN101871672B CN 101871672 B CN101871672 B CN 101871672B CN 200910301868 A CN200910301868 A CN 200910301868A CN 200910301868 A CN200910301868 A CN 200910301868A CN 101871672 B CN101871672 B CN 101871672B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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Abstract
The invention relates to a heat supply system and a heat supply method. The heat supply system comprises a first storing tank and a second storing tank, wherein the first storing tank is used for containing a first solution and is provided with a first heat exchanger; the second storing tank is used for containing a second solution and is provided with a second heat exchanger; the first storing tank is communicated with the second storing tank by a gas passage; and a relation curve of saturated vapor pressure and temperature of the first solution and a relation curve of saturated vapor pressure and temperature of the second solution has an intersection point. The heat supply method comprises the following steps of: first heat supply process: heating the first solution so as to generate working medium steam, wherein the working medium steam is absorbed by the second solution to release absorbing heat; and second heat supply process: heating the second solution to generate working medium steam by taking a terminating state in the first heat supply process as an initial state for the second heat supply process,, wherein the working medium steam is adsorbed by the first solution to release absorbing heat.
Description
Technical field
The present invention relates to a kind of heat supply process of Thermal Power Engineering Field, particularly a kind of heating system and heat supply method that comprises two heat supplying processes.
Background technology
Existing absorption type heat pump system utilizes absorbent solution can separate out the steam of low boiling component under certain condition, under another condition, can absorb this characteristic of low boiling component steam again consumingly and accomplish refrigeration or heat pump cycle.Two component absorbent solutions are usually adopted in absorption circulation, claim that traditionally low boiling component is a working medium, and high boiling component is an absorbent, and it is right that the two forms working medium, and common have with water to be working medium, to be that the water lithium bromide working medium of absorbent is right with the lithium bromide.Existing absorption type heat pump system mainly comprises: in establish heat exchanger generator, in establish heat exchanger condenser, in establish heat exchanger evaporimeter and in establish the absorber of heat exchanger, also have absorbent solution as auxiliary equipment in addition from heat exchanger, absorbent solution pump and flow controller etc.Generator links to each other through vapor passageway with condenser, and evaporimeter links to each other through vapor passageway with absorber.Absorbent solution circulates between generator and absorber through the absorbent solution pipeline.
The course of work of existing absorption type heat pump system comprises: (1) utilizes driving heat source (like steam, hot water and combustion gas etc.) in generator, to heat from what absorber transported to have a certain density lithium-bromide solution; And the water that bromizates in the lithium solution is evaporated, and the dense lithium-bromide solution of formation is recycled in the absorber.(2) steam gets in the condenser through vapor passageway, is condensed into condensed water by the cooling working medium in the heat exchanger again.(3) this condensed water gets in the evaporimeter through condensing water conduit; Absorb the heat of working medium in the heat exchanger and become the low-pressure water steam; The heat of the working medium in the evaporimeter in the heat exchanger is absorbed the back temperature to be reduced, thereby becomes the externally cold of output of this absorption type heat pump system.(4) above-mentioned low-pressure water steam gets into absorber through vapor passageway; Absorbed and produced from the dense lithium-bromide solution in the generator and absorbed heat; The concentration of lithium-bromide solution reduces simultaneously; Described absorption heat is taken away outside heat supply by cooling working medium in the heat exchanger in the absorber, and the lithium-bromide solution of low concentration is circulated in the generator.
Existing absorption heating system needs complicated system architecture and outside high temperature driven thermal source for keeping the continuous heat supply process, thereby manufacturing cost and operating cost are higher.
Summary of the invention
Main purpose of the present invention is to provide a kind of heating system and heat supply method, and technical problem to be solved is to make it with simple structure, and need not to realize the absorption heating circulation under the condition of outside high temperature driven thermal source, thereby is suitable for practicality more.
