CN101737998A - Absorption type refrigerating unit for fully recovering waste heat - Google Patents

Absorption type refrigerating unit for fully recovering waste heat Download PDF

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Publication number
CN101737998A
CN101737998A CN200910155853A CN200910155853A CN101737998A CN 101737998 A CN101737998 A CN 101737998A CN 200910155853 A CN200910155853 A CN 200910155853A CN 200910155853 A CN200910155853 A CN 200910155853A CN 101737998 A CN101737998 A CN 101737998A
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low
temperature
absorber
outlet
pressure absorber
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CN101737998B (en
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陈光明
洪大良
唐黎明
何一坚
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Zhejiang University ZJU
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Zhejiang University ZJU
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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
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • 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
    • Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The invention discloses an absorption type refrigerating unit for fully recovering waste heat. The gas phase outlet of a generator is sequentially connected with a condenser, a first throttling element, a high-temperature evaporator, a second throttling element and a low-temperature evaporator; the outlet of the low-temperature evaporator is divided into two paths, wherein one path is connected with a low-pressure high-temperature absorber, and the other path is connected with a low-temperature low-pressure absorber; the high-temperature evaporator is arranged in the low-temperature low-pressure absorber; the outlet of the low-pressure high-temperature absorber returns to the low-temperature low-pressure absorber, and the low-temperature low-pressure absorber is sequentially connected with a first solution pump, a heat exchanger and the generator; and the liquid phase outlet of the generator is sequentially connected with the heat exchanger, a third throttling element and the low-pressure high-temperature absorber. The refrigerating capacity obtained by the absorption type refrigerating unit of the invention from unit mass of waste gas or waste water is higher than the refrigerating capacity obtained by the traditional single-effect absorption type refrigerating unit.

Description

A kind of absorption type refrigerating unit that is used for fully recovering waste heat
Technical field
The invention belongs to refrigeration technology field, refer more particularly to a kind of absorption type refrigerating unit that is used for fully recovering waste heat.
Background technology
Sorption type refrigerating technology is the Refrigeration Technique that a kind of heat energy drives, and comparing its major advantage with the compression-type refrigeration technology is the mechanical energy that only needs to consume seldom, can utilize the lower heat energy of grade.At a large amount of high-temp waste gas, the waste water that are discharged that exist of industrial quarters, sorption type refrigerating technology can utilize these used heat to produce cold at present.But also there are various problems, owing to can directly emit after as the waste gas of thermal source or waste water heat being passed to generator, so the cold that thermal source unit mass flow is produced is a very important evaluation index.Just adopt the most general single-action and the absorption type refrigerating unit of two-stage at present, in order to produce the cold under certain temperature, the heat source temperature that the single-effective absorption refrigerating plant needs is higher, therefore more low-grade heat that waste gas or waste water comprised can't be fully utilized, though the two-stage absorption kind of refrigeration cycle can be utilized the more low-grade cold of waste gas or waste water the inside, but its coefficient of performance is very low, more is unfavorable for the high-grade heat that effectively utilizes waste gas or waste water the inside to comprise.Therefore these two kinds of devices utilized heat energy that all can not fully effectively utilize waste gas or waste water and comprised is to produce more cold.
Summary of the invention
The invention provides a kind of absorption type refrigerating unit that efficiently makes full use of tow taste heat, make unit mass waste gas or waste water produce more refrigeration capacity.
A kind of absorption type refrigerating unit that is used for fully recovering waste heat, the gaseous phase outlet of generator is connected with condenser, first throttle element, high-temperature evaporator, second restricting element, cryogenic vaporizer successively, the outlet of cryogenic vaporizer is divided into two-way, one the tunnel is connected with the low-voltage high-temperature absorber, and one the tunnel is connected with the low-temp low-pressure absorber; Described high-temperature evaporator is located at low-temp low-pressure absorber inside; The low-temp low-pressure absorber is returned in the outlet of low-voltage high-temperature absorber, and the low-temp low-pressure absorber is connected with first solution pump, heat exchanger and generator successively; The liquid phase outlet of generator is connected with heat exchanger, the 3rd restricting element, low-voltage high-temperature absorber successively.
The refrigerant vapour of cryogenic vaporizer outlet can mix with the solution of low-voltage high-temperature absorber outlet in advance flow to again afterwards that the low-temp low-pressure absorber also can be independent separately flow to the low-temp low-pressure absorber.
