CN102032706B - Absorbing type refrigerator - Google Patents
Absorbing type refrigerator Download PDFInfo
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- CN102032706B CN102032706B CN2010102370147A CN201010237014A CN102032706B CN 102032706 B CN102032706 B CN 102032706B CN 2010102370147 A CN2010102370147 A CN 2010102370147A CN 201010237014 A CN201010237014 A CN 201010237014A CN 102032706 B CN102032706 B CN 102032706B
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- regenerator
- thermal source
- absorption liquid
- warm water
- absorber
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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 provides an absorbing type refrigerator capable of performing heat recovery in low-temperature warm water. The absorbing type refrigerator is provided with: a high-temperature regenerator, a low-temperature regenerator, an evaporator, a first condenser, a first absorber, a heat resource warm water low-pressure regenerator performing condensation of the absorbing liquid via using warm water to heat absorbing liquid to evaporate and separate a refrigerant, absorbing liquid and refrigerant path are respectively formed via tubing connections, the absorbing type refrigerator is also provided with: a heat source warm water high-pressure regenerator performing condensation of the absorbing liquid via using the warm water to heat the absorbing liquid to evaporate and separate a refrigerant; and a second absorber making the absorbing liquid condensed by the heat source warm water high-pressure regenerator absorb refrigerant steam evaporated by the heat source warm water low-pressure regenerator; the second absorber and the heat source warm water low-pressure regenerator are received in a single heat source regenerator absorber cavity, and a recycling path making the absorbing liquid additionally recycle is disposed between the second absorber and the heat source warm water high-pressure regenerator.
Description
Technical field
The present invention relates to possess with the Absorption Refrigerator as the thermal source regenerator of thermal source such as warm water.
Background technology
Generally, known have a following Absorption Refrigerator, wherein, possess thermal source regenerator, high-temp regenerator, low-temperature regenerator, evaporimeter, condenser and absorber, and these devices are carried out that pipe arrangement connects and the circulating path (for example with reference to patent documentation 1) that formed absorption liquid and cold-producing medium respectively.In this Absorption Refrigerator, constitute and to select a heavy effectiveness running and a heavy double effectiveness to turn round, wherein, one heavy effectiveness running is to supply to the warm water of thermal source regenerator carries out thermal regeneration to absorption liquid as thermal source drive manner, one heavy double effectiveness running be the gas burner that possessed with high-temp regenerator as thermal source, the further drive manner to being heated by the absorption liquid after the heating of thermal source regenerator.
Patent documentation 1: the special fair 03-8465 communique of Japan
But, in this Absorption Refrigerator, when under general cold water cooling water temperature condition, carrying out heavy effectiveness running or a heavy double effectiveness running, the saturation temperature of carrying out the absorption liquid of heat exchange with warm water in the thermal source regenerator is about 70 ℃, therefore, need supply with the warm water of high temperature (more than 80 ℃) to this thermal source regenerator.From energy effectively utilize this viewpoint, wish from the warm water of low temperature, to carry out recuperation of heat by the thermal source regenerator, to realize energy-conservationization.But, in existing structure, in order from the warm water of low temperature (for example about 60 ℃), to carry out recuperation of heat, need reduce cooling water temperature etc. significantly operating condition is changed, can't realize abundant energy-conservationization.
Summary of the invention
The present invention In view of the foregoing realizes, can carry out the Absorption Refrigerator that recuperation of heat realizes abundant energy-conservationization thereby its purpose is to provide a kind of from the warm water of low temperature.
In order to solve above-mentioned problem, Absorption Refrigerator of the present invention possesses: thus high-temp regenerator, low-temperature regenerator, evaporimeter, condenser, first absorber separate the first concentrated thermal source regenerator that cold-producing medium carries out absorption liquid with evaporating by heat source fluid heating absorption liquid, these parts are carried out the pipe arrangement connection and formed absorption liquid and refrigerant path respectively, it is characterized in that, also possess: the second thermal source regenerator, it comes cold-producing medium is evaporated separation by described heat source fluid heating absorption liquid, and this absorption liquid is concentrated; With second absorber, the absorption liquid after it makes and concentrates by the described second thermal source regenerator absorbs the refrigerant vapour that is evaporated by the described first thermal source regenerator; This second absorber and the described first thermal source regenerator are accommodated in the single chamber, and between this second absorber and the described second thermal source regenerator, be provided with the circulating path that absorption liquid is circulated separately.
In this structure, can be: the thermal source pipe arrangement that the described first thermal source regenerator and the described second thermal source regenerator and described heat source fluid flow be connected in series, and makes described heat source fluid flow through the successively described first thermal source regenerator and the described second thermal source regenerator.
In addition, can be: cut apart at the absorption liquid pipe that be used for to connect described low-temperature regenerator and described first absorber and be provided with low temperature heat exchanger, make absorption liquid pipe from described first absorber to the described first thermal source regenerator that supply with absorption liquid from via side's low temperature heat exchanger, make from the described first thermal source regenerator to described high-temp regenerator and supply with the absorption liquid pipe of absorption liquid via the opposing party's low temperature heat exchanger.
In addition, can be: in the described second thermal source regenerator, be provided with cold-producing medium and drain heat regenerator, will drain heat regenerator via described cold-producing medium from the cold-producing medium that described low-temperature regenerator flows out and supply to the described condenser.
In addition, can be: described circulating path be provided with the circulating path heat exchanger, and this circulating path heat exchanger is at the absorption liquid that supplies to the described second thermal source regenerator from described second absorber and supply to from the described second thermal source regenerator between the absorption liquid of described second absorber and carry out heat exchange.
In addition, can be: will supply to described low-temperature regenerator and the described first thermal source regenerator from the absorption liquid that described first absorber flows out.