The object of the invention and solve its technical problem and adopt following technical scheme to realize.According to a kind of heating system that the present invention proposes, it comprises: first storage tank, hold first solution, and in establish first heat exchanger; And second storage tank, hold second solution, and in establish second heat exchanger; Said first storage tank and second storage tank are communicated with by the gas passage; The saturated vapor pressure of the saturated vapor pressure of said first solution and the relation curve of temperature and said second solution and the relation curve of temperature have intersection point.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Preferably, aforesaid heating system, said first solution is unsaturated solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature.Preferable, said first solution is the aqueous solution of magnesium chloride, calcium chloride, zinc chloride, lithium chloride, lithium bromide or zinc bromide, perhaps the aqueous solution of two or more mixtures wherein.
Preferably, aforesaid heating system, said second solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature for containing the saturated solution of solute crystallization.Preferable, said second solution is the aqueous solution of lithium nitrate, magnesium chloride or calcium chloride.
The object of the invention and solve its technical problem and adopt following technical scheme to realize.A kind of heat supply method according to the present invention proposes comprises: first heat supplying process, and heat first solution and make it produce working substance steam, this working substance steam is absorbed to discharge by second solution and absorbs heat; And second heat supplying process, be the initial state of second heat supplying process with the final state of first heat supplying process, heat second solution and make it produce working substance steam, this working substance steam is absorbed to discharge by first solution and absorbs heat.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Preferably, aforesaid heat supply method, the saturated vapor pressure of the saturated vapor pressure of said first solution and the relation curve of temperature and said second solution and the relation curve of temperature have intersection point.
Preferably, aforesaid heat supply method, the corresponding saturated vapor pressure of described intersection point is less than the pressure of described first heat supplying process and greater than the pressure of described second heat supplying process.
Preferably, aforesaid heat supply method, said first solution is unsaturated solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature.
Preferably, aforesaid heat supply method before beginning first heat supplying process, carries out crystallisation by cooling and Separation of Solid and Liquid to said first solution, and the concentration of first solution in first heat supplying process is reduced.
Preferably, said first solution is the aqueous solution of magnesium chloride, calcium chloride, zinc chloride, lithium chloride, lithium bromide or zinc bromide, perhaps the aqueous solution of two or more mixtures wherein.
Preferably, aforesaid heat supply method, said second solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature for containing the saturated solution of solute crystallization.
Preferably, aforesaid heat supply method before beginning second heat supplying process, carries out crystallisation by cooling and Separation of Solid and Liquid to said second solution, and the concentration of second solution in second heat supplying process is reduced.
Preferably, aforesaid heat supply method, described second solution are the aqueous solution of lithium nitrate, magnesium chloride or calcium chloride.
The present invention compared with prior art has tangible advantage and beneficial effect.Can know that by above technical scheme heating system of the present invention has simple more structure and need not outside high temperature driven thermal source thermal source than existing absorption type heat pump heat distribution system, thereby can practice thrift manufacturing cost and operating cost.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.
Description of drawings
Fig. 1 is the flow chart of the heating system of the embodiment of the invention 1.
Fig. 2 is the saturated vapor pressure of first solution of the present invention and second solution and the graph of a relation of temperature.
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To the absorbent solution regenerative system that proposes according to the present invention and the specific embodiment, structure, characteristic and the effect thereof of heating system, specify as after.
Seeing also shown in Figure 1ly, is the flow chart of the heating system of the embodiment of the invention 1.The heating system of this embodiment comprises: first storage tank 10, second storage tank 20 and gas passage 30.Said first storage tank 10 is used to hold first solution, and in establish first heat exchanger 11; Said second storage tank 20 is used to hold second solution, and in establish second heat exchanger 21; Said first storage tank 10 and second storage tank 0 are communicated with 30 by the gas passage.As shown in Figure 2, the relation curve B of the relation curve A of the saturated vapor pressure of said first solution and temperature and the saturated vapor pressure of said second solution and temperature has intersection point.
