CN109269143B - Novel absorption heat pump and application method thereof - Google Patents
Novel absorption heat pump and application method thereof Download PDFInfo
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- CN109269143B CN109269143B CN201811259124.6A CN201811259124A CN109269143B CN 109269143 B CN109269143 B CN 109269143B CN 201811259124 A CN201811259124 A CN 201811259124A CN 109269143 B CN109269143 B CN 109269143B
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 112
- 239000000498 cooling water Substances 0.000 claims description 24
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 13
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
-
- 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
Abstract
The invention discloses a novel absorption heat pump and an application method thereof, wherein the novel absorption heat pump comprises an evaporator, an absorber, an indoor heat exchanger, a generator, a condenser, a cooling tower, a heat source heat exchanger, a corresponding valve, a solution pump and the like, and has two states of a serial state structure and a parallel state structure; in winter, a second type of absorption heat pump is adopted, the temperature of a high-temperature heat source is high enough in summer, and the high-temperature heat source is directly used as a first type of absorption heat pump for operation; the low-temperature heat source is used for driving in winter, the low-temperature heat source is provided for the evaporator and the generator to serve as a medium-temperature heat source, required heat is extracted from the absorber, the heat energy grade is improved, and the low-temperature heat source is used as a second-class absorption heat pump.
Description
Technical Field
The invention relates to the technical field of heat exchange devices, in particular to an absorption heat pump and an application method thereof.
Background
The absorption heat pump is a circulation system for pumping heat from a low-temperature heat source to a high-temperature heat source by utilizing a low-grade heat source, and is an effective device for recycling low-temperature heat energy. Absorption heat pumps can be divided into two categories: namely, the first type of absorption heat pump and the second type of absorption heat pump have different application purposes and different working modes.
The first type of absorption heat pump, also called a heat-increasing heat pump, uses a small amount of high-temperature heat source (such as steam, high-temperature hot water, combustible gas combustion heat and the like) as a driving heat source to generate a large amount of medium-temperature heat energy. Namely, the heat energy of the low-temperature heat source is improved to the medium temperature by utilizing high-temperature heat energy drive, so that the utilization efficiency of the heat energy is improved.
The second type of absorption heat pump, also called a temperature-rising heat pump, uses a large amount of medium-temperature heat source to generate a small amount of high-temperature useful heat energy. The medium-low heat energy is utilized to drive, and a great amount of heat potential difference of the medium-temperature heat source and the low-temperature heat source is utilized to prepare heat quantity which is less than but higher than that of the medium-temperature heat source, so that part of medium-low heat energy is transferred to a higher temperature, and the utilization grade of the heat source is improved.
At present, the existing solar absorption refrigerator is driven by solar high-temperature hot water in summer with sufficient solar energy as a heat source, and takes a lithium bromide unit as a first type of absorption heat pump to finish refrigeration, and consists of a cooling tower, a condenser, a generator, an evaporator, an absorber, a solution heat exchanger, an air conditioner heat exchanger and other parts. However, in winter where solar energy is relatively rare, the temperature of solar hot water is relatively low, and the temperature for directly supplying heat is not high enough, but the temperature for supplying water to the source heat pump is too high. The solar hot water in winter is not utilized, and the lithium bromide unit is idle in winter, so that the equipment cannot be fully used. The single function makes the utilization rate of the lithium bromide unit and the low utilization rate thereof, causes the rise of investment cost and operation cost, and has obvious disadvantages in comparison with a compression heat pump.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a novel absorption heat pump which can combine a first type of absorption heat pump and a second type of absorption heat pump in summer and a second type of absorption heat pump in winter so as to improve the energy utilization efficiency and an application method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a novel absorption heat pump, including evaporimeter, absorber, indoor heat exchanger, generator, condenser, cooling tower and heat source heat exchanger, its characterized in that: the absorption heat pump comprises a series state structure and a parallel state structure, wherein the series state absorption heat pump system comprises:
the cooling water inlet pipeline of the condenser is connected with the outlet of the evaporator and the outlet of the cooling tower;
the water inlet pipeline of the indoor heat exchanger is respectively connected with the evaporator and the absorber;
the outlet pipeline of the indoor heat exchanger is respectively connected with the pipeline of the cooling water entering the absorber and the inlet of the evaporator;
the outlet of the heat source heat exchanger is connected with the water pipeline inlets of the generator and the evaporator; the inlet of the heat source heat exchanger is connected with the water pipeline outlets of the generator and the evaporator;