(invention effect)
According to the present invention, thereby owing to possess by heat source fluid heating absorption liquid to come cold-producing medium evaporated to separate to make the second thermal source regenerator that this absorption liquid concentrates and make absorption liquid after concentrating by the second thermal source regenerator absorb second absorber of the refrigerant vapour that is evaporated by the first thermal source regenerator, and this second absorber and the first thermal source regenerator accommodated in the single chamber, therefore, compare with structure in the past, the pressure in the chamber that has disposed the first thermal source regenerator can be reduced, the saturation temperature of the absorption liquid in the first thermal source regenerator can be reduced.And then, owing between second absorber and the second thermal source regenerator, be provided with the circulating path that absorption liquid is circulated separately, therefore compare with structure in the past, can reduce the absorption liquid concentration that flows into the second thermal source regenerator, so, can reduce the saturation temperature of the absorption liquid in the second thermal source regenerator.Therefore, in the first thermal source regenerator and the second thermal source regenerator, can carry out recuperation of heat to absorption liquid from the warm water of low temperature, thereby can realize energy-conservationization.
Description of drawings
Fig. 1 is the summary construction diagram of the absorption cooling and warming water machine of present embodiment.
Fig. 2 is the summary construction diagram of the absorption cooling and warming water machine of another embodiment.
Fig. 3 is the summary construction diagram of the absorption cooling and warming water machine of another embodiment.
Among the figure: the 1-evaporimeter; 2-first absorber; The 5-high-temp regenerator; The 6-low-temperature regenerator; 7-first condenser; 9-thermal source warm water low pressure regeneration device (the first thermal source regenerator); 10-second absorber; 12-thermal source warm water high-pressure regeneration device (the second thermal source regenerator); 13-second condenser; 17-thermal source warm water supply pipe; 17A-first heat pipe; 17B-second heat pipe; 28-absorption liquid pipe; 29-absorption liquid pipe; 41A-first low temperature heat exchanger (side's low temperature heat exchanger); 41B-second low temperature heat exchanger (the opposing party's low temperature heat exchanger); 44-circulating path heat exchanger; The 50-circulating path; The 60-cold-producing medium is drained heat regenerator; 100-absorption cooling and warming water machine (Absorption Refrigerator); 200-absorption cooling and warming water machine (Absorption Refrigerator); 300-absorption cooling and warming water machine (Absorption Refrigerator).
The specific embodiment
Below, with reference to accompanying drawing, one embodiment of the present invention is described.
Fig. 1 is the summary construction diagram of the absorption cooling and warming water machine (Absorption Refrigerator) 100 of present embodiment.Absorption cooling and warming water machine 100 has been to use water as cold-producing medium and has used the absorption cooling and warming water machine of lithium bromide (LiBr) aqueous solution as absorption liquid.
As shown in Figure 1, absorption cooling and warming water machine 100 possesses: evaporimeter 1; First absorber 2 that is arranged side by side with this evaporimeter 1; Taken in the evaporimeter absorber chamber 3 of evaporimeter 1 and first absorber 2; The high-temp regenerator 5 that possesses gas burner 4; Low-temperature regenerator 6; First condenser (condenser) 7 that is arranged side by side with this low-temperature regenerator 6; Taken in the low-temperature regenerator condenser chamber 8 of low-temperature regenerator 6 and first condenser 7; With the warm water (heat source fluid) supplied with from the miscellaneous equipment thermal source warm water low pressure regeneration device (the first thermal source regenerator) 9 as thermal source; Second absorber 10 that is arranged side by side with this thermal source warm water low pressure regeneration device 9; Taken in the thermal source regenerator absorber chamber 11 of thermal source warm water low pressure regeneration device 9 and second absorber 10; With the thermal source warm water high-pressure regeneration device (second thermal source regenerator) 12 of above-mentioned warm water as thermal source; Second condenser 13 that is arranged side by side with this thermal source warm water high-pressure regeneration device 12; Taken in the thermal source regenerator condenser chamber 14 of thermal source warm water high-pressure regeneration device 12 and second condenser 13; Rare absorption liquid pump P1; Intermediate absorption liquid pump P2; Refrigerated medium pump P3; With absorption liquid circulating pump P4; These equipment are connected by pipe arrangement by absorption liquid pipe 21～29 and refrigerant pipe 31～34 etc.
In addition, absorption cooling and warming water machine 100 also possesses: the first low temperature heat exchanger 41A that arranges in the path of the absorption liquid that is formed by absorption liquid pipe 21～29, the second low temperature heat exchanger 41B, high-temperature heat exchanger 42, first cold-producing medium are drained (drain) heat regenerator 43A, second cold-producing medium is drained heat regenerator 43B and circulating path heat exchanger 44.
In addition, symbol 15 expression cold water pipes, be used for will be evaporimeter 1 in having carried out the refrigerating medium after the heat exchange (brine) (reactive fluid) with cold-producing medium and circulate and supply to not shown heat load (for example aircondition), the heat pipe 15A that forms in the part of this cold water pipe 15 is configured in the evaporimeter 1.Symbol 16 expression cooling water pipes, be used for making first absorber 2, first condenser 7, second absorber 10 and second condenser 13 cooling water that circulates successively, each heat pipe 16A, the 16B, 16C and the 16D that form in the part of this cooling water pipe 16 are configured in respectively in first absorber 2, first condenser 7, second absorber 10 and second condenser 13.In this structure, supply with the about 32 ℃ cooling water of inlet temperature to cooling water pipe 16.
In addition, symbol 17 expression thermal source warm water supply pipes are used for making the warm water of the ratio lower temperature (for example about about 60 ℃) that not shown heat source generator (for example solar energy water heater or cogeneration of heat and power (cogeneration) device) generates to flow through thermal source warm water low pressure regeneration device 9 and thermal source warm water high-pressure regeneration device 12 successively.This thermal source warm water supply pipe 17 comprises: the first heat pipe 17A of configuration in thermal source warm water low pressure regeneration device 9; Connect with this first heat pipe 17A and to arrange and to be configured in the second heat pipe 17B in the above-mentioned thermal source warm water high-pressure regeneration device 12; Shunt valve 17C with these heat pipes 17A, 17B bypass; With the triple valve 17D that switches for the flow of adjusting the warm water of supplying with to this heat pipe.