Described first solution is the calcium chloride water of mass concentration 44%; Second solution is the lithium nitrate saturated aqueous solution that contains the lithium nitrate crystallization; The intersection point of the saturated vapor pressure of this first solution and second solution and the relation curve of temperature is about 28 ℃, and the pairing saturated vapor pressure of this intersection point is about 1.2kPa.
Embodiments of the invention 2 also propose a kind of heat supply method, adopt embodiment 1 described heating system, and described first solution adopts identical working medium and differing absorption agent with second solution.The relation curve B of the relation curve A of the saturated vapor pressure of said first solution and temperature and the saturated vapor pressure of said second solution and temperature has intersection point, and when promptly temperature was T0, the saturated vapor pressure of first solution was P0, and the saturated vapor pressure of second solution also is P0.This method comprises first heat supplying process and second heat supplying process.
First heat supplying process does, first pressure P 1 time, provides external heat source to heat first solution in first storage tank 10 through first heat exchanger 11.Because the saturated vapor pressure of first solution when temperature T 11 be P1, to make its generation pressure be the working substance steam of P1 so can under the T11 temperature, heat first solution.Because first storage tank 10 and second storage tank 20 have gas passage 30 to be communicated with, so first storage tank 10 has identical pressure P 1 with second storage tank.This first pressure P 1 time; In second storage tank 20; The working substance steam that is produced by first storage tank 10 gets in second storage tank through the gas passage; And this working substance steam is absorbed by second solution in second storage tank, discharges simultaneously to absorb heat, and this absorption heat is transferred to the user through second heat exchanger 21 to be utilized.Because during as saturated vapor pressure, second solution can be under the T12 working substance steam to be absorbed in temperature to second solution with pressure P 1, thereby the temperature of the absorption that is discharged heat is T12.Can heat first solution through the thermal source of temperature T 11 thus, obtain the absorption heat that temperature is T12, thereby realize the heat pump temperature rise of heat in second absorbent solution.
Along with constantly carrying out of first heat supplying process, the concentration of first solution constantly raises, and then need improve gradually the first heating solution temperature for the pressure that keeps first heat supplying process remains unchanged; Simultaneously; Along with second solution constantly absorbs working substance steam; Its concentration reduces gradually; The temperature of its absorption that is discharged when absorbing working substance steam heat also can reduce gradually, when the hot temperature of absorption to the first heating solution temperature and the release of second solution moves closer to a certain degree, stops first heat supplying process.
First solution when stopping with first heat supplying process and the concentration of second solution are as the initial concentration of second heat supplying process.Second heat supplying process does, second pressure P 2 times, provides external heat source to heat second solution in second storage tank 20 through second heat exchanger 21.Because the saturated vapor pressure of second solution when temperature T 21 be P2, to make it produce pressure be the working substance steam of P2 so can under the T21 temperature, heat second solution.Because first storage tank 10 and second storage tank 20 have gas passage 30 to be communicated with, so first storage tank 10 has identical pressure P 2 with second storage tank.This second pressure P 2 times; In first storage tank 10; The working substance steam that is produced by second storage tank 20 gets in first storage tank 10 through the gas passage; And this working substance steam is absorbed by first solution in first storage tank 10, discharges simultaneously to absorb heat, and this absorption heat is transferred to the user through first heat exchanger 11 to be utilized.Because during as saturated vapor pressure, first solution can be the absorption of carrying out under the T22 working medium solution in temperature to first solution with pressure P 2, the temperature of the absorption that is discharged heat is T22.Can heat second solution through the thermal source of temperature T 21 thus, obtain the absorption heat that temperature is T22, thereby realize the heat pump temperature rise of heat in first absorbent solution.
Because second solution is under lower temperature, to absorb heat from the outside in second heat supplying process, therefore, second heat supplying process also is the process of refrigerastion of realizing externally providing cold through second heat exchanger 21 in fact simultaneously.
