CN104697022A - Three-level evaporation absorption heat pump type heat supply unit - Google Patents
Three-level evaporation absorption heat pump type heat supply unit Download PDFInfo
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- CN104697022A CN104697022A CN201310644993.1A CN201310644993A CN104697022A CN 104697022 A CN104697022 A CN 104697022A CN 201310644993 A CN201310644993 A CN 201310644993A CN 104697022 A CN104697022 A CN 104697022A
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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
Disclosed is a three-level evaporation absorption heat pump type heat supply unit. A unit body is divided into four sealing spaces from top to bottom; the lower portion of each space is separated by a separation grid plate, and a steam flow channel is reserved in the upper portion of each space; the first space is provided with a generator and a condenser; the second space is provided with a first-level absorber and an evaporator; the third space is provided with a second-level absorber and an evaporator; the fourth space is provided with a third-level absorber and an evaporator; a solution circulating channel is formed between the generator and each absorber, and a refrigerant flowing channel is formed between the condenser and each evaporator; the input end of a heat exchange pipe of the generator is connected with the output end of a primary water pipe network, and the output end of the heat exchange pipe of the generator is sequentially connected with a heat exchange pipe of the third-level evaporator, a heat exchange pipe of the second-level evaporator, a heat exchange pipe of the first-level evaporator, and the input end of the primary water pipe network to form a unit primary water pipe path; the output end of a secondary water pipe network is connected to the input end of the heat exchange pipe of the first-level absorber, and the output end of the heat exchange pipe of the first-level absorber is sequentially connected with the heat exchange pipe of the second-level absorber, the heat exchange pipe of the third-level absorber, the heat exchange pipe of the condenser and the input end of the secondary water pipe network to form a unit secondary water pipe path; and a lithium bromide dilute solution is injected into the third-level absorber.
Description
Technical field
The present invention relates to a kind of is Building group central heating system, particularly a kind of can make a secondary net hot water enter water and backwater temperature difference significantly increases, three grades of evaporation absorption type heat pump-type thermal power plant unit of high efficient heat exchanging.
Background technology
In the northern area of China, adopt with steam power plant's centralizedly supply loop high-temperature water, become main flow by the pattern of distributed heat exchange station to Building group heat supply.Along with urban development, the expansion of central heating scale, steam power plant concentrates the loop high-temperature water of output (reaching as high as 130 DEG C) to be called a water, often just will can reach distributed heat exchange station through longer fed distance.When heating demand is identical, increases the temperature difference entered between water and backwater of a water, the flow of a secondary net hot water can be reduced, thus the initial cost of heat-net-pipeline can be reduced, reduce electrical power consumption of water pump, reduce heat energy loss, reduce heat cost.At present, a secondary net hot water enters the entering of heat exchange station, return water temperature is generally about 130/60 DEG C, and wherein return water temperature is subject to the restriction of user's heat requirement, utilizes conventional plate type heat exchanger to reduce again; Utilize current conventional absorption heat transfer technology return water temperature can be reduced to about 35 DEG C, but be subject to the constraint of this body structure, cannot again temperature be reduced further, and return water temperature is reduced to the optimum energy-saving effect that 25 DEG C just can reach central heating.
Summary of the invention
The object of the invention be to provide a kind of can make a secondary net hot water enter water and backwater temperature difference significantly increases, realize three grades of high efficient heat exchanging evaporation absorption type heat pump-type thermal power plant unit.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of three grades of evaporation absorption type heat pump-type thermal power plant unit, comprise a unit body, a grid and intermediate water pipe network, wherein:
This unit body is divided into four completely isolated confined spaces from top to bottom, and wherein the bottom separation screen in each space separates, and steam flow passage is left on the top being separated screen;
The separation screen both sides in the first space arrange generator and condenser respectively, the separation screen both sides of second space arrange first absorber and one-level evaporimeter respectively, the separation screen both sides in the 3rd space arrange secondary absorber and secondary evaporimeter respectively, and the separation screen both sides in the 3rd space arrange three grades of absorbers and three grades of evaporimeters respectively;
Be respectively equipped with tray and heat exchanger tube in evaporimeter at different levels and absorber, in condenser and generator, be only provided with heat exchanger tube, the top of generator is provided with solution input, bottom is provided with solution output, the bottom of absorber at different levels is also provided with solution output, the bottom of condenser is provided with cryogen output, the bottom of evaporimeter at different levels is also provided with cryogen output, the solution output of generator is connected with the tray of first absorber through solution heat exchanger, the solution output of first absorber connects the tray of secondary absorber, the solution output of secondary absorber connects the tray of three grades of absorbers, the solution output of three grades of absorbers is through solution pump, solution heat exchanger is communicated with the solution input of generator,
The cryogen output of condenser is connected with the tray of one-level evaporimeter, and the cryogen output of one-level evaporimeter is connected with the tray of secondary evaporimeter, and the cryogen output of secondary evaporimeter is connected with the tray of three grades of evaporimeters;
The heat exchanger tube input of generator connects the output of a grid to input a water, output is linked in sequence the heat exchanger tube of three grades of evaporimeters, secondary evaporimeter, one-level evaporimeter, finally connects the input of a grid and forms closed unit water lines;
The output of intermediate water pipe network connects the heat exchanger tube input of first absorber to input intermediate water, the heat exchanger tube output of first absorber is linked in sequence the heat exchanger tube of secondary absorber, three grades of absorbers, condenser, the input of last connecting secondary grid, forms the unit intermediate water pipeline closed;
Bromize lithium dilute solution is marked with in three grades of absorbers.