First absorber 2 possesses makes absorption liquid absorb the refrigerant vapour that is evaporated by evaporimeter 1, thereby makes evaporimeter absorber chamber 3 interior pressure remain the function of high vacuum state.Be formed with rare absorption liquid reservoir 2A in the bottom of this first absorber 2, be used for storing the rare absorption liquid that has been diluted owing to absorbed refrigerant vapour, the end with rare absorption liquid pipe 21 of rare absorption liquid pump P1 is connected with this rare absorption liquid reservoir 2A.Rare absorption liquid pipe 21 is arranged in first absorber 2, possess for the heat pipe 21A that carries out heat exchange with the absorption liquid that supplies in this first absorber 2, the pipe arrangement in the downstream of this heat pipe 21A is via the upper opening in thermal source warm water low pressure regeneration device 9 after the first low temperature heat exchanger 41A.In addition, be connected with shunt valve 26 at rare absorption liquid pipe 21, this shunt valve 26 with the first low temperature heat exchanger 41A bypass, and is drained heat regenerator 43A via first cold-producing medium in the downstream of heat pipe 21A.
Thermal source warm water low pressure regeneration device 9 carries out thermal regeneration as thermal source to the absorption liquid of storing in the thermal source warm water low pressure regeneration device 9 with the warm water of supplying with from heat source generator.Dispose the first heat pipe 17A in this thermal source warm water low pressure regeneration device 9, this first heat pipe 17A is formed on the part of thermal source warm water supply pipe 17.Therefore, by making the warm water that circulates in the thermal source warm water supply pipe 17, can carry out thermal regeneration via the absorption liquid of the first heat pipe 17A, that is, thereby make the cold-producing medium evaporation in the absorption liquid that this absorption liquid is concentrated.
Bottom at thermal source warm water low pressure regeneration device 9 is formed with absorption liquid reservoir 9A, be used for storing the absorption liquid of supplying with by rare absorption liquid pipe 21, an end that has connected the first intermediate absorption fluid pipe 22 with intermediate absorption liquid pump P2 at this absorption liquid reservoir 9A, the other end of this first intermediate absorption fluid pipe 22 is that the downstream pipe arrangement of intermediate absorption liquid pump P2 is via after the second low temperature heat exchanger 41B and the high-temperature heat exchanger 42, by the upper opening of exhaust gas heat recovering instrument 45 in this high-temp regenerator 5 of high-temp regenerator 5.In addition, be connected with shunt valve 27 at the first intermediate absorption fluid pipe 22, this shunt valve 27 with the second low temperature heat exchanger 41B bypass, and is drained heat regenerator 43B via second cold-producing medium between intermediate absorption liquid pump P2 and high-temperature heat exchanger 42.
High-temp regenerator 5 carries out thermal regeneration as thermal source to the absorption liquid of storing in the high-temp regenerator 5 with the flame of gas burner 4, is connected with an end of the second intermediate absorption fluid pipe 23 in a side of high-temp regenerator 5.The upper opening of high-temperature heat exchanger 42 in low-temperature regenerator 6 that the other end of this second intermediate absorption fluid pipe 23 arranges via high-temp regenerator 5 sides.High-temperature heat exchanger 42 is used for utilization from the heat of the intermediate absorption fluid of the high temperature of high-temp regenerator 5 outflows, the absorption liquid that supplies to high-temp regenerator 5 by the first intermediate absorption fluid pipe 22 is heated, thus the reduction of the Fuel Consumption of the gas burner 4 in the realization high-temp regenerator 5.
Low-temperature regenerator 6 is being thermal source by high-temp regenerator 5 isolated refrigerant vapours, the absorption liquid of storing among the absorption liquid reservoir 6A to the formation of the below in the low-temperature regenerator 6 carries out thermal regeneration, dispose heat pipe 31A in absorption liquid reservoir 6A, this heat pipe 31A is formed on the part of the refrigerant pipe 31 that extends the bottom from the upper end of high-temp regenerator 5 to first condenser 7.By making the refrigerant vapour that circulates in this refrigerant pipe 31, thereby the heat of the refrigerant vapour that flows out from high-temp regenerator 5 is delivered to the absorption liquid of storing the absorption liquid reservoir 6A via above-mentioned heat pipe 31A, makes this absorption liquid further concentrate.
In addition, on refrigerant pipe 31, be provided with first cold-producing medium in the downstream of heat pipe 31A and drain heat regenerator 43A and second cold-producing medium drainage heat regenerator 43B.First cold-producing medium is drained heat regenerator 43A and is used for utilization from the heat of the refrigerant vapour (with the mixture of refrigerant liquid) of the high temperature of low-temperature regenerator 6 outflows, the absorption liquid that supplies to thermal source warm water low pressure regeneration device 9 by rare absorption liquid pipe 21 and shunt valve 26 is heated, second cold-producing medium is drained the heat that heat regenerator 43B is used for utilizing above-mentioned refrigerant vapour (with the mixture of refrigerant liquid), and the absorption liquid that supplies to high-temp regenerator 5 by the first intermediate absorption fluid pipe 22 and shunt valve 27 is heated.
In this structure, on refrigerant pipe 31, downstream at heat pipe 31A, first cold-producing medium drainage heat regenerator 43A and second cold-producing medium drainage heat regenerator 43B are cut apart configuration, make and drain heat regenerator 43A for rare absorption liquid pipe 21 of heat source warm water low pressure regeneration device 9 supply absorption liquids via first cold-producing medium, therefore can suppress to drain the absorption liquid excessive temperature rising that heat regenerator 43A supplies to thermal source warm water low pressure regeneration device 9 via first cold-producing medium.Therefore, can absorption liquid be put in the thermal source warm water low pressure regeneration device 9 with the temperature lower than the saturation temperature of the absorption liquid in the thermal source warm water low pressure regeneration device 9, so, the temperature reduction that self-cleaning (flush) causes can not take place, can prevent that COP from reducing.