In addition; The present invention can also be when carrying out second heat supplying process; The absorption hotwork that the first solution absorption working substance steam in first storage tank 10 is discharged is the thermal source that second solution produces working substance steam; Flow to second absorbent solution in second storage tank 20 through connecting first heat exchanger 11 and second heat exchanger 21, thereby realize the dilution of first solution and concentrating of second solution.When adopting this example second heat supplying process be actually be first heat supplying process provide a regeneration thermal source and regeneration low-temperature receiver self-supporting, that is to say the regenerative process that need not external heat source and external source.Certainly, first heat supplying process equally also can become the regenerative process of second heat supplying process.
Though the first above-mentioned heat supplying process and second heat supplying process all are the processes of external heat supply,, also be different so the temperature of heat externally is provided because the temperature of the external heat source that adopts is different.In fact, the temperature of the heat that outwards provides of second heat supplying process is less than the temperature of the external heat source that in first heat supplying process first solution is heated.So first heat supplying process is the heat supplying process that carries out to different application with second heat supplying process.
The first above-mentioned pressure P 1 is greater than pressure P 0, and second pressure P 2 is less than pressure P 0.Preferable; Described second solution is the saturated solution that contains the absorbent crystallization in first heat supplying process; It can guarantee when carrying out first heat supplying process, still can remain the saturated solution state even second solution constantly absorbs working substance steam, can under stable temperature, discharge to absorb heat.Preferable; Described first solution is the saturated solution that contains the absorbent crystallization in second heat supplying process; It can guarantee when carrying out second heat supplying process, still can remain the saturated solution state even first solution constantly absorbs working substance steam, can under stable temperature, discharge to absorb heat.
First solution that embodiments of the invention 2 adopt is the calcium chloride water of mass concentration 44%; Second solution is the lithium nitrate saturated aqueous solution that contains the lithium nitrate crystallization; The intersection point T0 of the saturated vapor pressure of this first solution and second solution and the relation curve of temperature is about 28 ℃, and the pairing saturated vapor pressure P0 of this intersection point is about 1.2kPa.First solution is in undersaturated condition under 28 ℃ temperature.First pressure P 1 of first heat supplying process is made as 19.5kPa; The temperature T 11 of the external heat source of supplying with through first heat exchanger 11 is 75 ℃; The hot temperature T 12 of absorption that externally provides through second heat exchanger 21 is about 100 ℃, has realized the heat pump temperature rise that external heat source is about 20 ℃ thus.
Along with the carrying out of first heat supplying process, the temperature T 11 of required external heat source raises gradually, when T11 reaches about 85 ℃, stops first heat supplying process and begins second heat supplying process.Second pressure P 2 of second heat supplying process of present embodiment is made as 0.6kPa; The temperature T 21 of the external heat source of supplying with through second heat exchanger 21 is 10 ℃; The hot temperature T 22 of absorption that externally provides through first heat exchanger 11 is about 20 ℃; Realized the heat pump temperature rise that external heat source is about 5 ℃ thus, first solution is the saturated aqueous solution that contains crystallization of calcium chloride under 20 ℃ temperature.Second heat supplying process also is the process of refrigerastion of realizing externally providing 10 ℃ of colds through second heat exchanger 21 in fact simultaneously.
In addition, embodiment 2 can also through connecting first heat exchanger 11 and second heat exchanger 21, carry out the dilution of first solution and concentrating of second solution when carrying out second heat supplying process.At this moment, second heat supplying process be actually be first heat supplying process provide a regeneration thermal source and regeneration low-temperature receiver self-supporting, that is to say the regenerative process that need not external heat source and external source.