the concentrated solution outlet of the generator is connected with the absorber, and the solution inlet of the generator is connected with the solution outlet of the absorber;
the absorption heat pump system in the parallel state is as follows:
the refrigerant outlet pipeline of the condenser is connected with the evaporator, and the cooling water inlet pipeline of the condenser is connected with the outlet of the cooling tower; the condenser cooling water outlet pipeline and the water pipeline outlet of the absorber (through a second valve) are connected in parallel and connected to the inlet of the cooling tower;
the water inlet pipeline of the indoor heat exchanger is respectively connected with the evaporator and the absorber; the outlet pipeline of the indoor heat exchanger is respectively connected with the pipeline of the cooling water entering the absorber and the inlet of the evaporator;
the outlet of the heat source heat exchanger is connected with the water pipeline inlets of the generator and the evaporator, and the inlet of the heat source heat exchanger is connected with the water pipeline outlets of the generator and the evaporator;
the concentrated solution outlet of the generator is connected with the absorber; the solution inlet of the generator is connected with the solution outlet of the absorber.
Further, in the serial state, a first valve is arranged in a connecting pipeline between a condenser refrigerant outlet pipeline and the evaporator, and two ends of the first valve are connected with a solution pump in parallel; a second valve is arranged in a connecting pipeline between the cooling water inlet pipeline of the condenser and the outlet of the evaporator, and a fifth valve is arranged in a connecting pipeline between the cooling water inlet pipeline of the condenser and the outlet of the cooling tower.
Further, in the serial and parallel states, a fourth valve is arranged between the water inlet pipeline of the indoor heat exchanger and the evaporator, and a third valve is arranged between the water inlet pipeline of the indoor heat exchanger and the absorber; the outlet pipeline of the indoor heat exchanger is connected with the pipeline of the cooling water entering the absorber through a sixth valve and connected with the inlet of the evaporator through a seventh valve.
Further, in the series and parallel states, a ninth valve is arranged on a connecting pipeline between the outlet of the heat source heat exchanger and the evaporator, and an eleventh valve is arranged on a connecting pipeline between the inlet of the heat source heat exchanger and the evaporator.
Further, a tenth valve and a solution pump are arranged between the concentrated solution outlet of the generator and the absorber in the serial and parallel states; a solution pump is arranged between the solution inlet of the generator and the solution outlet of the absorber; an eleventh valve is arranged on the solution connecting pipeline of the generator and the evaporator.
The application method based on the novel absorption heat pump is characterized by comprising the following steps of: the absorber is connected with the water pipeline of the condenser in series or in parallel, and a fifth valve is omitted when the absorber is connected with the water pipeline of the condenser in parallel; the heat is supplied in winter through a low-temperature heat source, the high-temperature heat source is used for refrigerating in summer, a first type of absorption heat pump is adopted in summer, a second type of absorption heat pump is adopted in winter, and the heat supply is realized through switching of a valve and a solution pump;
summer season: opening a first valve, a second valve, a fourth valve, a seventh valve, an eighth valve and a tenth valve, closing a third valve, a fifth valve, a sixth valve, a ninth valve and an eleventh valve, providing heat to the generator by using an external high-temperature heat source to evaporate water in the solution, enabling water to enter a condenser to be cooled, throttling and depressurizing the water through the first valve, flowing into an evaporator, spraying the water on a chilled water supply pipe, collecting the water into a solution bag through a water containing disc, pumping the water into the evaporator again through a circulating pump, absorbing the evaporated water by a lithium bromide concentrated solution in the generator, pumping the evaporated water into the generator into a dilute solution through the solution pump, heating the dilute solution into the concentrated solution through the generator, pumping the concentrated solution into an absorber through a pressure difference and the circulating solution pump, realizing self-spraying, and completing circulation;
winter: and (3) a third valve, a fifth valve, a sixth valve, a ninth valve and an eleventh valve are arranged, the first valve, the second valve, the fourth valve, the seventh valve, the eighth valve and the tenth valve are closed, heat is provided for the generator by using an external medium-temperature heat source to enable moisture in the solution to be vaporized, water enters a condenser to be cooled, then the water enters an evaporator to be sprayed on a medium-temperature heat source hot water pipe through a booster pump, then the water enters a solution bag through a water containing disc to be collected, the water enters the evaporator through a circulating pump, the water enters the evaporator again after being vaporized, the water is absorbed by lithium bromide concentrated solution in the generator, the water is converted into dilute solution after being heated by the generator, the dilute solution is converted into concentrated solution after being converted into the concentrated solution by pressure difference, the concentrated solution is pumped into an absorber through the booster pump, self-spraying and standing spraying is completed, the indoor heat is supplied by the absorber, and the circulation is completed.
