CN115956693B - Heating system for cigar drying room and control mode thereof - Google Patents
Heating system for cigar drying room and control mode thereof Download PDFInfo
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- CN115956693B CN115956693B CN202310091188.4A CN202310091188A CN115956693B CN 115956693 B CN115956693 B CN 115956693B CN 202310091188 A CN202310091188 A CN 202310091188A CN 115956693 B CN115956693 B CN 115956693B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 50
- 238000001035 drying Methods 0.000 title claims abstract description 35
- 235000019506 cigar Nutrition 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 156
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000005057 refrigeration Methods 0.000 claims description 17
- 230000007613 environmental effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a heating system for cigar drying rooms and a control mode thereof, wherein the heating system comprises a hot water host, a power balance box and an exchange internal machine, wherein the power balance box is connected with the hot water host in a matched manner through a pipeline, the exchange internal machine is provided with a plurality of heat water pipelines and cold water pipelines, the exchange internal machine is connected with the hot water pipelines and the cold water pipelines through pipelines, and the hot water pipelines and the cold water pipelines are connected with the hot water host in a matched manner. According to the invention, the hot side balance component and the cold side balance component in the power balance box are used for carrying out heat exchange adjustment in the cooling or heating process of the drying room respectively, and the heat release or absorption is carried out between the external environment and the internal environment of the drying room by means of water flow, so that the heat pump cooling system has an energy storage function, is convenient for carrying out temperature adjustment, and can avoid the shortening of the service life and the increase of energy consumption caused by frequent start and stop of the heat pump compressor.
Description
Technical Field
The invention relates to the technical field of cigar airing, in particular to a heating system for a cigar airing room and a control mode thereof.
Background
At present, the cigar planting area in China is more and more, the demand of a drying room is increased, and because the cigar drying process has a temperature requirement of about fifty degrees at most, a water source heat pump is generally adopted as a heat source of the drying room, water is fed and heated by absorbing heat in air, the water is sent into an inner machine of the drying room for circulation through the water pump, and the heat of the water in the inner machine is taken away through a fan to supply heat to the drying room;
The existing cigar drying room heating system has the defects that: because cigar drying temperature is more than thirty degrees in the early stage and is forty-five to fifty degrees in the later stage, and the highest ambient temperature at that time probably is about thirty-eight degrees, therefore, in the whole cigar drying process, the time period of heating and cooling may be needed, and the existing heating system mainly relies on the continuous start-stop action of the heat pump and the compressor to complete heating or cooling when heating or cooling, the continuous start-stop heat pump and the compressor affect the service life, and the energy consumption is high.
Disclosure of Invention
The invention aims to provide a heating system for a cigar drying room and a control mode thereof, which are used for solving the technical problems that the service life is influenced by continuous starting and stopping of a heat pump in the heating or cooling process of the cigar drying room and the energy consumption is high in the prior art.
The technical problems to be solved by the invention can be realized by the following technical scheme:
The heat supply system for the cigar drying room comprises a hot water host machine, a power balance box and an exchange internal machine, wherein the power balance box is connected with the hot water host machine in a matched manner through a pipeline, a plurality of exchange internal machines are arranged, the exchange internal machine is connected with a hot water pipeline and a cold water pipeline through pipelines, and the hot water pipeline and the cold water pipeline are connected with the hot water host machine in a matched manner;
The dynamic balance box is internally provided with a hot side balance assembly and a cold side balance assembly, the hot side balance assembly is matched with the heating plate type heat exchanger, and the cold side balance assembly is matched with the cooling plate type heat exchanger.
As a further scheme of the invention: the hot water host is internally provided with a heating plate type heat exchanger and a refrigerating plate type heat exchanger, the hot water pipeline is connected with the heating plate type heat exchanger in the hot water host in a matched mode, and the cold water pipeline is connected with the refrigerating plate type heat exchanger in the hot water host in a matched mode.
As a further scheme of the invention: the heat exchange device is characterized in that a heat exchange assembly and a cold exchange assembly are arranged in the exchange inner machine, the heat exchange assembly is connected with a hot water pipeline in a matched mode, and the cold exchange assembly is connected with a cold water pipeline in a matched mode.