High-temperature evaporator is located at low-temp low-pressure absorber inside, and the cold that high-temperature evaporator is produced is mainly used to balance low-pressure low-temperature absorber institute liberated heat, makes the low-pressure low-temperature absorber can absorb the refrigerant vapour from the cryogenic vaporizer outlet.
As a kind of preferred, be provided with gas-liquid separator between the high-temperature evaporator and second restricting element; Be provided with high pressure absorber, second solution pump between first solution pump and the heat exchanger; High-temperature evaporator is connected with gas-liquid separator; The liquid phase outlet of gas-liquid separator is connected with second restricting element; First solution pump is connected successively with high pressure absorber, second solution pump, heat exchanger; The gaseous phase outlet of gas-liquid separator is connected with high pressure absorber, can optimization system efficient.
As a kind of optimal selection, between hypotonic solution pump and high pressure absorber, be provided with the solution regenerator; The outlet of low-voltage high-temperature absorber is returned the low-temp low-pressure absorber by the solution regenerator, further optimization system efficient.
Compare traditional single-effective absorption refrigerating plant, the evaporating pressure of the absorption pressure lower temperature evaporimeter of high pressure absorber of the present invention is much higher, therefore absorbing end of a period solution has higher refrigerant concentration, thereby it is low far beyond traditional single-effective absorption refrigerating plant to make that this device has the used heat of making discharge temperature after utilization.Solution in the outlet of low-voltage high-temperature absorber can further absorb the refrigerant vapour that exports from cryogenic vaporizer in the low-pressure low-temperature absorber, therefore the absorbent of specific discharge enough absorbs the more low-pressure steam of traditional relatively single-action device, makes many far beyond traditional single-effective absorption refrigerating plant of the refrigerant flow that flows to cryogenic vaporizer; It is cold excessively that the cold-producing medium that flows to second restricting element is in addition also flowed to the high-pressure refrigerant vapor of high pressure absorber, and therefore the refrigerating capacity of unit low pressure evaporator is will more traditional single-effective absorption refrigerating plant much higher in the device of the present invention; Since in apparatus of the present invention in low pressure evaporator all more traditional single-effective absorption refrigerating plant of refrigerating capacity of the refrigerant flow of sweat cooling and specific discharge much higher, thereby make the waste gas of apparatus of the present invention unit mass or the more traditional single-effective absorption refrigerating plant of cold that waste water can be produced much higher.
Description of drawings
Fig. 1 is a kind of enforceable system flow charts of apparatus of the present invention;
Fig. 2 is a kind of preferred systems flow charts of apparatus of the present invention;
Fig. 3 is a kind of most preferred system flow charts of apparatus of the present invention;
Wherein generator 1, condenser 2, first throttle element 3, high-temperature evaporator 4, low-pressure low-temperature absorber 5, gas-liquid separator 6, second restricting element 7, cryogenic vaporizer 8, low-voltage high-temperature absorber 9, solution regenerator 10, first solution pump 11, high pressure absorber 12, second solution pump 13, solution heat exchanger 14, the 3rd restricting element 15.
The specific embodiment
As shown in Figure 1, a kind of absorption type refrigerating unit that is used for fully recovering waste heat, the gaseous phase outlet of generator 1 is connected 8 with condenser 2, first throttle element 3, high-temperature evaporator 4, second restricting element 7, cryogenic vaporizer successively, the outlet of cryogenic vaporizer 8 is divided into two-way, one the tunnel is connected with low-voltage high-temperature absorber 9, and one the tunnel is connected with low-temp low-pressure absorber 5; Described high-temperature evaporator 4 is located at low-temp low-pressure absorber 5 inside; Low-temp low-pressure absorber 5 is returned in the outlet of low-voltage high-temperature absorber 9, and low-temp low-pressure absorber 5 is connected with first solution pump 11, heat exchanger 14 and generator 1 successively; The liquid phase outlet of generator 1 is connected with heat exchanger 14, the 3rd restricting element 15, low-voltage high-temperature absorber 9 successively.