Compared with the prior art, the invention has the following advantages:
the invention combines the first type absorption heat pump and the second type absorption heat pump, and adopts the first type absorption heat pump mode in summer; in winter, a second type of absorption heat pump is adopted, the temperature of a high-temperature heat source is high enough in summer, and the high-temperature heat source is directly used as a first type of absorption heat pump for operation; the low-temperature heat source is used for driving in winter, the low-temperature heat source is provided for the evaporator and the generator to serve as a medium-temperature heat source, required heat is extracted from the absorber, the heat energy grade is improved, and the low-temperature heat source is used as a second-class absorption heat pump.
The medium-temperature heat is supplied to the generator and the evaporator, the absorber raises the temperature by about 20 ℃, and then the medium-temperature heat is supplied to the heat exchanger of the user air conditioner for heat supply, so that the utilization rate of the system is greatly improved. Compared with the first type of absorption heat pump, the parallel connection type of the invention is equivalent to adding two booster pumps and corresponding valve pipelines, the conversion of the two types of absorption heat pumps in the system is realized by switching the first valve, the tenth valve and the corresponding booster pumps in the refrigerant system, and the water system also changes correspondingly when the function is switched.
In the unit, the evaporator walks low-temperature hot water in winter, is used for taking away the cold energy in the evaporator, and the low-temperature hot water is also introduced into the generator, and finally the heat energy grade is improved in the generator, so that compared with the traditional lithium bromide unit, the lithium bromide unit can supply heat in winter through a low-temperature heat source and refrigerate in summer through a high-temperature heat source.
Drawings
FIG. 1 is a schematic diagram of an absorption heat pump in a series configuration of the present invention;
fig. 2 is a schematic diagram of an absorption heat pump structure in a parallel state according to the present invention.
In the figure, A is an evaporator, B is an absorber, C is an indoor heat exchanger, D is a generator, E is a condenser, F is a cooling tower, G is a solution bag, H is a heat source heat exchanger, 1 is a first valve, 2 is a second valve, 3 is a third valve, 4 is a fourth valve, 5 is a fifth valve, 6 is a sixth valve, 7 is a seventh valve, 8 is an eighth valve, 9 is a ninth valve, 10 is a tenth valve, and 11 is an eleventh valve.