First solution that embodiments of the invention 3 adopt is the calcium chloride water of mass concentration 55%; Second solution is the lithium nitrate saturated aqueous solution that contains the lithium nitrate crystallization; The intersection point T0 of the saturated vapor pressure of this first solution and second solution and the relation curve of temperature is about 55 ℃; The pairing saturated vapor pressure P0 of this intersection point is about 3.5kPa, and first solution is in undersaturated condition under 55 ℃ temperature.Be with the difference of embodiment 2; Present embodiment is before beginning first heat supplying process; Adopt external source first solution to be cooled to about 0 ℃, make calcium chloride generation supersaturation crystallization, crystallization of calcium chloride is moved to outside first storage tank 10 through Separation of Solid and Liquid through first heat exchanger 11.At this moment, first solution in first storage tank 10 contains the calcium chloride of mass concentration 37% approximately.Present embodiment is 75 ℃ through the temperature T 11 of the external heat source that first heat exchanger 11 is supplied with, and the hot temperature T 12 of absorption that externally provides through second heat exchanger 21 is about 110 ℃, has realized the heat pump temperature rise that external heat source is about 30 ℃ thus.
Embodiments of the invention 4 adopt first solution and second solution identical with the foregoing description 3; Be with the difference of embodiment 2; Present embodiment is before beginning second heat supplying process; Adopt external source second solution to be cooled to about 0 ℃, make lithium nitrate generation supersaturation crystallization, the lithium nitrate crystallization is moved to outside second storage tank 20 through Separation of Solid and Liquid through second heat exchanger 21.At this moment, second solution in second storage tank 20 contains the lithium nitrate of mass concentration 33% approximately.Present embodiment is 10 ℃ through the temperature T 21 of the external heat source that second heat exchanger 21 is supplied with; The hot temperature T 22 of absorption that externally provides through first heat exchanger 11 is about 28 ℃; First solution for containing the saturated aqueous solution of crystallization of calcium chloride, has been realized the heat pump temperature rise that external heat source is about 13 ℃ thus under 28 ℃ temperature.
First solution that embodiments of the invention 5 adopt is the lithium chloride aqueous solution of mass concentration 43%; Second solution is the calcium chloride saturated aqueous solution that contains crystallization of calcium chloride; The intersection point T0 of the saturated vapor pressure of this first solution and second solution and the relation curve of temperature is about 63 ℃, and the pairing saturated vapor pressure P0 of this intersection point is about 4.0kPa.First solution is in undersaturated condition under 63 ℃ temperature.First pressure P 1 of first heat supplying process is made as 9.5kPa, and the temperature T 11 of the external heat source of supplying with through first heat exchanger 11 is 80 ℃, and the temperature T 12 of the absorption heat that externally provides through second heat exchanger 21 is about 85 ℃.Present embodiment through connecting first heat exchanger 11 and second heat exchanger 21, carries out the dilution of concentrated and second solution of first solution when carrying out first heat supplying process.Therefore, first heat supplying process be actually be second heat supplying process provide a regeneration thermal source and regeneration low-temperature receiver self-supporting, that is to say the regenerative process that need not external heat source and external source.
Present embodiment adopted external source through second heat exchanger 21 second solution to be cooled to about-10 ℃ before beginning second heat supplying process, made calcium chloride generation supersaturation crystallization, through Separation of Solid and Liquid the crystallization of calcium chloride lithium was moved to outside second storage tank 20.At this moment, second solution in second storage tank 20 contains the calcium chloride of mass concentration 35% approximately.Second pressure P 2 of present embodiment second heat supplying process is made as 0.5kPa; The temperature T 21 of the external heat source of supplying with through second heat exchanger 21 is 7 ℃; The hot temperature T 22 of absorption that externally provides through first heat exchanger 11 is about 28 ℃, has realized the heat pump temperature rise that external heat source is about 16 ℃ thus.Second heat supplying process of present embodiment also is the process of refrigerastion of realizing externally providing 7 ℃ of colds through second heat exchanger 21 in fact simultaneously.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (14)
1. heating system is characterized in that it comprises:
First storage tank holds first solution, and in establish first heat exchanger; And
Second storage tank holds second solution, and in establish second heat exchanger;
Said first storage tank and second storage tank are communicated with by the gas passage;
The saturated vapor pressure of the saturated vapor pressure of said first solution and the relation curve of temperature and said second solution and the relation curve of temperature have intersection point.
