CN112361659A - Super heat pump of energy potential coupling - Google Patents
Super heat pump of energy potential coupling Download PDFInfo
- Publication number
- CN112361659A CN112361659A CN202011359056.8A CN202011359056A CN112361659A CN 112361659 A CN112361659 A CN 112361659A CN 202011359056 A CN202011359056 A CN 202011359056A CN 112361659 A CN112361659 A CN 112361659A
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- Prior art keywords
- heat
- working medium
- absorption
- pump
- desorption
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- 230000008878 coupling Effects 0.000 title claims abstract description 14
- 238000010168 coupling process Methods 0.000 title claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 43
- 238000003795 desorption Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000009835 boiling Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims 1
- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical group FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 description 12
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention provides an energy potential coupling super heat pump, which realizes large-temperature-difference efficient heat exchange between a heat source and a heat sink without the assistance of other heat, simultaneously adopts two working media with different boiling points as circulating working media, realizes heat exchange through heat in the absorption and desorption processes, wherein a pressure boosting device can be driven by a motor or steam, and controls and adjusts the outlet temperature of the heat source and the heat sink by changing the compression ratio of the pressure boosting device.
Description
Technical Field
The invention belongs to the technical field of energy utilization, and particularly relates to a heat exchange device for extracting heat source energy to heat a heat sink.
Background
In the field of energy utilization, there is a wide range of heat exchange processes, and the heat transfer process can be generalized to transfer from a high temperature fluid to a low temperature fluid or from a low temperature fluid to a high temperature fluid. According to the second law of thermodynamics, heat can be spontaneously transferred from a high-temperature object to a low-temperature object only by using a common heat exchanger; if heat needs to be transferred from a low-temperature object to a high-temperature object, certain cost needs to be consumed, a certain amount of high-grade energy such as electric power, high-temperature steam or hot water needs to be consumed, and a heat pump, an injection device and the like need to be used. In the prior art, the heat pump technology has been accepted and applied in the market due to its high efficiency and reliability. However, due to the restrictions of thermodynamic cycle, physical properties of the cycle working medium, heat exchange coefficient, temperature and pressure resistance of the equipment, and the like, various heat pump technologies can only work in respective temperature ranges, the use of the absorption heat pump requires the use of a heat source and a third heat except for a heat sink, and the heat sink temperature of the compression heat pump is restricted by the temperature and pressure resistance of the compressor, so that higher heat sink temperature is difficult to realize. In order to realize the high-efficiency heat exchange of the large temperature difference between a heat source and a heat sink without the assistance of other heat, the invention provides an energy potential coupling super heat pump.
Disclosure of Invention
The heat pump comprises an absorption device 1, a desorption device 2, a pressure boosting device 3, a high-pressure cavity 4, a heat exchanger 5, a low-pressure cavity 6, a circulating pump 7, a heat sink inlet 8, a heat sink outlet 9, a heat source inlet 10 and a heat source outlet 11.
According to the energy potential coupling super heat pump, an absorption device 1 is connected with a heat sink inlet 8, a heat sink outlet 9, a circulating pump 7, a heat exchanger 5 and a pressure boosting device 3, the circulating pump 7 is connected with the absorption device 1 and the heat exchanger 5, the heat exchanger 5 is connected with the circulating pump 7, the absorption device 1 and a desorption device 2, the desorption device 2 is connected with a heat source inlet 10, a heat source outlet 11, the heat exchanger 5 and the pressure boosting device 3, and the pressure boosting device 3 is connected with the desorption device 2 and the absorption device 1.
In the potential coupling super heat pump, a heat sink is heated in an absorption device 1, and a heat source is cooled in a desorption device 2.
The energy potential coupling super heat pump is characterized in that the internal circulating working media of the energy potential coupling super heat pump are a working medium A and a working medium B, the boiling point of the working medium A is lower than that of the working medium B, the mixture of the working medium A and the working medium B circulates in an absorption device 1 and a desorption device 2, the mixture of the working medium A and the working medium B leaves the desorption device 2, then sequentially enters the absorption device 1 through a heat exchanger 5 and a circulating pump 7, then leaves the absorption device 1, then returns to the desorption device 2 through the heat exchanger 5, the medium in a boosting device 3 is the working medium A in a vapor state, and the boosting device 3 adopts a centrifugal compressor, a screw.