Detailed Description
In this embodiment, referring to fig. 1 and 2, the novel absorption heat pump includes an evaporator a, an absorber B, an indoor heat exchanger C, a generator D, a condenser E, a cooling tower F, and a heat source heat exchanger H, where the absorption heat pump includes two states of a series state structure and a parallel state structure, and the absorption heat pump system in the series state is:
the refrigerant outlet pipeline of the condenser E is connected with the evaporator A, and the cooling water inlet pipeline of the condenser E is connected with the outlet of the evaporator A and the outlet of the cooling tower F;
the water inlet pipeline of the indoor heat exchanger C is respectively connected with the evaporator A and the absorber B;
the outlet pipeline of the indoor heat exchanger C is respectively connected with the pipeline of the cooling water entering the absorber B and the inlet of the evaporator A;
the outlet of the heat source heat exchanger H is connected with the inlets of the water pipelines of the generator D and the evaporator A; the inlet of the heat source heat exchanger H is connected with the water pipeline outlet of the generator D) and the evaporation A;
the concentrated solution outlet of the generator D is connected with the absorber B, and the solution inlet of the generator D is connected with the solution outlet of the absorber B;
the absorption heat pump system in the parallel state is as follows:
the refrigerant outlet pipeline of the condenser E is connected with the evaporator A, and the cooling water inlet pipeline of the condenser E is connected with the outlet of the cooling tower F; the outlet pipeline of the cooling water of the condenser E and the outlet of the water pipeline of the absorber B (through a second valve) are connected in parallel to the inlet of the cooling tower F;
the water inlet pipeline of the indoor heat exchanger C is respectively connected with the evaporator A and the absorber B; the outlet pipeline of the indoor heat exchanger C is respectively connected with the pipeline of the cooling water entering the absorber B and the inlet of the evaporator A;
the outlet of the heat source heat exchanger H is connected with the inlets of the water pipelines of the generator D and the evaporator A, and the inlet of the heat source heat exchanger H is connected with the outlets of the water pipelines of the generator D and the evaporator A;
the concentrated solution outlet of the generator D is connected with the absorber B; the solution inlet of the generator D is connected with the solution outlet of the absorber B.
In the serial state, a first valve 1 is arranged in a connecting pipeline between a refrigerant outlet pipeline of the condenser E and the evaporator A, and two ends of the first valve 1 are connected with a solution pump in parallel; a second valve 2 is arranged in a connecting pipeline between the cooling water inlet pipeline of the condenser E and the outlet of the evaporator A, and a fifth valve 5 is arranged in a connecting pipeline between the cooling water inlet pipeline of the condenser E and the outlet of the cooling tower F.
In the serial and parallel states, a fourth valve 4 is arranged between the water inlet pipeline of the indoor heat exchanger C and the evaporator A, and a third valve 3 is arranged between the water inlet pipeline of the indoor heat exchanger C and the absorber B; the outlet pipeline of the indoor heat exchanger C is respectively connected with the pipeline of the cooling water entering the absorber B through a sixth valve 6 and connected with the inlet of the evaporator A through a seventh valve 7.
In the serial and parallel states, a ninth valve 9 is arranged on a connecting pipeline between the outlet of the heat source heat exchanger H and the evaporator A, and an eleventh valve 11 is arranged on a connecting pipeline between the inlet of the heat source heat exchanger H and the evaporator A.
A tenth valve 10 and a solution pump are arranged between the concentrated solution outlet of the generator D and the absorber B in the serial and parallel states; a solution pump is arranged between the solution inlet of the generator D and the solution outlet of the absorber B; an eleventh valve 11 is arranged on the solution connecting pipeline between the generator D and the evaporator A.
Summer season: the first valve 1, the second valve 2, the fourth valve 4, the seventh valve 7, the eighth valve 8 and the tenth valve 10 are opened, and the third valve 3, the fifth valve 5, the sixth valve 6, the ninth valve 9 and the eleventh valve 11 are closed.
The method comprises the steps of providing heat to a generator D by using an external high-temperature heat source to evaporate water in the solution, enabling water to enter a condenser E to be cooled, throttling the water through a first valve 1, directly flowing into an evaporator A to be depressurized and then sprayed on a chilled water supply pipe, collecting the water entering a solution bag G (close to the evaporator A) through a water containing disc, pumping the water entering the evaporator A through a circulating pump, absorbing the vaporized water by a lithium bromide concentrated solution in the generator D, pumping the vaporized water into the generator D through a solution pump after the vaporized water becomes a dilute solution, heating the dilute solution by the generator D, converting the vaporized water into the concentrated solution, pumping the concentrated solution into an absorber B through a pressure difference and a circulating solution pump, and completing self-spraying and standing spraying and circulation.