As shown in Figure 2, a kind of absorption type refrigerating unit that preferably is used for fully recovering waste heat on the basis of device shown in Figure 1, is provided with gas-liquid separator 6 between the high-temperature evaporator 4 and second restricting element 7; Be provided with high pressure absorber 12, second solution pump 13 between first solution pump 11 and the heat exchanger 14; High-temperature evaporator 4 is connected with gas-liquid separator 6; The liquid phase outlet of gas-liquid separator 6 is connected with second restricting element 7; First solution pump 11 is connected successively with high pressure absorber 12, second solution pump 13, heat exchanger 14; The gaseous phase outlet of gas-liquid separator 6 is connected with high pressure absorber 12.
As shown in Figure 3, a kind of absorption type refrigerating unit that is used for fully recovering waste heat of optimum, the gaseous phase outlet of generator 1 is connected with condenser 2, first throttle element 3, high-temperature evaporator 4, gas-liquid separator 6 successively, the liquid phase outlet of gas-liquid separator 6 is connected with second restricting element 7, cryogenic vaporizer 8, the outlet of cryogenic vaporizer 8 is divided into two-way, one the tunnel is connected with low-voltage high-temperature absorber 9, and one the tunnel is connected with low-temp low-pressure absorber 5; Described high-temperature evaporator 4 is located at low-temp low-pressure absorber 5 inside; The outlet of low-voltage high-temperature absorber 9 is returned low-temp low-pressure absorber 5 by solution regenerator 10, and low-temp low-pressure absorber 5 is connected with generator 1 with solution regenerator 10, high pressure absorber 12, second solution pump 13, heat exchanger 14 by first solution pump 11; The liquid phase outlet of generator 1 is connected with heat exchanger 14, the 3rd restricting element 15, low-voltage high-temperature absorber 9; The gaseous phase outlet of gas-liquid separator 6 is connected with high pressure absorber 12.
First throttle element 3, second restricting element 7, the 3rd restricting element 15 all adopt choke valve.
Application examples 1
Verify as working medium with ammonia-water conservancy project, performance to the present invention's device shown in Figure 3 and traditional single stage absorption type refrigerating unit has been carried out analog computation, hypothesis condensation temperature and absorber absorption finishing temperature equates in the analog computation, and generator and absorber outlet solution are saturated solution.Condensator outlet is saturated refrigerant liquid, evaporator outlet is saturated refrigerant vapour, high-temperature evaporator and low-temp low-pressure absorber outlet solution heat transfer temperature difference are 5 ℃, the cold junction heat transfer temperature difference of solution heat exchanger is 10 ℃, the cold junction heat transfer temperature difference of solution regenerator is 5 ℃, heated air and solution carry out countercurrent flow, the heat transfer temperature difference of the weak solution of generator exports and heated air inlet temperature is 20 ℃, and the heat transfer temperature difference of the saturation temperature of heated air outlet temperature and generator inlet solution is 20 ℃.Suppose that the heat that heated air comprises evenly distributes in utilizing temperature range, and its thermal capacitance is 1000W/ ℃.
Table 1 be working medium with ammoniacal liquor to the time apparatus of the present invention and traditional single-action device in following the cold that can produce of different heating gas access temperature and heated air discharge temperature
Operating mode ??t source??(℃) ??Q 1??(W) ??Q 2??(W) ??η(％) ??t out1??(℃) ??t out2??(℃)
Operating mode 1 ??100 ??/ ??2021.8 ??/ ??/ ??86.43
Operating mode 2 ??102.5 ??/ ??3141.6 ??/ ??/ ??87.12
Operating mode 3 ??105 ??/ ??4093.1 ??/ ??/ ??88.21
Operating mode 4 ??107.5 ??/ ??5332.3 ??/ ??/ ??88.72
Operating mode 5 ??110 ??/ ??6069.4 ??/ ??/ ??88.8
Operating mode 6 ??112.5 ??/ ??7026.9 ??/ ??/ ??88.43
Operating mode 7 ??115 ??/ ??7880.9 ??/ ??/ ??88.25
Operating mode 8 ??117.5 ??/ ??9085.5 ??/ ??/ ??86.94