Being improved to further of such scheme, generator output end is linked in sequence through water water-to-water heat exchanger the heat exchanger tube of three grades of evaporimeters, secondary evaporimeter, one-level evaporimeter, the output of intermediate water pipe network is connected to the input of water water-to-water heat exchanger and the heat exchanger tube input of first absorber, and the output of water water-to-water heat exchanger is connected to the input of intermediate water pipe network.
The present invention is by employing three grades evaporation and three grades of absorptions, grid hot water step in three evaporimeters is allowed progressively to lower the temperature, the heat of a grid high-temperature-hot-water can be made full use of, the import and export temperature difference of a grid hot water is widened, and allows intermediate water pipe network hot water step in three absorbers progressively heat up; In addition, the present invention only need adopt a solution pump, i.e. single pump configuration, just can realize the circulation of lithium-bromide solution, thus effectively can reduce the fault rate of unit.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, the present invention three grades evaporation absorption type heat pump-type thermal power plant unit comprises a unit body 1, grid and intermediate water pipe network.
This unit body 1 is divided into four completely isolated confined spaces from top to bottom, and wherein the bottom separation screen 2 in each space separates, and steam flow passage 3 is left on the top being separated screen 2.Separation screen 2 both sides in the first space arrange generator G and condenser E respectively, the separation screen both sides of second space arrange first absorber A1 and one-level evaporimeter E1 respectively, the separation screen both sides in the 3rd space arrange secondary absorber A2 and secondary evaporimeter E2 respectively, and the separation screen both sides in the 3rd space arrange three grades of absorber A3 and three grade evaporimeter E3 respectively.
Be respectively equipped with tray 4 and heat exchanger tube 5 in evaporimeter at different levels and absorber, in condenser E and generator G, be only provided with heat exchanger tube.The top of generator G is provided with solution input 6, and bottom is provided with solution output 7, and the bottom of absorber at different levels is also provided with cryogen solution output 7; The bottom of condenser E is provided with cryogen output 10, and the bottom of evaporimeter at different levels is also provided with cryogen output 10.The solution output of generator G is connected with the tray of first absorber A1 through solution heat exchanger P, the solution output of first absorber A1 connects the tray of secondary absorber A2, the solution output of secondary absorber A2 connects the tray of three grades of absorber A3, and the solution output of three grades of absorber A3 is communicated with the solution input 6 of generator G through solution pump 9, solution heat exchanger P.The cryogen output of condenser E is connected with the tray of one-level evaporimeter E1, and the cryogen output of one-level evaporimeter E1 is connected with the tray of secondary evaporimeter E2, and the cryogen output of secondary evaporimeter E2 is connected with the tray of three grades of evaporimeter E3.
The heat exchanger tube input of this generator G connects the output 11 of a grid to input a water, output is linked in sequence through water water-to-water heat exchanger 8 heat exchanger tube 5 of three grades of evaporimeter E3, secondary evaporimeter E2, one-level evaporimeter E1, finally connects the input 12 of a grid and forms the unit water lines closed.The output 13 of intermediate water pipe network is connected to the input of water water-to-water heat exchanger 8 and the heat exchanger tube input of first absorber A1, the heat exchanger tube output of first absorber A1 is linked in sequence the heat exchanger tube of secondary absorber A2, three grades of absorber A3, condenser E, the input 14 of last connecting secondary grid; The output of this water water-to-water heat exchanger 8 is also connected to the input 14 of intermediate water pipe network, thus forms the unit intermediate water pipeline closed.Bromize lithium dilute solution is filled with in these three grades of absorber A3.
