CN102798248A - Low-temperature heat source efficient absorption refrigerator and refrigeration method thereof - Google Patents
Low-temperature heat source efficient absorption refrigerator and refrigeration method thereof Download PDFInfo
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- CN102798248A CN102798248A CN2012102827077A CN201210282707A CN102798248A CN 102798248 A CN102798248 A CN 102798248A CN 2012102827077 A CN2012102827077 A CN 2012102827077A CN 201210282707 A CN201210282707 A CN 201210282707A CN 102798248 A CN102798248 A CN 102798248A
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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
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- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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Abstract
The invention discloses a low-temperature heat source efficient absorption refrigerator and a refrigeration method thereof. The low-temperature heat source efficient absorption refrigerator comprises a generator, a condenser, an evaporator, an absorber, a compressor 1, a compressor II, a cooling water pipe I, a cooling water pipe II, a cold water pipe and a heat source, wherein the generator is connected with the compressor I by a pipeline I, the compressor I is connected with the condenser by a pipeline II, the bottom of the generator is provided with a pipeline 7 connected with a spraying device in the absorber, the condenser is connected with the evaporator by a pipeline 3, the evaporator is connected with the compressor II by a pipeline 4, the compressor II is connected with the absorber by a pipeline 5, the absorber is connected with the generator by a pipeline 6, the cooling water pipe I is arranged in the condenser, the cold water pipe is arranged in the evaporator, the cooling water pipe II and the spraying device are arranged in the absorber, and the heat source is arranged outside the generator. According to the low-temperature heat source efficient absorption refrigerator, the compressors I and II are arranged between the generator and the evaporator and between the evaporator and the absorber of the low-grade-energy drive CO2 absorption refrigeration system, the pressure intensity in the generator and the evaporator is reduced while the pressure intensity in the condenser and the absorber is increased due to the action of the condenser, so that liquid turns into gas or gas turns into liquid more easily. Therefore, the requirements on the temperature of the heat source of the generator and the temperature of cooling water in the condenser are reduced, so that refrigeration circulation can be carried out with the temperature of the heat source not necessarily high and the temperature of the cooling water not necessarily low, the heat energy consumption is reduced and the efficiency is increased, the temperature of the whole circulation process is increased, and the equipment is effectively prevented from being corroded by a lithium bromide solution at the high temperature.
Description
Technical field
The Absorption Refrigerator that the present invention relates to send out a kind of particularly relates to low-temperature heat source high-efficiency absorption refrigeration machine.
The invention still further relates to the refrigerating method that uses above-mentioned refrigeration machine.
Background technology
Absorption Refrigerator is power with heat energy normally, is that cold-producing medium, lithium-bromide solution are absorbent with water in the prior art, utilizes principle of absorption to realize freezing.It is made up of a plurality of parts such as generator, condenser, evaporimeter, absorber and heat exchangers.Can be divided into steam type, direct combustion type, hot-water type etc. by the driving heat source kind.For low temperature (below 100 ℃) hot water as driving heat source, single-effective absorption refrigerating machine commonly on the market, to utilize refrigeration machine to use for spent hot water below 100 ℃ in industry comparatively general.But owing to self limiting of single-effective absorption refrigerating machine; Heat transfer area by 100% (specific refrigerating effect heat transfer area); The temperature requirement of general thermal source hot water is than higher, and the temperature of the heat source water of sending is higher than 80 ℃, like this for adopting higher temperature hot water; And discharging high temperature waste hot water, utilize conventional single-action unit to use and have following shortcoming:
(1) thermal source requires too high: thermal source must adopt uniform temperature, as be higher than 90 ℃ waste heat source water could be with the water evaporates in the lithium-bromide solution, and many cost of living thermals source can not be used effectively under the situation of lower temperature, for example 40-90 ℃ thermal source.
(2) conversion efficiency of thermal source is low: because liquid becomes gas in generator and evaporimeter; Therefore reduced pressure in generator and the evaporimeter; Make liquid become gas difficulty more, in like manner in condenser and absorber, change liquid into owing to gas, pressure reduces; Further become liquid thereby hinder gas, therefore make whole conversion efficiency reduce.