Operating mode 9 ??120 ??/ ??9934.9 ??/ ??/ ??87.12
Operating mode 10 ??122.5 ??87.5 ??10762.5 ??12201 ??121.71 ??87.31
Operating mode 11 ??125 ??941.8 ??12045.3 ??1179 ??121.71 ??87.34
Operating mode 12 ??127.5 ??2114.9 ??13344.8 ??531 ??121.71 ??87.37
Operating mode 13 ??130 ??3395.4 ??14493.7 ??327 ??121.71 ??87.72
Operating mode 14 ??132.5 ??4705.6 ??15824.1 ??236 ??121.71 ??87.81
Operating mode 15 ??135 ??5998.1 ??16978.2 ??183 ??121.71 ??87.92
Operating mode ??t source??(℃) ??Q 1??(W) ??Q 2??(W) ??η(％) ??t out1??(℃) ??t out2??(℃)
Operating mode 16 ??137.5 ??7330.4 ??18242.6 ??149 ??121.71 ??88.02
Operating mode 17 ??140 ??8655.9 ??19453.8 ??125 ??121.71 ??88.45
Operating mode 18 ??142.5 ??9854.5 ??20686.6 ??110 ??121.91 ??88.57
Operating mode 19 ??145 ??11145.6 ??21898.5 ??96 ??122.02 ??88.66
Operating mode 20 ??147.5 ??12285.7 ??23301.5 ??90 ??122.33 ??88.75
Operating mode 21 ??150 ??13449.3 ??24370.9 ??81 ??122.65 ??88.85
Operating mode 22 ??152.5 ??14584.5 ??25698.1 ??76 ??122.94 ??88.84
Operating mode 23 ??155 ??15728.9 ??26911.0 ??71 ??123.26 ??88.96
Operating mode 24 ??157.5 ??16889.3 ??28199.6 ??67 ??123.38 ??88.94
Operating mode 25 ??160 ??17957.8 ??29440.8 ??64 ??123.75 ??88.99
Operating mode 26 ??162.5 ??19074.9 ??30598.3 ??60 ??124.06 ??89.01
Operating mode 27 ??165 ??20116.4 ??31830.5 ??58 ??124.38 ??89.06
Table 1 is to be-10 ℃ in evaporating temperature, it is 40 ℃ that condensation temperature, low-voltage high-temperature absorber and high pressure absorber absorb temperature, the result of calculation of the temperature of cold that this device and traditional single-effective absorption refrigerating plant are produced under the temperature of different heating gas access and the heated air that finally emits.t SourceRefer to the heated air inlet temperature, Q 1Refer to the cold that traditional single-effective absorption refrigerating plant is produced, Q 2Refer to the cold that apparatus of the present invention can be produced, η refers to the relative increase rate of the refrigerating capacity of the traditional relatively single-effective absorption refrigerating plant of apparatus of the present invention, t Out1Refer to the heated air discharge temperature of traditional single-effective absorption refrigerating plant, t Out2Refer to the heated air discharge temperature of apparatus of the present invention.
As can be seen from Table 1, under each heated air inlet temperature, the cold that the unit mass heated air of apparatus of the present invention can be produced is all far beyond traditional single-effective absorption refrigerating plant height, in the calculating of each operating mode of being done, the traditional single-effective absorption refrigerating plant of the minimum ratio of the refrigerating capacity of the unit mass heated air of apparatus of the present invention is high by 58%, and along with the reduction of heated air inlet temperature, both gaps are increasing, this mainly is because apparatus of the present invention can reduce the heated air discharge temperature significantly, utilizes the available energy more add hot gas and be full of.Because the heated air discharge temperature of apparatus of the present invention is low far beyond traditional single-effective absorption refrigerating plant, make that the reduction of heated air inlet temperature is more much bigger than apparatus of the present invention to the influence of traditional single-effective absorption refrigerating plant refrigerating capacity, this just makes that under lower heated air inlet temperature, it is better that the performance of apparatus of the present invention seems.From table, it can also be seen that, under assumed conditions, the refrigerating capacity of tradition single-effective absorption refrigerating plant is 0 when heat source temperature is below 120 ℃, and apparatus of the present invention still can be produced more cold, and all low-pressure refrigerant vapor of apparatus of the present invention this moment all will be absorbed in low-pressure low-temperature absorber the inside.As can be seen from the table, apparatus of the present invention can be utilized than traditional single-effective absorption refrigerating plant heated air under the low temperature more.