When the present invention uses, bromize lithium dilute solution is heated to boiling by high temperature water that the heat exchanger tube through generator G inputs in generator G, after producing steam, bromize lithium dilute solution is concentrated becomes concentrated solution, and after being lowered the temperature by solution heat exchanger P, enter the tray of first absorber A1, under being drenched by tray, concentrated solution absorbs from the refrigerant vapour produced in one-level evaporimeter E1, and release and absorb heat, concentrated solution is diluted; Being entered secondary absorber A2 again by the concentrated solution after diluting, absorbing the refrigerant vapour from producing in secondary evaporimeter E2, release and absorb heat, solution dilutes again; This solution continues to enter three grades of absorber A3, absorbs the refrigerant vapour from producing in three grades of evaporimeter E3, and release and absorb heat, solution is diluted into as weak solution.Weak solution, under the driving of solution pump 9, enters in generator G after solution heat exchanger P heats up, again concentrated by a high temperature water heating, completes solution circulation.The water vapour that in generator G, bromize lithium dilute solution boiling produces enters in condenser E and condenses into cryogen liquid, and discharge the heat of condensation, cryogen liquid enters one-level evaporimeter E1 successively by pipeline self, secondary evaporimeter E2, absorb heat in three grades of evaporimeter E3 and evaporate, the water vapour produced enters first absorber A1 respectively, secondary absorber A2, in three grades of absorber A3, absorbed by lithium-bromide solution, complete the circulation of cryogen liquid.The hot water of a high temperature grid enters generator G, as driving heat source heating bromize lithium dilute solution, bromizate lithium weak solution and evaporate water vapour, and be condensed into bromize lithium concentrated solution, generator G is flowed out after the hot water cooling of a grid, after the water entering water water-to-water heat exchanger and intermediate water pipe network carries out heat exchange, continue again to flow into three grades of evaporimeter E3 successively, secondary evaporimeter E2, the heat exchanger tube of one-level evaporimeter E1, water progressively after heat release cooling, becomes low-temperature primary water and flows out unit successively in above three evaporimeters.The water part flowed out from intermediate water pipe network flows into first absorber A1, secondary absorber A2, three grades of absorber A3 successively, and in condenser E, flow out unit after being progressively heated in the process intensification, the high-temperature-hot-water as intermediate water pipe network enters intermediate water pipe network.From intermediate water pipe network flow out water another part after the heat exchange of water water coke slurry device 8, directly return intermediate water pipe network.
Claims (2)
1. three grades of evaporation absorption type heat pump-type thermal power plant unit, comprise a unit body (1), a grid and intermediate water pipe network, is characterized in that:
This unit body is divided into four completely isolated confined spaces from top to bottom, and wherein bottom separation screen (2) in each space separates, and steam flow passage (3) is left on the top being separated screen;
The separation screen both sides in the first space arrange generator (G) and condenser (E) respectively, the separation screen both sides of second space arrange first absorber (A1) and one-level evaporimeter (E1) respectively, the separation screen both sides in the 3rd space arrange secondary absorber (A2) and secondary evaporimeter (E2) respectively, and the separation screen both sides in the 3rd space arrange three grades of absorbers (A3) and three grades of evaporimeters (E3) respectively;
Be respectively equipped with tray (4) and heat exchanger tube (5) in evaporimeter at different levels and absorber, in condenser and generator, be only provided with heat exchanger tube, the top of generator is provided with solution input, bottom is provided with solution output, the bottom of absorber at different levels is also provided with solution output, the bottom of condenser is provided with cryogen output, the bottom of evaporimeter at different levels is also provided with cryogen output, the solution output of generator is connected with the tray of first absorber through solution heat exchanger (P), the solution output of first absorber connects the tray of secondary absorber, the solution output of secondary absorber connects the tray of three grades of absorbers, the solution output of three grades of absorbers is through solution pump (8), solution heat exchanger is communicated with the solution input of generator,
The cryogen output of condenser is connected with the tray of one-level evaporimeter, and the cryogen output of one-level evaporimeter is connected with the tray of secondary evaporimeter, and the cryogen output of secondary evaporimeter is connected with the tray of three grades of evaporimeters;
The heat exchanger tube input of generator connects the output of a grid to input a water, output is linked in sequence the heat exchanger tube of three grades of evaporimeters, secondary evaporimeter, one-level evaporimeter, finally connects the input of a grid and forms closed unit water lines;
The output of intermediate water pipe network connects the heat exchanger tube input of first absorber to input intermediate water, the heat exchanger tube output of first absorber is linked in sequence the heat exchanger tube of secondary absorber, three grades of absorbers, condenser, the input of last connecting secondary grid, forms the unit intermediate water pipeline closed;
Bromize lithium dilute solution is marked with in three grades of absorbers.