And then, in this structure, owing to make and be used for discharging the first intermediate absorption fluid pipe 22 of absorption liquid via second cold-producing medium drainage heat regenerator 43B from thermal source warm water low pressure regeneration device 9, therefore can drain heat regenerator 43B by second cold-producing medium and fully absorption liquid be heated, thus the reduction of the Fuel Consumption of the gas burner 4 in the realization high-temp regenerator 5.
One end of concentrated absorption solution pipe 24 is connected with the lower end of the absorption liquid reservoir 6A of low-temperature regenerator 6, and the other end of this concentrated absorption solution pipe 24 is at the upper opening of first absorber 2.In concentrated absorption solution pipe 24, be provided with the first low temperature heat exchanger 41A and the second low temperature heat exchanger 41B that are divided into two.The first low temperature heat exchanger 41A is used for utilization from the heat of the concentrated absorption solution of the high temperature of the absorption liquid reservoir 6A outflow of low-temperature regenerator 6, the absorption liquid that supplies to thermal source warm water low pressure regeneration device 9 by rare absorption liquid pipe 21 is heated, the second low temperature heat exchanger 41B is used for utilizing the heat of above-mentioned concentrated absorption solution, and the absorption liquid that supplies to high-temp regenerator 5 by the first intermediate absorption fluid pipe 22 is heated.
In this structure, 24 couples of first low temperature heat exchanger 41A of concentrated absorption solution pipe and the second low temperature heat exchanger 41B are cut apart configuration, make the rare absorption liquid pipe 21 that is used for heat source warm water low pressure regeneration device 9 supply absorption liquids via the first low temperature heat exchanger 41A, therefore can suppress to supply to via the first low temperature heat exchanger 41A absorption liquid excessive temperature rising of thermal source warm water low pressure regeneration device 9.Therefore, can absorption liquid be put in the thermal source warm water low pressure regeneration device 9 with the low temperature of saturation temperature than the absorption liquid in the thermal source warm water low pressure regeneration device 9, so, the temperature reduction that self-cleaning causes can not take place, can prevent that COP from reducing.
And then, in this structure, owing to make and be used for discharging the first intermediate absorption fluid pipe 22 of absorption liquid via the second low temperature heat exchanger 41B from thermal source warm water low pressure regeneration device 9, therefore can heat absorption liquid fully by the second low temperature heat exchanger 41B, thus the reduction of the Fuel Consumption of the gas burner 4 in the realization high-temp regenerator 5.
In addition, the first low temperature heat exchanger 41A of concentrated absorption solution pipe 24 and the upstream side of the second low temperature heat exchanger 41B are connected by shunt valve 25 with the upstream side of the intermediate absorption liquid pump P2 of the first intermediate absorption fluid pipe 22, under the situation that the running of this intermediate absorption liquid pump P2 stops, the absorption liquid that flows out from the absorption liquid reservoir 9A of thermal source warm water low pressure regeneration device 9 supplies in first absorber 2 by the first intermediate absorption fluid pipe 22, shunt valve 25, the second low temperature heat exchanger 41B, the first low temperature heat exchanger 41A and concentrated absorption solution pipe 24.
Second absorber 10 possesses makes absorption liquid absorb the refrigerant vapour that is evaporated by thermal source warm water low pressure regeneration device 9, thereby makes thermal source regenerator absorber chamber 11 interior pressure remain the function of high vacuum state.Pressure in this thermal source regenerator absorber chamber 11 is set to than the pressure height in the evaporimeter absorber chamber 3, in the present embodiment, be set to the saturation temperature pressure (about 3.2KPa) lower than set point of temperature (60 ℃) that makes the rare absorption liquid in the thermal source warm water low pressure regeneration device 9.Be formed with rare absorption liquid reservoir 10A in the bottom of this second absorber 10, be used for storing the rare absorption liquid that has been diluted owing to absorbed refrigerant vapour, the end with absorption liquid pipe 28 of absorption liquid circulating pump P4 is connected with this rare absorption liquid reservoir 10A.The other end of absorption liquid pipe 28 is via circulating path heat exchanger 44 upper openings of back in thermal source warm water high-pressure regeneration device 12.
Thermal source warm water high-pressure regeneration device 12 is used for the warm water supplied with from heat source generator as thermal source, further the absorption liquid of supplying with from second absorber 10 by absorption liquid pipe 28 is carried out thermal regeneration, dispose the second heat pipe 17B in thermal source warm water high-pressure regeneration device 12, this second heat pipe 17B is configured in the downstream of the first heat pipe 17A of thermal source warm water supply pipe 17.Bottom at thermal source warm water high-pressure regeneration device 12 is formed with absorption liquid reservoir 12A, is used for storing the absorption liquid of supplying with by absorption liquid pipe 28, and an end of absorption liquid pipe 29 is connected with this absorption liquid reservoir 12A.Be provided with circulating path heat exchanger 44 in the absorption liquid pipe 29, this circulating path heat exchanger 44 is used for the heat by the absorption liquid that flows out from thermal source warm water high-pressure regeneration device 12, absorption liquid from 10 ejections of second absorber and the absorption liquid pipe 28 of flowing through is heated the upper opening of the absorption liquid pipe 29 in the downstream of this circulating path heat exchanger 44 in second absorber 10.
Thus, in this structure, form absorption liquid and between second absorber 10 and thermal source warm water high-pressure regeneration device 12, circulate, formed another circulating path 50 of absorption liquid by second absorber 10, thermal source warm water high-pressure regeneration device 12 and absorption liquid pipe 28,29.In this structure, the flow through absorption liquid of the low concentration of the absorption liquid of the first above-mentioned absorber 2 or high-temp regenerator 5 (for example 42～44%) of the absorption liquid concentration ratios of having filled circulation in this circulating path 50.
Below, action is described.
When the cooling running of air-cooling system etc., heat in the absorption cooling and warming water machine 100 is put in control, makes the cold water pipe 15 outlet side temperature that supply to the refrigerating medium (for example cold water) of not shown heat load via cold water pipe 15 circulations become for example 7 ℃ of the design temperatures of regulation.