(3) because operating temperature is too high, therefore cause lithium bromide more serious to equipment corrosion.
(4) can't make full use of and absorbed the cooling water that temperature that gas converts the liquid heat into raises.
Summary of the invention
Technique effect of the present invention can overcome above-mentioned defective, and a kind of low-temperature heat source high-efficiency absorption refrigeration machine is provided, and its rate of thermal water utilization improves greatly, has reduced the discharging thermal pollution simultaneously, has reduced lithium-bromide solution for corrosion on Equipment, helps environmental protection.
For realizing above-mentioned purpose, the present invention adopts following technical scheme: it comprises generator, condenser, evaporimeter, absorber, compressor 1, compressor 2, cooling water pipe 1, cooling water pipe 2, cold water pipe, thermal source low-temperature heat source high-efficiency absorption refrigeration machine of the present invention, and wherein said generator is connected with compressor 1 through pipeline 1; Compressor 1 is connected with condenser through pipeline 2; Generator bottom has pipeline 7 and links to each other with spray equipment in the absorber, and condenser passes through pipeline 3 and is connected with evaporimeter, and evaporimeter passes through pipeline 4 and is connected with compressor 2; Compressor 2 is connected with absorber through pipeline 5; Absorber links to each other with generator through pipeline 6, is mounted with cooling water pipe 1 in the condenser, is mounted with cold water pipe in the evaporimeter; Be mounted with cooling water pipe 2, spray equipment in the absorber, the generator outer setting has thermal source.
Said thermal source is a low-temperature heat source.
The temperature of said low-temperature heat source is less than 100 ℃.
Said temperature is preferably at 25 ℃ to 90 ℃.
Said temperature is more preferably at 40 ℃ to 70 ℃.
Said low-temperature heat source is selected from the cooling water behind the absorption heat of discharging in life used heat, industrial waste heat, ocean thermal gradients, solar energy, underground heat or the condenser.
Utilize the refrigerating method of above-mentioned low-temperature heat source high-efficiency absorption refrigeration machine, its characteristic may further comprise the steps:
A, add heater through thermal source, make the vaporizing liquid in the bromize lithium dilute solution in the generator, steam gets into condensers through pipeline 1, pipeline 2; Steam runs into cooling water pipe 1 in condenser, emits heat, becomes drop; Cooling water in the cooling water pipe 1 has absorbed steam liberated heat rising temperature; Compressor 1 makes pressure reduction in the generator, and the pressure increase promotes that liquid becomes gas in the generator in the condenser thereby make, and promotes that gas becomes liquid in the condenser;
Drop in B, the condenser gets into evaporimeter through pipeline 3, because droplet evaporation absorbs heat in the evaporimeter, realizes refrigeration;
Steam in C, the condenser gets into absorber through pipeline 4, pipeline 5; Bromize lithium concentrated solution by the spray thrower spray absorbs; Change liquid state into and with the cooling water the heat transferred cooling water pipe 2 from gaseous state; Compressor 2 makes pressure reduction in the evaporimeter, thereby the pressure rising promotes that liquid becomes gas in the evaporimeter in the absorber, and gas becomes liquid in the absorber;
Bromize lithium concentrated solution in D, the absorber becomes bromize lithium dilute solution after absorbing steam, and is transported to generator once more through pipeline 6, accomplishes circulation.
Lithium-bromide solution is preferably the aqueous solution of lithium bromide among the present invention, and its concentration value does not have special qualification.