Winter: the third valve 3, the fifth valve 5, the sixth valve 6, the ninth valve 9 and the eleventh valve 11 are opened, and the first valve 1, the second valve 2, the fourth valve 4, the seventh valve 7, the eighth valve 8 and the tenth valve 10 are closed.
The method comprises the steps of providing heat to a generator D by an external medium-temperature heat source to enable moisture in the solution to be vaporized, enabling water to enter a condenser E to be cooled, enabling the water to enter an evaporator A to be sprayed on a medium-temperature heat source hot water pipe through a booster pump, enabling the water to enter a solution bag G through a water containing disc to be collected, enabling the water to enter the evaporator A through a circulating pump, enabling the water to enter the evaporator A again, enabling the water to be absorbed by a lithium bromide concentrated solution in the generator D after vaporization, enabling the water to flow into the generator D through pressure difference after the water is changed into a dilute solution, enabling the dilute solution to be heated by the generator D and then be changed into a concentrated solution, enabling the concentrated solution to enter an absorber B through the booster pump, completing self-spraying and standing spraying, enabling the absorber B to supply heat to a room, and completing circulation.
The above describes the system in which the condenser E and the absorber B are operated in series, and another mode of operation in which the condenser E and the absorber B are operated in parallel, which reduces the throttle valve, i.e. the fifth valve 5, with a certain improvement compared to the series mode of operation.
Summer season: the first valve 1, the second valve 2, the fourth valve 4, the seventh valve 7, the eighth valve 8 and the tenth valve 10 are opened, and the third valve 3, the sixth valve 6, the ninth valve 9 and the eleventh valve 11 are closed. The method comprises the steps of providing heat to a generator D by using an external high-temperature heat source to enable moisture in the solution to be vaporized, enabling water to enter a condenser E to be cooled, enabling the water to flow into an evaporator A directly to be depressurized and then to be sprayed on a chilled water supply pipe, collecting the chilled water by a water containing disc and then entering a solution bag B, pumping the chilled water into the evaporator A by a circulating pump, absorbing the vaporized concentrated solution by lithium bromide in the generator D, pumping the vaporized concentrated solution into the generator D by a solution pump after the concentrated solution is changed into a dilute solution, heating the dilute solution by the generator D, pumping the dilute solution into an absorber B by a pressure difference and a circulating solution pump, and completing self-spraying and circulation.
Winter: the third valve 3, the sixth valve 6, the ninth valve 9 and the eleventh valve 11 are opened, and the valves 1, 2, 4, 7, 8, 10 are closed. The method comprises the steps of providing heat to a generator D by an external medium-temperature heat source to enable moisture in the solution to be vaporized, enabling water to enter a condenser E to be cooled, enabling the water to enter an evaporator A to be sprayed on a medium-temperature heat source hot water pipe through a booster pump, enabling the water to enter a solution bag G through a water containing disc to be collected, enabling the water to enter the evaporator A through a circulating pump, enabling the water to enter the evaporator A again, enabling the water to be absorbed by a lithium bromide concentrated solution in the generator D after vaporization, enabling the water to flow into the generator D through pressure difference after the water is changed into a dilute solution, enabling the dilute solution to be heated by the generator D and then be changed into a concentrated solution, enabling the concentrated solution to enter an absorber B through the booster pump, completing self-spraying and standing spraying, enabling the absorber B to supply heat to a room, and completing circulation.
The foregoing detailed description of the invention has been presented for purposes of illustration and description, but is not intended to limit the scope of the invention, i.e., the invention is not limited to the details shown and described.