Particularly, control device (not shown) is when for example the temperature of warm water big and that supply with via thermal source warm water supply pipe 17 heat source warm water low pressure regeneration devices 9 and thermal source warm water high-pressure regeneration device 12 has reached set point of temperature (for example 57～60 ℃) in heat load, carry out warm water, gas is also used running, namely, warm water from thermal source warm water supply pipe 17 heat source warm water low pressure regeneration devices 9 and thermal source warm water high-pressure regeneration device 12 supply rated capacities, and start all pump P1～P4, and in gas burner 4, make gas combustion, and the firepower of control gas burner 4 is so that the outlet side temperature of cold water pipe 15 becomes 7 ℃ of regulation.
In this case, from first absorber 2 via rare absorption liquid pipe 21 and by the rare absorption liquid of rare absorption liquid pump P1 conveyance to the thermal source warm water low pressure regeneration device 9, be heated across the tube wall of the first heat pipe 17A by the warm water of supplying with from thermal source warm water supply pipe 17 among the absorption liquid reservoir 9A in this thermal source warm water low pressure regeneration device 9, thereby the cold-producing medium in rare absorption liquid is evaporated separation.
Here, in this structure, thermal source warm water low pressure regeneration device 9 is accommodated in the thermal source regenerator absorber chamber 11 with second absorber 10, the cavity pressure in the past that therefore can make these thermal source regenerator absorber chamber 11 interior pressure ratios accommodate the thermal source regenerator is low, can reduce the saturation temperature of the absorption liquid in the thermal source warm water low pressure regeneration device 9.Therefore, can from the warm water of low temperature (for example 60 ℃), carry out recuperation of heat with the form that the latent heat of absorption liquid changes by thermal source warm water low pressure regeneration device 9, thereby can realize energy-conservationization.
Cold-producing medium evaporated separate intermediate absorption fluid that back absorption liquid concentration uprises by the intermediate absorption liquid pump P2 of the first intermediate absorption fluid pipe 22, be heated via the second low temperature heat exchanger 41B, second cold-producing medium drainage heat regenerator 43B and high-temperature heat exchanger 42, and be sent in the high-temp regenerator 5.By the absorption liquid of conveyance in the high-temp regenerator 5, by the heating of the burning gases of the flame of gas burner 4 and high temperature, so the cold-producing medium in this intermediate absorption fluid is evaporated separation in this high-temp regenerator 5.In high-temp regenerator 5, the cold-producing medium evaporation is separated the intermediate absorption fluid that the back temperature rises, be sent to low-temperature regenerator 6 via high-temperature heat exchanger 42.
And, intermediate absorption fluid is supplied with and is flowed into the refrigerant vapour heating of the high temperature of heat pipe 31A via refrigerant pipe 31 from high-temp regenerator 5 in low-temperature regenerator 6, thereby cold-producing medium further separates, concentration further improves, this concentrated absorption solution is sent to first absorber 2 after via the second low temperature heat exchanger 41B, the first low temperature heat exchanger 41A, is sprinkled into from the top of this first absorber 2.
On the other hand, the absorption liquid from second absorber 10 flows out through absorption liquid pipe 28 by absorption liquid circulating pump P4 is heated the back via circulating path heat exchanger 44 and flows in the thermal source warm water high-pressure regeneration device 12.Then, among the absorption liquid reservoir 12A in this thermal source warm water high-pressure regeneration device 12, be heated across the tube wall of the second heat pipe 17B by the warm water of supplying with from thermal source warm water supply pipe 17, thereby the cold-producing medium in the absorption liquid is evaporated separation.Absorption liquid be heated regeneration in thermal source warm water high-pressure regeneration device 12 after is sent to second absorber 10 by absorption liquid pipe 28, is sprinkled into from the top of this second absorber 10.
In this structure, owing to be provided with the circulating path 50 that absorption liquid is circulated between second absorber 10 and thermal source warm water high-pressure regeneration device 12, therefore the situation of structure was low in the past can to make the absorption liquid concentration ratio that flows into thermal source warm water high-pressure regeneration device 12, so, can reduce the saturation temperature of the absorption liquid in the thermal source warm water high-pressure regeneration device 12.Therefore, can from the warm water of low temperature (for example 60 ℃), carry out recuperation of heat with the form that the latent heat of absorption liquid changes by thermal source warm water high-pressure regeneration device 12, thereby can realize energy-conservationization.
In addition, separate the cold-producing medium that generates by thermal source warm water high-pressure regeneration device 12 and enter the 13 back condensations of second condenser, separate the cold-producing medium that generates by low-temperature regenerator 6 and enter the 7 back condensations of first condenser.Then, the refrigerant liquid of storing in the condensate liquid reservoir 7A of first condenser 7 enters evaporimeter 1 via refrigerant pipe 32, the refrigerant liquid of storing in the condensate liquid reservoir 13A of second condenser 13 enters evaporimeter 1 via refrigerant pipe 33, is kicked up by the running of refrigerated medium pump P3 and spreads on the heat pipe 15A of cold water pipe 15 from the top of evaporimeter 1.
Spreading refrigerant liquid on the heat pipe 15A obtains heat of vaporization and evaporates from the refrigerating medium of the inside by heat pipe 15A, therefore, the refrigerating medium of the inside by heat pipe 15A is cooled, like this, the refrigerating medium after temperature reduces supplies to the cooling running that air-cooling system etc. is carried out in heat load from cold water pipe 15.
And, the cold-producing medium that is evaporated by evaporimeter 1 carries out following circulation repeatedly, namely, enter first absorber 2, absorbed by the concentrated absorption solution of supplying with and being sprinkled into from the top by low-temperature regenerator 6, be stored among rare absorption liquid reservoir 2A of first absorber 2, by rare absorption liquid pump P1 by conveyance in thermal source warm water low pressure regeneration device 9.
At warm water, gas and in running, for the outlet temperature that makes cold water pipe 15 reaches 7 ℃ of regulation, by the add heat of control device control based on gas burner 4, particularly control supplies to the gas flow of gas burner 4.And, even if if make based on gas burner 4 add the heat minimum, the outlet temperature of still measuring cold water pipe 15 is 7 ℃ of low temperature than regulation, then control device stops burning of gas, stop the heating based on gas burner 4, transfer to the warm water individual operation.