2. heating system according to claim 1 is characterized in that said first solution is unsaturated solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature.
3. according to each described heating system of claim 1-2, it is characterized in that said first solution is the aqueous solution of magnesium chloride, calcium chloride, zinc chloride, lithium chloride, lithium bromide or zinc bromide, perhaps the aqueous solution of two or more mixtures wherein.
4. heating system according to claim 1, it is characterized in that said second solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature for containing the saturated solution of solute crystallization.
5. according to claim 1 or 4 described heating systems, it is characterized in that said second solution is the aqueous solution of lithium nitrate, magnesium chloride or calcium chloride.
6. a heat supply method is characterized in that, adopts each described heating system of claim 1-5 to carry out this method, comprising:
First heat supplying process heats first solution and makes it produce working substance steam, and this working substance steam is absorbed to discharge by second solution and absorbs heat; And
Second heat supplying process is the initial state of second heat supplying process with the final state of first heat supplying process, heats second solution and makes it produce working substance steam, and this working substance steam is absorbed to discharge by first solution and absorbs heat.
7. heat supply method according to claim 6 is characterized in that the saturated vapor pressure of said first solution and the relation curve of temperature and the saturated vapor pressure of said second solution and the relation curve of temperature have intersection point.
8. heat supply method according to claim 7 is characterized in that the corresponding saturated vapor pressure of described intersection point is less than the pressure of described first heat supplying process and greater than the pressure of described second heat supplying process.
9. heat supply method according to claim 7 is characterized in that said first solution is unsaturated solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature.
10. heat supply method according to claim 9 is characterized in that before beginning first heat supplying process, said first solution being carried out crystallisation by cooling and Separation of Solid and Liquid, and the concentration of first solution in first heat supplying process is reduced.
11. according to each described heating system of claim 9-10, it is characterized in that said first solution is the aqueous solution of magnesium chloride, calcium chloride, zinc chloride, lithium chloride, lithium bromide or zinc bromide, perhaps the aqueous solution of two or more mixtures wherein.
12. heat supply method according to claim 7, it is characterized in that said second solution under the temperature of the intersection point of the relation curve of the saturated vapor pressure of said first solution and second solution and temperature for containing the saturated solution of solute crystallization.
13. heat supply method according to claim 12 is characterized in that before beginning second heat supplying process, said second solution being carried out crystallisation by cooling and Separation of Solid and Liquid, and the concentration of second solution in second heat supplying process is reduced.
14., it is characterized in that said second solution is the aqueous solution of lithium nitrate, magnesium chloride or calcium chloride according to each described heat supply method of claim 12-13.
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| CN200910301868A CN101871672B (en) | 2009-04-27 | 2009-04-27 | Heat supply system and heat supply method |
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| CN101871672B true CN101871672B (en) | 2012-09-05 |
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| CN107606686B (en) * | 2016-12-23 | 2019-11-08 | 北京金房暖通节能技术股份有限公司 | A kind of heating system and method for thermodynamic equilibrium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617733A (en) * | 1994-09-20 | 1997-04-08 | Hitachi, Ltd. | Absorbing type water cooling-heating apparatus |
| JP2004101138A (en) * | 2002-09-12 | 2004-04-02 | Tokyo Electric Power Co Inc:The | Heat pump using gas hydrate and heat using device |
| CN1641292A (en) * | 2004-01-06 | 2005-07-20 | 聂红军 | Absorption refrigerator |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617733A (en) * | 1994-09-20 | 1997-04-08 | Hitachi, Ltd. | Absorbing type water cooling-heating apparatus |
| JP2004101138A (en) * | 2002-09-12 | 2004-04-02 | Tokyo Electric Power Co Inc:The | Heat pump using gas hydrate and heat using device |
| CN1641292A (en) * | 2004-01-06 | 2005-07-20 | 聂红军 | Absorption refrigerator |
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