The potential coupling super heat pump has the working principle that:
the mixture of the working medium A and the working medium B is heated by a heat source in the desorption device 2, the concentrated mixture enters the absorption device 1 after passing through the heat exchanger 5 and the circulating pump 7, the mixture of the working medium A and the working medium B absorbs the working medium A steam from the pressure boosting device 3 in the absorption device 1, the heat generated in the absorption process is used for heating a heat sink, and the pressure boosting device 3 is used for compressing the working medium A steam in the low-pressure cavity 6, then boosting the pressure of the working medium A steam and then entering the high-pressure cavity 4. The booster 3 is driven by a motor or a steam turbine, and the temperature of a heat source and a heat sink outlet is adjusted by controlling the compression ratio of the booster 3.
Drawings
FIG. 1 is a diagram of a potential coupled super heat pump system.
Reference numerals:
1-absorption device, 2-desorption device, 3-pressure boosting device, 4-high pressure cavity, 5-heat exchanger, 6-low pressure cavity, 7-circulating pump, 8-heat sink inlet, 9-heat sink outlet, 10-heat source inlet, and 11-heat source outlet.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to fig. 1 in the embodiments of the present invention. In fig. 1, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this example the heat source temperature was reduced from 50 c to 20 c and the heat sink temperature was increased from 80 c to 120 c. The embodiment comprises an absorption device 1, a desorption device 2, a pressure boosting device 3, a high-pressure cavity 4, a heat exchanger 5, a low-pressure cavity 6, a circulating pump 7, a heat sink inlet 8, a heat sink outlet 9, a heat source inlet 10 and a heat source outlet 11. In the embodiment, an absorption device 1 is connected with a heat sink inlet 8, a heat sink outlet 9, a circulating pump 7, a heat exchanger 5 and a pressure boosting device 3, the circulating pump 7 is connected with the absorption device 1 and the heat exchanger 5, the heat exchanger 5 is connected with the circulating pump 7, the absorption device 1 and a desorption device 2, the desorption device 2 is connected with a heat source inlet 10, a heat source outlet 11, the heat exchanger 5 and the pressure boosting device 3, the pressure boosting device 3 is connected with the desorption device 2 and the absorption device 1, the heat sink is heated from 80 ℃ to 120 ℃ in the absorption device 1, the heat source is cooled from 50 ℃ to 20 ℃ in the desorption device 2, and the pressure boosting device 3 adopts a steam driven compressor.
In the embodiment, the internal circulating working medium is hexafluoropropane and dimethylacetamide, the mixture of hexafluoropropane and dimethylacetamide circulates in the absorption device 1 and the desorption device 2, the mixture of hexafluoropropane and dimethylacetamide leaves the desorption device 2 and then sequentially enters the absorption device 1 through the heat exchanger 5 and the circulating pump 7, then leaves the absorption device 1 and then returns to the desorption device 2 through the heat exchanger 5, and the medium in the pressure boosting device 3 is vaporous hexafluoropropane.
The operation principle and the mode of the embodiment are as follows:
the mixture of hexafluoropropane and dimethylacetamide is heated by a heat source in a desorption device 2, the concentrated mixture enters an absorption device 1 after passing through a heat exchanger 5 and a circulating pump 7, the generated vaporous hexafluoropropane enters a pressure boosting device 3 and then enters the absorption device 1 because the boiling point of hexafluoropropane is lower than that of dimethylacetamide, the mixture of hexafluoropropane and dimethylacetamide absorbs hexafluoropropane steam from the pressure boosting device 3 in the absorption device 1, heat generated in the absorption process is used for heating a heat sink, the absorbed mixture of hexafluoropropane and dimethylacetamide returns to the desorption device 2 through the heat exchanger 5, and the mixture of hexafluoropropane and dimethylacetamide is heated by the heat source in the desorption device 2 to generate vaporous hexafluoropropane, and the operation is repeated.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A potential coupled super heat pump, characterized by: the device comprises an absorption device (1), a desorption device (2), a pressure boosting device (3), a high-pressure cavity (4), a heat exchanger (5), a low-pressure cavity (6), a circulating pump (7), a heat sink inlet (8), a heat sink outlet (9), a heat source inlet (10) and a heat source outlet (11);