In the warm water individual operation, for the outlet temperature that makes cold water pipe 15 reaches 7 ℃ of regulation, add heat in the control thermal source warm water low pressure regeneration device 9, particularly, control is taken into the amount of the warm water the first heat pipe 17A from thermal source warm water supply pipe 17, that is, and and the aperture of control triple valve 17D.
And, even if make the warm water of the thermal source warm water supply pipe 17 of flowing through all flow into the first heat pipe 17A at operation triple valve 17D, outlet temperature that also can not survey cold water pipe 15 is during than 7 ℃ low temperature of regulation, in gas burner 4, make gas combustion as described above, restart the generation of thermal regeneration and the refrigerant vapour of the absorption liquid in the high-temp regenerator 5, turn back to warm water, gas and use running.
In addition, in the warm water individual operation, heat load big but via the temperature that thermal source warm water supply pipe 17 supplies to the warm water of thermal source warm water low pressure regeneration device 9 be reduced to regulation below 60 ℃ the time (when for example the warm water temperature of supplying with from the solar energy water heater because of the bad grade of weather condition is unstable), carry out the gas individual operation, namely, switch three-way valve 17D makes and does not supply with warm water from thermal source warm water supply pipe 17 heat source warm water low pressure regeneration devices 9, absorption liquid circulating pump P4 is stopped, and start pump P1～P3, and in gas burner 4, make gas combustion.Under this situation, for the outlet temperature that makes cold water pipe 15 reaches 7 ℃ of regulation, also control the firepower of gas burner 4.
In this gas individual operation, rare absorption liquid among rare absorption liquid reservoir 2A of first absorber 2 by rare absorption liquid pump P1 by conveyance to thermal source warm water low pressure regeneration device 9 and be stored among the absorption liquid reservoir 9A, but do not supply with warm water as thermal source to heat pipe 16A.Therefore, by the rare absorption liquid of conveyance in the thermal source warm water low pressure regeneration device 9 under not heated situation, running by intermediate absorption liquid pump P2 via high-temperature heat exchanger 42 by conveyance in high-temp regenerator 5, when circulating, be heated equally during then with warm water, gas and with running, thereby in high-temp regenerator 5 and low-temperature regenerator 6, carry out the generation that separates of the concentrated regeneration of absorption liquid and cold-producing medium.In this gas individual operation, when the temperature of the warm water that supplies to thermal source warm water low pressure regeneration device 9 has reached 60 ℃ that stipulate, according to the size of cooling load, carry out warm water, gas and use running or warm water individual operation.
As mentioned above, according to present embodiment, because absorption cooling and warming water machine 100 possesses: high-temp regenerator 5, its heating absorption liquid comes cold-producing medium is evaporated separation, the absorption liquid after obtaining to concentrate; Low-temperature regenerator 6, it passes through by the isolated refrigerant vapour of this high-temp regenerator 5 evaporations, the absorption liquid after the absorption liquid after being concentrated by this high-temp regenerator 5 is heated to obtain further to concentrate; Thermal source warm water low pressure regeneration device 9, it comes cold-producing medium is evaporated separation by warm water heating absorption liquid, and the absorption liquid after concentrating is supplied to high-temp regenerator 5; First condenser 7, it is to cooling off to obtain condensating refrigerant liquid by the isolated refrigerant vapour of low-temperature regenerator 6 evaporations; Evaporimeter 1, it makes and obtains heat the reactive fluid of cold-producing medium in the heat pipe 15A that flows through and evaporate; With first absorber 2, after absorbing the refrigerant vapour that is evaporated by this evaporimeter 1, the absorption liquid after it makes and concentrates by low-temperature regenerator 6 supplies in the thermal source warm water low pressure regeneration device 9; Also possess: thermal source warm water high-pressure regeneration device 12, it comes cold-producing medium is evaporated separation by warm water heating absorption liquid, and this absorption liquid is concentrated; With second absorber 10, the absorption liquid after it makes and concentrates by thermal source warm water high-pressure regeneration device 12 absorbs the refrigerant vapour that is evaporated by thermal source warm water low pressure regeneration device 9; And, this second absorber 10 and thermal source warm water low pressure regeneration device 9 are accommodated in the single thermal source regenerator absorber chamber 11, therefore, the cavity pressure in the past that can make these thermal source regenerator absorber chamber 11 interior pressure ratios accommodate the thermal source regenerator is low, can reduce the saturation temperature of the absorption liquid in the thermal source warm water low pressure regeneration device 9.
And then, according to present embodiment, owing to be provided with the circulating path 50 that absorption liquid is circulated between second absorber 10 and thermal source warm water high-pressure regeneration device 12, therefore the situation of structure was low in the past can to make the absorption liquid concentration ratio that flows into thermal source warm water high-pressure regeneration device 12, so, can reduce the saturation temperature of the absorption liquid in the thermal source warm water high-pressure regeneration device 12.Therefore, can from the warm water of low temperature (for example 60 ℃), carry out recuperation of heat with the form that the latent heat of absorption liquid changes by thermal source warm water low pressure regeneration device 9 and thermal source warm water high-pressure regeneration device 12, thereby can realize energy-conservationization.
In addition, according to present embodiment, be connected in series owing to constituting thermal source warm water low pressure regeneration device 9 and the thermal source warm water high-pressure regeneration device 12 thermal source warm water supply pipe 17 with respect to the warm water of flowing through, make this warm water flow through thermal source warm water low pressure regeneration device 9 and thermal source warm water high-pressure regeneration device 12 successively, therefore, can improve the interior absorption liquid of each regenerator and the heat exchanger effectiveness of warm water.