Application examples 2
Right with water-lithium bromide solution as working medium, drive with hot water, performance to the present invention's device shown in Figure 3 and traditional single stage absorption type refrigerating unit has been carried out analog computation, hypothesis condensation temperature and absorber absorption finishing temperature equates in the analog computation, and generator and absorber outlet solution are saturated solution.Condensator outlet is saturated refrigerant liquid, evaporator outlet is saturated refrigerant vapour, high-temperature evaporator and low-temp low-pressure absorber outlet solution heat transfer temperature difference are 5 ℃, the cold junction heat transfer temperature difference of solution heat exchanger is 10 ℃, the cold junction heat transfer temperature difference of solution regenerator is 5 ℃, heat hot water and solution carry out countercurrent flow, and the heat transfer temperature difference of the concentrated solution of generator exports and hot water inlet's temperature is 5 ℃, and the heat transfer temperature difference of the saturation temperature of the outlet temperature of heat hot water and generator inlet solution is 5 ℃.Suppose that the heat that heat hot water comprises evenly distributes in utilizing temperature range, and its thermal capacitance is 1000W/ ℃.
Table 2 is to be 7 ℃ in evaporating temperature, it is 40 ℃ that condensation temperature, low-voltage high-temperature absorber and high pressure absorber absorb temperature, the result of calculation of the temperature of cold that this device and traditional single-effective absorption refrigerating plant are produced under different heating hot water inlet temperature and the water that finally emits.t SourceRefer to the heat hot water inlet temperature, Q 1Refer to the cold that traditional single-effective absorption refrigerating plant is produced, Q 2Refer to the cold that apparatus of the present invention can be produced, η refers to the relative increase rate of the refrigerating capacity of the traditional relatively single-effective absorption refrigerating plant of apparatus of the present invention, t Out1Refer to the heat hot water discharge temperature of traditional single-effective absorption refrigerating plant, t Out2Refer to the heat hot water discharge temperature of apparatus of the present invention.
Table 2 be working medium with the water-lithium bromide to the time apparatus of the present invention and traditional single-action device in following the cold that can produce of different heating hot water inlet temperature and heat hot water discharge temperature
Operating mode ??t source??(℃) ??Q 1??(W) ??Q 2??(W) ??η(％) ??t out1??(℃) ??t out2??(℃)
Operating mode 1 ??75 ??/ ??5111.5 ??/ ??/ ??60.71
Operating mode 2 ??77.5 ??/ ??6563.5 ??/ ??/ ??61.21
Operating mode 3 ??80 ??/ ??7916.6 ??/ ??/ ??61.71
Operating mode 4 ??82.5 ??/ ??9741.4 ??/ ??/ ??61.60
Operating mode 5 ??85 ??1199.9 ??11552.1 ??863 ??82.96 ??61.60
Operating mode 6 ??87.5 ??3178.2 ??13305.2 ??319 ??82.96 ??61.64
Operating mode 7 ??90 ??5192.1 ??15099.7 ??191 ??82.96 ??61.64
Operating mode 8 ??92.5 ??7194.5 ??16834.0 ??134 ??82.96 ??61.67
Operating mode 9 ??95 ??9197.5 ??18619.6 ??102 ??82.96 ??61.67
Operating mode 10 ??97.5 ??11144.8 ??20336.9 ??82 ??82.96 ??61.71
Operating mode 11 ??100 ??13089.7 ??22016.2 ??68 ??82.96 ??61.84
As can be seen from Table 2, under each heat hot water inlet temperature, the cold that the unit mass heat hot water of apparatus of the present invention can be produced is all far beyond traditional single-effective absorption refrigerating plant height, in the calculating of each operating mode of being done, the refrigerating capacity of the unit mass heat hot water of apparatus of the present invention is more than traditional single-effective absorption refrigerating plant height, and along with the reduction of heat hot water inlet temperature, both gaps are increasing.As seen apparatus of the present invention can reduce the heat hot water discharge temperature significantly, make full use of and more add the contained available energy of hot water.Because the heat hot water discharge temperature of apparatus of the present invention is low far beyond traditional single-effective absorption refrigerating plant, make that the reduction of heat hot water inlet temperature is more much bigger than apparatus of the present invention to the influence of traditional single-effective absorption refrigerating plant refrigerating capacity, this just makes that under lower heat hot water inlet temperature, it is better that the performance of apparatus of the present invention seems.From table, it can also be seen that, under assumed conditions, the refrigerating capacity of tradition single-effective absorption refrigerating plant is 0 when heat source temperature is below 82.5 ℃, and apparatus of the present invention still can be produced more cold, and all low-pressure refrigerant vapor of apparatus of the present invention this moment all will be absorbed in low-pressure low-temperature absorber the inside.As can be seen from the table, apparatus of the present invention can be utilized than traditional single-effective absorption refrigerating plant heat hot water under the low temperature more.