according to the energy potential coupling super heat pump, an absorption device (1) is connected with a heat sink inlet (8), a heat sink outlet (9), a circulating pump (7), a heat exchanger (5) and a pressure boosting device (3), the circulating pump (7) is connected with the absorption device (1) and the heat exchanger (5), the heat exchanger (5) is connected with the circulating pump (7), the absorption device (1) and a desorption device (2), the desorption device (2) is connected with a heat source inlet (10), a heat source outlet (11), the heat exchanger (5) and the pressure boosting device (3), and the pressure boosting device (3) is connected with the desorption device (2) and the absorption device (1);
the potential coupling super heat pump is characterized in that a heat sink is heated in an absorption device (1), and a heat source is cooled in a desorption device (2);
the potential coupling super heat pump is characterized in that the internal circulating working media of the potential coupling super heat pump are a working medium A and a working medium B, the boiling point of the working medium A is lower than that of the working medium B, the mixture of the working medium A and the working medium B circulates in an absorption device (1) and a desorption device (2), the mixture of the working medium A and the working medium B leaves the desorption device (2), then sequentially enters the absorption device (1) through a heat exchanger (5) and a circulating pump (7), then leaves the absorption device (1), then returns to the desorption device (2) through the heat exchanger (5), and the medium in a boosting device (3) is the working medium A in a steam state;
the potential coupling super heat pump has the working principle that: the mixture of the working medium A and the working medium B is heated by a heat source in the desorption device (2), the concentrated mixture enters the absorption device (1) after passing through the heat exchanger (5) and the circulating pump (7), the generated vaporous working medium A enters the boosting device (3) and then enters the absorption device (1) as the boiling point of the working medium A is lower than that of the working medium B, the mixture of the working medium A and the working medium B absorbs the working medium A steam from the boosting device (3) in the absorption device (1), the heat generated in the absorption process is used for heating a heat sink, the mixture of the working medium A and the working medium B after absorption is returned to the desorption device (2) through the heat exchanger (5), and the cycle is repeated.
2. The potential coupled super heat pump of claim 1, wherein: working medium A and working medium B are natural working medium or organic compound.
3. The potential coupled super heat pump of claim 1, wherein: the booster (3) is a centrifugal, screw, piston, scroll or roots compressor.
4. The potential coupled super heat pump of claim 1, wherein: the absorption device (1) and the desorption device (2) adopt shell-and-tube, plate or heat pipe heat exchangers.
5. The potential coupled super heat pump of claim 1, wherein: the booster device (3) is driven by a motor or a steam turbine, and the temperature of a heat source and the temperature of a heat sink outlet are adjusted by controlling the compression ratio of the booster device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359056.8A CN112361659A (en) | 2020-11-26 | 2020-11-26 | Super heat pump of energy potential coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359056.8A CN112361659A (en) | 2020-11-26 | 2020-11-26 | Super heat pump of energy potential coupling |
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| Publication Number | Publication Date |
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| CN112361659A true CN112361659A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011359056.8A Pending CN112361659A (en) | 2020-11-26 | 2020-11-26 | Super heat pump of energy potential coupling |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257280A (en) * | 1996-01-16 | 1997-09-30 | Ebara Corp | Desiccant air conditioner |
| CN101240953A (en) * | 2007-11-20 | 2008-08-13 | 东南大学 | Ammonia compression -absorption composite heat pump circulating device and circulate method |
| CN205174919U (en) * | 2015-11-16 | 2016-04-20 | 泰山集团股份有限公司 | A oil field used heat driven ammonia absorption formula refrigerator for lighter hydrocarbons are retrieved |
| CN111336685A (en) * | 2020-04-09 | 2020-06-26 | 华北电力大学 | Super heat pump |
| CN213984122U (en) * | 2020-11-26 | 2021-08-17 | 华北电力大学 | Super heat pump of energy potential coupling |
-
2020
- 2020-11-26 CN CN202011359056.8A patent/CN112361659A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257280A (en) * | 1996-01-16 | 1997-09-30 | Ebara Corp | Desiccant air conditioner |
| CN101240953A (en) * | 2007-11-20 | 2008-08-13 | 东南大学 | Ammonia compression -absorption composite heat pump circulating device and circulate method |
| CN205174919U (en) * | 2015-11-16 | 2016-04-20 | 泰山集团股份有限公司 | A oil field used heat driven ammonia absorption formula refrigerator for lighter hydrocarbons are retrieved |
| CN111336685A (en) * | 2020-04-09 | 2020-06-26 | 华北电力大学 | Super heat pump |
| CN213984122U (en) * | 2020-11-26 | 2021-08-17 | 华北电力大学 | Super heat pump of energy potential coupling |
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