In addition, according to present embodiment, be used for connecting the concentrated absorption solution pipe 24 of low-temperature regenerator 6 and first absorber 2, be provided with the first low temperature heat exchanger 41A and the second low temperature heat exchanger 41B that are divided into two, the rare absorption liquid pipe 21 that make to be used for supplying with absorption liquids from first absorber, 2 heat source warm water low pressure regeneration devices 9 is via the first low temperature heat exchanger 41A, and the absorption liquid excessive temperature that therefore can suppress to supply to via the first low temperature heat exchanger 41A thermal source warm water low pressure regeneration device 9 rises.Therefore, can absorption liquid be put in the thermal source warm water low pressure regeneration device 9 with the temperature lower than the saturation temperature of the absorption liquid in the thermal source warm water low pressure regeneration device 9, so, the temperature reduction that self-cleaning causes can not take place, can prevent that COP from reducing.
And then, according to present embodiment, owing to make the first intermediate absorption fluid pipe 22 that is used for the 5 discharge absorption liquids from thermal source warm water low pressure regeneration device 9 to high-temp regenerator via the second low temperature heat exchanger 41B, therefore can heat absorption liquid fully by the second low temperature heat exchanger 41B, thus the reduction of the Fuel Consumption of the gas burner 4 in the realization high-temp regenerator 5.
In addition, according to present embodiment, be provided with circulating path heat exchanger 44 at circulating path 50, be used for carrying out heat exchange at the absorption liquid of supplying with from second absorber, 10 heat source warm water high-pressure regeneration devices 12 and from thermal source warm water high-pressure regeneration device 12 between the absorption liquid to 10 supplies of second absorber, therefore, can effectively utilize the heat that from warm water, is offered absorption liquid by thermal source warm water high-pressure regeneration device 12.
Below, another embodiment is described.
Fig. 2 is the summary construction diagram of the absorption cooling and warming water machine 200 of another embodiment.For the parts mark same-sign identical with above-mentioned embodiment structure and omission explanation.
In this another embodiment, the bottom of the thermal source warm water high-pressure regeneration device 12 of absorption cooling and warming water machine 200 in thermal source regenerator condenser chamber 14 possesses cold-producing medium and drains heat regenerator 60.This cold-producing medium is drained heat regenerator 60 and is arranged on the above-mentioned refrigerant pipe 31, drain heat regenerator 60 from the refrigerant vapour that high-temp regenerator 5 flows out through flowing into cold-producing medium after the low-temperature regenerator 6, the absorption liquid that supplies to thermal source warm water high-pressure regeneration device 12 by this 60 pairs of heat regenerator of cold-producing medium drainage heats.Then, absorption liquid flows in first condenser 7 after being heated in this thermal source warm water high-pressure regeneration device 12.
According to this another embodiment, when warm water, gas are also used running, not only utilize the warm water that supplies to thermal source warm water high-pressure regeneration device 12 from heat source generator, also utilize by high-temp regenerator 5 and produce and drain the latent heat of cold-producing medium (cold-producing medium drainage) of the high temperature of heat regenerator 60 via supplying to cold-producing medium behind the low-temperature regenerator 6, thus, can heat concentrated to the absorption liquid that circulates in the circulating path 50 efficiently.Drained the cold-producing medium of heat regenerator 60 generations by thermal source warm water high-pressure regeneration device 12 and cold-producing medium by in refrigerant pipe 33 inflow evaporators 1, in this evaporimeter 1, be used for the cooling of refrigerating medium.Therefore, can realize representing the raising of thermal source warm water COP of the ratio of the refrigerating capacity that obtains by the heat that reclaims from warm water.
This thermal source warm water COP can calculate by following (1), (2) formula, thermal source warm water COP is 0.35～0.4 in above-mentioned embodiment (with reference to Fig. 1), with respect to this, in this another embodiment (with reference to Fig. 2), thermal source warm water COP can be brought up to about 0.5.
Thermal source warm water COP=gas reduction rate * refrigerating capacity/thermal source warm water reclaims heat (1)
Gas reduction rate=1-warm water gas and the gas consumption (2) during with the gas consumption in when running/gas individual operation
Fig. 3 is the summary construction diagram of the absorption cooling and warming water machine 300 of another embodiment.For the parts mark same-sign identical with above-mentioned embodiment structure and omission explanation.This absorption cooling and warming water machine 300 forms so-called and flows circulating (parallel flow cycle), the rare absorption liquid pipe 21 that extends from first absorber 2 branches into two, and mobile absorption liquid supplies in low-temperature regenerator 6 and the thermal source warm water low pressure regeneration device 9 in the branched pipe 210.In addition, the absorption liquid that flows in another branched pipe 211 supplies in the high-temp regenerator 5.
By the concentrated absorption solution pipe 212 of flowing through of the absorption liquid behind low-temperature regenerator 6 and thermal source warm water low pressure regeneration device 9 thermal regenerations, by another concentrated absorption solution pipe 213 of flowing through of the absorption liquid behind high-temp regenerator 5 thermal regenerations, the two collaborates in concentrated absorption solution pipe 214, flows in first absorber 2 via low temperature heat exchanger 61 backs.
In this another embodiment, because the rare absorption liquid that flows out from first absorber 2 supplies to low-temperature regenerator 6 and the thermal source warm water low pressure regeneration device 9, therefore this low-temperature regenerator 6 and thermal source warm water low pressure regeneration device 9, second absorber 10 can be accommodated in the same regenerator absorber chamber 62 together.Therefore, can reduce the quantity in chamber, reduce the miniaturization of manufacturing cost and implement device.In addition, as long as the rare absorption liquid that flows out from first absorber 2 can be supplied to low-temperature regenerator 6 and the thermal source warm water low pressure regeneration device 9, be not limited to and flow circulating, for example, the absorption liquid that also can be applicable to flow out from low-temperature regenerator supplies to the circulated in countercurrent formula of high-temp regenerator.