Because the present invention is provided with compressor 1 between generator and condenser; Between absorber and evaporimeter, be provided with compressor 2; Compressor 1 makes pressure reduction in the generator; Promote that liquid becomes gas in the generator thereby pressure is increased, and promote that gas becomes liquid in the condenser, reduced therefore that solution evaporates needed temperature in the generator; Make that lithium-bromide solution can be vaporized in the generator under lower heating-up temperature, under the lower situation of temperature, also reduced the corrosion of lithium-bromide solution for the refrigeration machine device; Compressor 1 impels the gas in the condenser to condense more easily simultaneously; Thereby reduced temperature requirement for cooling water; The water that can use higher temperature is as cooling water; Wherein transfer of heat is to low-temperature heat source after cooling water absorption heat temperature raises, can to pass through heat pump techniques simultaneously, and the formation recycle reduces energy resource consumption and raises the efficiency.Compressor 2 makes pressure increase in the absorber; Thereby pressure reduces and promotes that liquid becomes gas in the evaporimeter in the evaporimeter; Gas becomes liquid in the absorber; Therefore it can reduce the requirement for cooling water temperature equally, after cooling water absorbs heat rising temperature, can utilize heat pump techniques that transfer of heat is heated generator to low-temperature heat source, forms the heat recycle and increases efficient.
Therefore technique effect of the present invention has overcome above-mentioned defective of the prior art; Make low-temperature heat source high-efficiency absorption refrigeration function turn round at a lower temperature; Improved Btu utilization efficient; And effectively reduce the corrosion of lithium bromide for the refrigeration machine device, reached purpose energy-conservation, that lower consumption, reduce discharging.
Description of drawings
Fig. 1 low-temperature heat source high-efficiency absorption of the present invention refrigeration machine embodiment sketch map.
The figure number explanation
1 ... Generator; 2 ... Pipeline 1; 3 ... Compressor 1; 4 ... Pipeline 2; 5 ... Condenser; 6 ... Cooling water pipeline 1; 7 ... Pipeline 3; 8 ... Evaporimeter; 9 ... Cold water pipes; 10 ... Pipeline 4; 11 ... Compressor 2; 12 ... Pipeline 5; 13 ... Absorber; 14 cooling water pipelines 2; 15 ... Spray equipment; 16 ... Pipeline 7; 17 ... Pipeline 6; 18 ... Thermal source.
The specific embodiment
Below in conjunction with Fig. 1 of accompanying drawing to low-temperature heat source high-efficiency absorption refrigeration machine of the present invention with utilize the method that this refrigeration machine freezes to do further explain.
Low-temperature heat source high-efficiency absorption refrigeration machine of the present invention; Please refer to Fig. 1, comprise generator (1), condenser (5), evaporimeter (8), absorber (13), compressor 1 (3), compressor 2 (11), cooling water pipe 1 (6), cooling water pipe 2 (14), cold water pipe (9), thermal source (18), wherein said generator is connected with compressor 1 (3) through pipeline 1 (2); Compressor 1 (3) is connected with condenser (5) through pipeline 2 (4); Generator (1) bottom has pipeline 7 (16) and links to each other with spray equipment (15) in the absorber (13), and condenser (5) passes through pipeline 3 (7) and is connected (8) with evaporimeter, and evaporimeter (8) passes through pipeline 4 (10) and is connected with compressor 2 (11); Compressor 2 (11) is connected with absorber (13) through pipeline 5 (12); Absorber (13) links to each other with generator (1) through pipeline 6 (17), is mounted with cooling water pipe 1 (6) in the condenser (5), is mounted with cold water pipes (9) in the evaporimeter (8); Be mounted with cooling water pipe 2 (14), spray equipment (15) in the absorber (13), generator (1) outer setting has thermal source (18).
In an optimal technical scheme of the present invention, thermal source is a low-temperature heat source, in further preferred version heat source temperature less than 100 ℃, preferably at 25 ℃ to 90 ℃, more preferably 40 ℃ to 70 ℃.。
The low-temperature heat source cooling water behind the heat that has been selected from the absorption of discharging in life used heat, industrial waste heat, ocean thermal gradients, solar energy, underground heat or the condenser of the present invention wherein.