2. three grades of evaporation absorption type heat pump-type thermal power plant unit according to claim 1, it is characterized in that, generator output end is linked in sequence through water water-to-water heat exchanger (9) heat exchanger tube of three grades of evaporimeters, secondary evaporimeter, one-level evaporimeter, the output of intermediate water pipe network is connected to the input of water water-to-water heat exchanger and the heat exchanger tube input of first absorber, and the output of water water-to-water heat exchanger is connected to the input of intermediate water pipe network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310644993.1A CN104697022A (en) | 2013-12-05 | 2013-12-05 | Three-level evaporation absorption heat pump type heat supply unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310644993.1A CN104697022A (en) | 2013-12-05 | 2013-12-05 | Three-level evaporation absorption heat pump type heat supply unit |
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| Publication Number | Publication Date |
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| CN104697022A true CN104697022A (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310644993.1A Pending CN104697022A (en) | 2013-12-05 | 2013-12-05 | Three-level evaporation absorption heat pump type heat supply unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871480A (en) * | 2017-02-17 | 2017-06-20 | 松下制冷（大连）有限公司 | A kind of direct-connected lithium bromide absorption type heat pump unit in height area |
| CN108954911A (en) * | 2017-05-23 | 2018-12-07 | 北京华源泰盟节能设备有限公司 | A kind of multistage absorption heat pump and heat-exchange unit |
| CN109163474A (en) * | 2018-10-16 | 2019-01-08 | 山东金佰瑞节能科技有限公司 | One pump multistage absorption-multistage evaporation absorption heat pump processed and the method for increasing the temperature difference |
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| CN2297686Y (en) * | 1997-06-16 | 1998-11-18 | 吴键 | Single pump lithium bromide absorption type refrigeration machine |
| KR20040089821A (en) * | 2003-04-15 | 2004-10-22 | 최호순 | Double effect model direct connection absorbtion type refrigerator |
| JP4101373B2 (en) * | 1998-01-14 | 2008-06-18 | ガス、リサーチ、インステイチユート | Heat absorption system |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| CN202145018U (en) * | 2011-07-13 | 2012-02-15 | 清华大学 | Heat supply system for improving heat supply capacity of centralized heat supply tube network by heat pump technology |
| CN203642306U (en) * | 2013-12-05 | 2014-06-11 | 湖南运达节能科技有限公司 | Three-level evaporation absorption heat pump type heating unit |
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2013
- 2013-12-05 CN CN201310644993.1A patent/CN104697022A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2297686Y (en) * | 1997-06-16 | 1998-11-18 | 吴键 | Single pump lithium bromide absorption type refrigeration machine |
| JP4101373B2 (en) * | 1998-01-14 | 2008-06-18 | ガス、リサーチ、インステイチユート | Heat absorption system |
| KR20040089821A (en) * | 2003-04-15 | 2004-10-22 | 최호순 | Double effect model direct connection absorbtion type refrigerator |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| CN202145018U (en) * | 2011-07-13 | 2012-02-15 | 清华大学 | Heat supply system for improving heat supply capacity of centralized heat supply tube network by heat pump technology |
| CN203642306U (en) * | 2013-12-05 | 2014-06-11 | 湖南运达节能科技有限公司 | Three-level evaporation absorption heat pump type heating unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871480A (en) * | 2017-02-17 | 2017-06-20 | 松下制冷（大连）有限公司 | A kind of direct-connected lithium bromide absorption type heat pump unit in height area |
| CN106871480B (en) * | 2017-02-17 | 2019-03-26 | 松下制冷（大连）有限公司 | A kind of lithium bromide absorption type heat pump unit that height area is direct-connected |
| CN108954911A (en) * | 2017-05-23 | 2018-12-07 | 北京华源泰盟节能设备有限公司 | A kind of multistage absorption heat pump and heat-exchange unit |
| CN109163474A (en) * | 2018-10-16 | 2019-01-08 | 山东金佰瑞节能科技有限公司 | One pump multistage absorption-multistage evaporation absorption heat pump processed and the method for increasing the temperature difference |
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Application publication date: 20150610 |