Claims (7)
1. Absorption Refrigerator, possess: thus high-temp regenerator, low-temperature regenerator, evaporimeter, condenser, first absorber separate the first concentrated thermal source regenerator that cold-producing medium carries out absorption liquid with evaporating by heat source fluid heating absorption liquid, these parts are carried out the pipe arrangement connection and formed absorption liquid and refrigerant path respectively, it is characterized in that also possessing:
The second thermal source regenerator, it comes cold-producing medium is evaporated separation by described heat source fluid heating absorption liquid, and this absorption liquid is concentrated; With
Second absorber, the absorption liquid after it makes and concentrates by the described second thermal source regenerator absorbs the refrigerant vapour that is evaporated by the described first thermal source regenerator;
This second absorber and the described first thermal source regenerator are housed in the single chamber, and are provided with the circulating path that absorption liquid is circulated separately between this second absorber and the described second thermal source regenerator,
Described circulating path flows through the absorption liquid in described second absorber to absorb liquid pump, circulating path heat exchanger, be fed to the described second thermal source regenerator, absorption liquid in the absorption liquid reservoir of the described second thermal source regenerator flows into described circulating path heat exchanger through pipeline, carries out entering the described first thermal source regenerator after the heat exchange with the absorption liquid that flows out from described second absorber.
2. Absorption Refrigerator according to claim 1 is characterized in that,
The thermal source pipe arrangement that the described first thermal source regenerator and the described second thermal source regenerator and described heat source fluid flow is connected in series, and makes described heat source fluid flow through the successively described first thermal source regenerator and the described second thermal source regenerator.
3. Absorption Refrigerator according to claim 1 and 2 is characterized in that,
Cut apart at the absorption liquid pipe that be used for to connect described low-temperature regenerator and described first absorber and to be provided with low temperature heat exchanger, make absorption liquid pipe from described first absorber to the described first thermal source regenerator that supply with absorption liquid from via side's low temperature heat exchanger, make from the described first thermal source regenerator to described high-temp regenerator and supply with the absorption liquid pipe of absorption liquid via the opposing party's low temperature heat exchanger.
4. Absorption Refrigerator according to claim 1 is characterized in that,
In the described second thermal source regenerator, be provided with cold-producing medium and drain heat regenerator, will drain heat regenerator via described cold-producing medium from the cold-producing medium that described low-temperature regenerator flows out and supply to the described condenser.
5. according to each described Absorption Refrigerator in the claim 12,4, it is characterized in that,
Described circulating path is provided with the circulating path heat exchanger, and this circulating path heat exchanger is at the absorption liquid that supplies to the described second thermal source regenerator from described second absorber and supply to from the described second thermal source regenerator between the absorption liquid of described second absorber and carry out heat exchange.
6. Absorption Refrigerator according to claim 3 is characterized in that,
Described circulating path is provided with the circulating path heat exchanger, and this circulating path heat exchanger is at the absorption liquid that supplies to the described second thermal source regenerator from described second absorber and supply to from the described second thermal source regenerator between the absorption liquid of described second absorber and carry out heat exchange.
7. Absorption Refrigerator according to claim 1 is characterized in that,
To supply to described low-temperature regenerator and the described first thermal source regenerator from the absorption liquid that described first absorber flows out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009226012A JP2011075180A (en) | 2009-09-30 | 2009-09-30 | Absorption type refrigerating machine |
| JP2009-226012 | 2009-09-30 |
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| Publication Number | Publication Date |
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| CN102032706A CN102032706A (en) | 2011-04-27 |
| CN102032706B true CN102032706B (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102370147A Expired - Fee Related CN102032706B (en) | 2009-09-30 | 2010-07-21 | Absorbing type refrigerator |
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| CN (1) | CN102032706B (en) |
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|---|---|---|---|---|
| KR101377690B1 (en) | 2012-11-14 | 2014-03-26 | (주) 월드에너지 | High efficiency low temperature hot water driven two-lift type absorbtion refrigerator using heat exchanger of absorbed heat |
| JP6614873B2 (en) * | 2015-09-07 | 2019-12-04 | 日立ジョンソンコントロールズ空調株式会社 | Absorption refrigerator |
| JP6280170B2 (en) * | 2015-10-13 | 2018-02-14 | 荏原冷熱システム株式会社 | Concentrator |
| JP2018128228A (en) * | 2017-02-10 | 2018-08-16 | 東京ガスエンジニアリングソリューションズ株式会社 | Heat source machine controller, heat source machine device and heat source machine system |
| WO2018150516A1 (en) * | 2017-02-16 | 2018-08-23 | 日立ジョンソンコントロールズ空調株式会社 | Absorption refrigerator |
| BR112019024204A2 (en) | 2017-06-02 | 2020-06-02 | Basf Se | PROCESS FOR CONDITIONING A FLUID, AIR CONDITIONING EQUIPMENT, USE OF THE AIR CONDITIONING EQUIPMENT, HEAT EXCHANGER AND EXTERNAL WALL ELEMENT |
| CN109269150B (en) * | 2017-07-17 | 2021-09-28 | 荏原冷热系统株式会社 | Absorption heat pump |
| JP2019113260A (en) * | 2017-12-25 | 2019-07-11 | 荏原冷熱システム株式会社 | Absorption type heat exchange system |
| KR102292399B1 (en) * | 2020-01-15 | 2021-08-20 | 엘지전자 주식회사 | A Freezing Machine |
| KR102292398B1 (en) | 2020-01-15 | 2021-08-20 | 엘지전자 주식회사 | A Freezing Machine |
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| JP4148830B2 (en) * | 2003-05-09 | 2008-09-10 | 三洋電機株式会社 | Single double effect absorption refrigerator |
| JP4521855B2 (en) * | 2003-05-14 | 2010-08-11 | 荏原冷熱システム株式会社 | Absorption refrigerator |
| JP4287705B2 (en) * | 2003-06-18 | 2009-07-01 | 東京瓦斯株式会社 | Single double effect absorption refrigerator and operation control method thereof |
| US7464562B2 (en) * | 2004-10-13 | 2008-12-16 | Ebara Corporation | Absorption heat pump |
| JP4606255B2 (en) * | 2005-06-09 | 2011-01-05 | 三洋電機株式会社 | Operation method of single double effect absorption refrigerator |
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| CN102032706A (en) | 2011-04-27 |
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