Claims (5)
1. The utility model provides a novel absorption heat pump, including evaporimeter (A), absorber (B), indoor heat exchanger (C), generator (D), condenser (E), cooling tower (F) and heat source heat exchanger (H), its characterized in that: the absorption heat pump comprises a series state structure and a parallel state structure, wherein the series state absorption heat pump system comprises:
the refrigerant outlet pipeline of the condenser (E) is connected with the evaporator (A), and the cooling water inlet pipeline of the condenser (E) is connected with the outlet of the evaporator (A) and the outlet of the cooling tower (F);
the water inlet pipeline of the indoor heat exchanger (C) is respectively connected with the evaporator (A) and the absorber (B);
the outlet pipeline of the indoor heat exchanger (C) is respectively connected with the pipeline of the cooling water entering the absorber (B) and the inlet of the evaporator (A);
the outlet of the heat source heat exchanger (H) is connected with the inlets of the water pipelines of the generator (D) and the evaporator (A); the inlet of the heat source heat exchanger (H) is connected with the outlets of the water pipelines of the generator (D) and the evaporator (A);
the concentrated solution outlet of the generator (D) is connected with the absorber (B), and the solution inlet of the generator (D) is connected with the solution outlet of the absorber (B);
the absorption heat pump system in the parallel state is as follows:
the refrigerant outlet pipeline of the condenser (E) is connected with the evaporator (A), and the cooling water inlet pipeline of the condenser (E) is connected with the outlet of the cooling tower (F); the outlet pipeline of the cooling water of the condenser (E) and the outlet of the water pipeline of the absorber (B) are connected in parallel to the inlet of the cooling tower (F);
the water inlet pipeline of the indoor heat exchanger (C) is respectively connected with the evaporator (A) and the absorber (B); the outlet pipeline of the indoor heat exchanger (C) is respectively connected with the pipeline of the cooling water entering the absorber (B) and the inlet of the evaporator (A);
the outlet of the heat source heat exchanger (H) is connected with the inlets of the water pipelines of the generator (D) and the evaporator (A), and the inlet of the heat source heat exchanger (H) is connected with the outlets of the water pipelines of the generator (D) and the evaporator (A);
the concentrated solution outlet of the generator (D) is connected with the absorber (B); the solution inlet of the generator (D) is connected with the solution outlet of the absorber (B);
in a serial state, a first valve (1) is arranged in a connecting pipeline of a refrigerant outlet pipeline of the condenser (E) and the evaporator (A), and two ends of the first valve (1) are connected with a solution pump in parallel; a second valve (2) is arranged in a connecting pipeline between a cooling water inlet pipeline of the condenser (E) and an outlet of the evaporator (A), and a fifth valve (5) is arranged in a connecting pipeline between the cooling water inlet pipeline of the condenser (E) and an outlet of the cooling tower (F).
2. The novel absorption heat pump according to claim 1, wherein: in the series and parallel states, a fourth valve (4) is arranged between the water inlet pipeline of the indoor heat exchanger (C) and the evaporator (A), and a third valve (3) is arranged between the water inlet pipeline of the indoor heat exchanger (C) and the absorber (B); the outlet pipeline of the indoor heat exchanger (C) is respectively connected with the pipeline of the cooling water entering the absorber (B) through a sixth valve (6) and connected with the inlet of the evaporator (A) through a seventh valve (7).
3. A novel absorption heat pump according to claim 2, wherein: in the serial and parallel states, a ninth valve (9) is arranged on a connecting pipeline between the outlet of the heat source heat exchanger (H) and the evaporator (A), and an eleventh valve (11) is arranged on a connecting pipeline between the inlet of the heat source heat exchanger (H) and the evaporator (A).
4. A novel absorption heat pump according to claim 3, wherein: a tenth valve (10) and a solution pump are arranged between the concentrated solution outlet of the generator (D) and the absorber (B) in the serial and parallel states; a solution pump is arranged between the solution inlet of the generator (D) and the solution outlet of the absorber (B); an eleventh valve (11) is arranged on the solution connecting pipeline of the generator (D) and the evaporator (A).