The invention also discloses the method for utilizing above-mentioned low-temperature heat source high-efficiency absorption refrigeration machine refrigeration, with reference to figure 1, it may further comprise the steps:
A, add heater (1) through thermal source (18); Make the vaporizing liquid in the bromize lithium dilute solution in the generator (1), steam gets into condensers (5) through pipeline 1 (2), pipeline 2 (4), and steam runs into cooling water pipe 1 (6) in condenser (5); Emit heat; Become drop, the cooling water in the cooling water pipe 1 (6) has absorbed steam liberated heat rising temperature, and compressor 1 (3) makes pressure reduction in the generator (1); Make condenser (5) thus in pressure increase to promote that liquid becomes gas in the generator (1), and promote that gas becomes liquid in the condenser (5);
Drop in B, the condenser (5) gets into evaporimeter (8) through pipeline 3 (7), because droplet evaporation absorbs heat in the evaporimeter (8), realizes refrigeration;
Steam in C, the condenser (5) gets into absorber (13) through pipeline 4 (10), pipeline 5 (12); Bromize lithium concentrated solution by spray equipment (15) spray absorbs; Change liquid state into and with the cooling water the heat transferred cooling water pipe 2 (14) from gaseous state; Compressor 2 (11) makes that pressure reduces in the evaporimeter (8), absorber (13) thus in pressure raise and promote that liquid becomes gas in the evaporimeter (8), gas becomes liquid in the absorber (13);
Bromize lithium concentrated solution in D, the absorber (13) becomes bromize lithium dilute solution after absorbing steam, and is transported to generator (1) once more through pipeline 6 (17), accomplishes circulation.
In the said method, wherein low-temperature heat source temperature is 25 ℃
Other condition is constant in another embodiment of the present invention, and heat source temperature is 70 ℃, accomplishes above-mentioned kind of refrigeration cycle.
In optimal technical scheme of the present invention, other condition is constant, and heat source temperature is 40 ℃ and accomplishes above-mentioned kind of refrigeration cycle.
Above-mentionedly only several kinds of specific embodiments among the present invention are explained; But can not be as protection scope of the present invention; Every equivalence variation of having done according to the design spirit among the present invention or modification or equal proportion are amplified or are dwindled etc., all should think to fall into protection scope of the present invention.
Claims (7)
1. low-temperature heat source high-efficiency absorption refrigeration machine, it is characterized in that: said low-temperature heat source high-efficiency absorption refrigeration machine comprises generator, condenser, evaporimeter, absorber, compressor 1, compressor 2, cooling water pipe 1, cooling water pipe 2, cold water pipe, thermal source, wherein said generator is connected with compressor 1 through pipeline 1; Compressor 1 is connected with condenser through pipeline 2; Generator bottom has pipeline 7 and links to each other with spray equipment in the absorber, and condenser passes through pipeline 3 and is connected with evaporimeter, and evaporimeter passes through pipeline 4 and is connected with compressor 2; Compressor 2 is connected with absorber through pipeline 5; Absorber links to each other with generator through pipeline 6, is mounted with cooling water pipe 1 in the condenser, is mounted with cold water pipe in the evaporimeter; Be mounted with cooling water pipe 2, spray equipment in the absorber, the generator outer setting has thermal source.
2. low-temperature heat source high-efficiency absorption refrigeration machine according to claim 1 is characterized in that: said thermal source is a low-temperature heat source.
3. low-temperature heat source high-efficiency absorption refrigeration machine according to claim 2, it is characterized in that: the temperature of said low-temperature heat source is less than 100 ℃.
4. low-temperature heat source high-efficiency absorption refrigeration machine according to claim 3 is characterized in that: said temperature is preferably at 25 ℃ to 90 ℃.
5. low-temperature heat source high-efficiency absorption refrigeration machine according to claim 4 is characterized in that: said temperature is preferably at 40 ℃ to 70 ℃.
6. low-temperature heat source high-efficiency absorption refrigeration machine according to claim 2 is characterized in that: low-temperature heat source is selected from the cooling water behind the absorption heat of discharging in life used heat, industrial waste heat, ocean thermal gradients, solar energy, underground heat or the condenser.