Obviously, apparatus of the present invention can adopt any working medium of absorption refrigeration that can be used as to making working medium.In addition, apparatus of the present invention also can be used for as operation of heat pump.

Claims (3)

1. absorption type refrigerating unit that is used for fully recovering waste heat, it is characterized in that: the gaseous phase outlet of generator (1) is connected with condenser (2), first throttle element (3), high-temperature evaporator (4), second restricting element (7), cryogenic vaporizer (8) successively, the outlet of cryogenic vaporizer (8) is divided into two-way, one the tunnel is connected with low-voltage high-temperature absorber (9), and one the tunnel is connected with low-temp low-pressure absorber (5); Described high-temperature evaporator (4) is located at low-temp low-pressure absorber (5) inside; Low-temp low-pressure absorber (5) is returned in the outlet of low-voltage high-temperature absorber (9), and low-temp low-pressure absorber (5) is connected with generator (1) with heat exchanger (14) by first solution pump (11); The liquid phase outlet of generator (1) is connected with heat exchanger (14), the 3rd restricting element (15), low-voltage high-temperature absorber (9).
2. absorption type refrigerating unit as claimed in claim 1 is characterized in that: be provided with gas-liquid separator (6) between high-temperature evaporator (4) and second restricting element (7); High-temperature evaporator (4) is connected with gas-liquid separator (6); The liquid phase outlet of gas-liquid separator (6) is connected with second restricting element (7); Be provided with high pressure absorber (12), second solution pump (13) between first solution pump (11) and the heat exchanger (14); First solution pump (11) is connected successively with high pressure absorber (12), second solution pump (13), heat exchanger (14); The gaseous phase outlet of gas-liquid separator (6) is connected with high pressure absorber (12).
3. absorption type refrigerating unit as claimed in claim 2 is characterized in that: be provided with solution regenerator (10) between first solution pump (11) and the high pressure absorber (12); The outlet of low-voltage high-temperature absorber (9) is returned low-temp low-pressure absorber (5) by solution regenerator (10).
CN2009101558531A 2009-12-28 2009-12-28 Absorption type refrigerating unit for fully recovering waste heat Expired - Fee Related CN101737998B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915478A (en) * 2010-08-13 2010-12-15 上海交通大学 Ammonia water absorption refrigerating machine driven by marine exhaust
CN102135342A (en) * 2011-05-03 2011-07-27 上海海事大学 Single-stage ammonia absorbing refrigerating machine
CN104019579A (en) * 2014-06-10 2014-09-03 中国科学院理化技术研究所 Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat
CN105066502A (en) * 2015-07-31 2015-11-18 上海缔森能源技术有限公司 Direct burning absorption refrigeration method and device for recovering phase change heat
CN114034142A (en) * 2021-11-18 2022-02-11 中国科学院理化技术研究所 Absorption type ice maker with precooling process

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915478A (en) * 2010-08-13 2010-12-15 上海交通大学 Ammonia water absorption refrigerating machine driven by marine exhaust
CN101915478B (en) * 2010-08-13 2011-11-16 上海交通大学 Ammonia water absorption refrigerating machine driven by marine exhaust
CN102135342A (en) * 2011-05-03 2011-07-27 上海海事大学 Single-stage ammonia absorbing refrigerating machine
CN102135342B (en) * 2011-05-03 2012-11-28 上海海事大学 Single-stage ammonia absorbing refrigerating machine
CN104019579A (en) * 2014-06-10 2014-09-03 中国科学院理化技术研究所 Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat
CN104019579B (en) * 2014-06-10 2016-02-03 中国科学院理化技术研究所 Waste heat is utilized to drive the mixed working fluid low-temperature refrigeration circulating device of injector
CN105066502A (en) * 2015-07-31 2015-11-18 上海缔森能源技术有限公司 Direct burning absorption refrigeration method and device for recovering phase change heat
CN105066502B (en) * 2015-07-31 2017-09-05 上海缔森能源技术有限公司 A kind of direct-fired absorption refrigeration method and device for reclaiming the heat of transformation
CN114034142A (en) * 2021-11-18 2022-02-11 中国科学院理化技术研究所 Absorption type ice maker with precooling process

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