5. An application method of the novel absorption heat pump based on claim 4, which is characterized in that: the absorber (B) and the water pipeline of the condenser (E) are connected in series or in parallel, and a fifth valve (5) is omitted when the absorber (B) and the water pipeline of the condenser (E) are connected in parallel; the heat is supplied in winter through a low-temperature heat source, the high-temperature heat source is used for refrigerating in summer, a first type of absorption heat pump is adopted in summer, a second type of absorption heat pump is adopted in winter, and the heat supply is realized through switching of a valve and a solution pump;
summer season: the method comprises the steps of opening a first valve (1), a second valve (2), a fourth valve (4), a seventh valve (7), an eighth valve (8) and a tenth valve (10), closing a third valve (3), a fifth valve (5), a sixth valve (6), a ninth valve (9) and an eleventh valve (11), providing heat to a generator (D) by using an external high-temperature heat source to enable moisture in solution to be vaporized, enabling water to enter a condenser (E) to be cooled, throttling and depressurizing the first valve (1) to flow into an evaporator (A) and then spraying the cooled water onto a chilled water supply pipe, collecting the cooled water into a solution bag (G) through a water containing disc, pumping the cooled water into the evaporator (A) through a circulating pump, absorbing the vaporized water into the generator (D) by a lithium bromide concentrated solution, pumping the vaporized water into the generator (D) into a dilute solution, heating the generator (D) and then pumping the cooled water into an absorber (B) through a pressure difference and a circulating solution pump to realize self-standing, and completing circulation;
winter: the third valve (3), the fifth valve (5), the sixth valve (6), the ninth valve (9) and the eleventh valve (11) are opened, the first valve (1), the second valve (2), the fourth valve (4), the seventh valve (7), the eighth valve (8) and the tenth valve (10) are closed, heat is provided for the generator (D) by using an external medium-temperature heat source to vaporize water in the solution, the water enters the condenser (E) to be cooled, then the water enters the evaporator (A) to be sprayed on a medium-temperature heat source hot water pipe, then the water enters the solution bag (G) through the collection of the water containing disc, the water enters the evaporator (A) again through the circulating pump, the vaporized water is absorbed by lithium bromide concentrated solution in the generator (D) after being changed into a dilute solution, the dilute solution flows into the generator (D) through the pressure difference after being heated, the concentrated solution is converted into the concentrated solution after being pumped into the absorber (B) through the booster pump, the self-spraying is completed, the indoor heat is supplied by the absorber (B), and the circulation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259124.6A CN109269143B (en) | 2018-10-26 | 2018-10-26 | Novel absorption heat pump and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN111911990B (en) * | 2020-07-13 | 2022-03-29 | 东南大学 | Remote absorption type cooling and heating system based on solution energy storage |
| CN112432492B (en) * | 2021-01-27 | 2021-04-20 | 华东交通大学 | Based on lithium bromide low temperature medicinal material drying device |
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| US4520634A (en) * | 1983-04-13 | 1985-06-04 | Hitachi, Ltd. | Multi-stage absorption refrigeration system |
| US5479783A (en) * | 1993-04-07 | 1996-01-02 | Hitachi, Ltd. | Absorption chiller |
| JP2002349997A (en) * | 2001-05-29 | 2002-12-04 | Ebara Corp | Refrigeration unit |
| CN105571194A (en) * | 2015-12-24 | 2016-05-11 | 希望深蓝空调制造有限公司 | Lithium bromide absorption type combined heat pump |
| CN107388620A (en) * | 2017-09-20 | 2017-11-24 | 河海大学常州校区 | A kind of complex type solar lithium bromide absorption type air conditioner system |
| CN208936586U (en) * | 2018-10-26 | 2019-06-04 | 中交第四航务工程勘察设计院有限公司 | A kind of Novel absorption heat pump |
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| US4520634A (en) * | 1983-04-13 | 1985-06-04 | Hitachi, Ltd. | Multi-stage absorption refrigeration system |
| US5479783A (en) * | 1993-04-07 | 1996-01-02 | Hitachi, Ltd. | Absorption chiller |
| JP2002349997A (en) * | 2001-05-29 | 2002-12-04 | Ebara Corp | Refrigeration unit |
| CN105571194A (en) * | 2015-12-24 | 2016-05-11 | 希望深蓝空调制造有限公司 | Lithium bromide absorption type combined heat pump |
| CN107388620A (en) * | 2017-09-20 | 2017-11-24 | 河海大学常州校区 | A kind of complex type solar lithium bromide absorption type air conditioner system |
| CN208936586U (en) * | 2018-10-26 | 2019-06-04 | 中交第四航务工程勘察设计院有限公司 | A kind of Novel absorption heat pump |
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