7. refrigerating method that utilizes the arbitrary said low-temperature heat source high-efficiency absorption refrigeration machine of claim 1-6, its characteristic may further comprise the steps:
A, add heater through thermal source, make the vaporizing liquid in the bromize lithium dilute solution in the generator, steam gets into condensers through pipeline 1, pipeline 2; Steam runs into cooling water pipe 1 in condenser, emits heat, becomes drop; Cooling water in the cooling water pipe 1 has absorbed steam liberated heat rising temperature; Compressor 1 makes pressure reduction in the generator, and the pressure increase promotes that liquid becomes gas in the generator in the condenser thereby make, and promotes that gas becomes liquid in the condenser;
Drop in B, the condenser gets into evaporimeter through pipeline 3, because droplet evaporation absorbs heat in the evaporimeter, realizes refrigeration;
Steam in C, the condenser gets into absorber through pipeline 4, pipeline 5; Bromize lithium concentrated solution by the spray thrower spray absorbs; Change liquid state into and with the cooling water the heat transferred cooling water pipe 2 from gaseous state; Compressor 2 makes pressure reduction in the evaporimeter, thereby the pressure rising promotes that liquid becomes gas in the evaporimeter in the absorber, and gas becomes liquid in the absorber;
Bromize lithium concentrated solution in D, the absorber becomes bromize lithium dilute solution after absorbing steam, and is transported to generator once more through pipeline 6, accomplishes circulation.
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| CN2012102827077A CN102798248A (en) | 2012-08-10 | 2012-08-10 | Low-temperature heat source efficient absorption refrigerator and refrigeration method thereof |
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| CN2012102827077A CN102798248A (en) | 2012-08-10 | 2012-08-10 | Low-temperature heat source efficient absorption refrigerator and refrigeration method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806956A (en) * | 2013-04-11 | 2014-05-21 | 苟仲武 | Improved absorption type heat-pump type steam extraction turbine power generation system and power generation method thereof |
| CN104101131A (en) * | 2013-04-11 | 2014-10-15 | 苟仲武 | Absorption refrigerator for refrigerating and heating by using recovered heat energy and refrigerating and heating method thereof |
| CN105423614A (en) * | 2015-12-23 | 2016-03-23 | 珠海格力电器股份有限公司 | Compression type absorption refrigerating unit and control method thereof |
| CN109612158A (en) * | 2018-11-26 | 2019-04-12 | 江苏科技大学 | A kind of compression combined formula high temperature heat pump system of lithium bromide absorption and working method |
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| CN101644506A (en) * | 2009-08-25 | 2010-02-10 | 刘辉 | Compression-absorption type refrigerating machine |
| US20100282436A1 (en) * | 2008-01-22 | 2010-11-11 | Beijing Lianliyuan Technology Co., Ltd. | Absorptive heat pump systems and heating method |
| CN102230686A (en) * | 2011-06-12 | 2011-11-02 | 浙江理工大学 | Lithium bromide absorption-compression type series boosting refrigeration/heating pump system |
| CN202770047U (en) * | 2012-08-10 | 2013-03-06 | 苟仲武 | Low-temperature heat source efficient absorption refrigerator |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201050463Y (en) * | 2007-06-12 | 2008-04-23 | 谢育生 | Air compressor residual heat hot water, hot water machine set |
| US20100282436A1 (en) * | 2008-01-22 | 2010-11-11 | Beijing Lianliyuan Technology Co., Ltd. | Absorptive heat pump systems and heating method |
| CN101644506A (en) * | 2009-08-25 | 2010-02-10 | 刘辉 | Compression-absorption type refrigerating machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806956A (en) * | 2013-04-11 | 2014-05-21 | 苟仲武 | Improved absorption type heat-pump type steam extraction turbine power generation system and power generation method thereof |
| CN104101131A (en) * | 2013-04-11 | 2014-10-15 | 苟仲武 | Absorption refrigerator for refrigerating and heating by using recovered heat energy and refrigerating and heating method thereof |
| CN105423614A (en) * | 2015-12-23 | 2016-03-23 | 珠海格力电器股份有限公司 | Compression type absorption refrigerating unit and control method thereof |
| CN109612158A (en) * | 2018-11-26 | 2019-04-12 | 江苏科技大学 | A kind of compression combined formula high temperature heat pump system of lithium bromide absorption and working method |
| CN109612158B (en) * | 2018-11-26 | 2020-12-29 | 江苏科技大学 | Lithium bromide absorption and compression combined type high-temperature heat pump system and working method |
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Application publication date: 20121128 |