As a further scheme of the invention: the hot side balance assembly comprises a hot water pump, a first balance heat exchanger and a first fan, wherein the hot water pump, the first balance heat exchanger and the first fan are all arranged in the dynamic balance box, the first fan is matched with the first balance heat exchanger, the first balance heat exchanger is connected with the heating plate type heat exchanger through a pipeline, a hot side electromagnetic valve is arranged on the pipeline between the first balance heat exchanger and the heating plate type heat exchanger, and the hot water pump is matched and connected on the pipeline between the first balance heat exchanger and the heating plate type heat exchanger.
As a further scheme of the invention: the cold side balance assembly comprises a cold water pump, a second balance heat exchanger and a second fan, wherein the cold water pump, the second balance heat exchanger and the second fan are all arranged in a power balance box, the second fan is matched with the second balance Heng Huanre, the second balance Heng Huanre and the refrigeration plate heat exchanger are connected through a pipeline, a cold side electromagnetic valve is arranged on a pipeline between the second balance Heng Huanre and the refrigeration plate heat exchanger, the cold water pump is matched and connected on a pipeline between the second balance Heng Huanre and the refrigeration plate heat exchanger, and a bypass valve is arranged between a pipeline where the first balance heat exchanger is located and a pipeline where the second balance heat exchanger is located.
A control mode of a heating system for a cigar drying room comprises the following specific steps:
Firstly, cooling and refrigerating operation of a drying room is carried out: when the backwater temperature of hot water in the hot water host is smaller than the critical set temperature value of integral refrigeration and is larger than the set environmental temperature of the airing room, the hot side electromagnetic valve is opened, the hot water pump and the first fan are started to radiate heat to the external environment, and when the backwater temperature is smaller than the set environmental temperature of the airing room, the hot water pump and the first fan are closed;
Secondly, when the backwater temperature of hot water in the hot water host is larger than the critical set temperature value of integral refrigeration and is larger than the environmental temperature to be set in the airing room, the bypass valve and the hot side electromagnetic valve are opened, the hot water pump, the first fan and the second fan are started, water flow is shunted to the second flat Heng Huanre device through the bypass valve to radiate heat to the external environment, and when the backwater temperature is smaller than the environmental temperature to be set in the airing room, the hot water pump, the first fan and the second fan are closed;
Thirdly, heating the sun-curing room: when the cold water backwater temperature of the hot water host is larger than the critical set temperature value of local heating, the cold side electromagnetic valve is opened, when the cold water backwater temperature is smaller than the environment temperature to be set by the airing room, the cold water pump and the second fan are started to exchange heat with the external environment, and when the backwater flow temperature is larger than the environment temperature to be set by the airing room, the cold water pump and the second fan are closed;
And fourthly, when the cold water backwater temperature in the hot water host is smaller than the critical set temperature value for local heating, the bypass valve is opened, the cold side electromagnetic valve is opened, when the cold water backwater temperature is smaller than the environment temperature to be set in the airing room, the cold water pump, the first fan and the second fan are started, water flows are shunted to the first balance heat exchanger through the bypass valve to exchange heat with the external environment, and when the backwater flow temperature is larger than the environment temperature to be set in the airing room, the cold water pump, the first fan and the second fan are closed.
The invention has the beneficial effects that:
1. According to the invention, the hot side balance component and the cold side balance component in the power balance box are used for carrying out heat exchange adjustment in the cooling or heating process of the drying room respectively, and the heat release or absorption is carried out between the external environment and the internal environment of the drying room by means of water flow, so that the heat pump cooling system has an energy storage function, is convenient for carrying out temperature adjustment, and can avoid the shortening of the service life and the increase of energy consumption caused by frequent start and stop of the heat pump compressor;
2. According to the invention, the bypass valve in the power balance box is controlled to be closed or opened under the condition of different backwater temperatures, so that the balance heat exchanger in the power balance box can be used selectively according to the conditions, and the local or whole heat exchange can be conveniently and effectively carried out.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the heating system for a cigar drying room according to the present invention;
fig. 2 is a schematic diagram of the components of the dynamic balance box in the present invention.
In the figure: 1. a hot water host; 2. a dynamic balance box; 3. a heat row exchange assembly; 4. a cold row switching assembly; 5. a hot water pump; 6. a cold water pump; 7. a hot side solenoid valve; 8. a bypass valve; 9. a first balance heat exchanger; 10. a first fan; 11. a second fan; 12. a heating plate type heat exchanger; 13. a refrigeration plate heat exchanger; 14. exchanging an internal machine; 15. a second flatwise Heng Huanre; 16. a hot water pipe; 17. a cold water pipe; 18. a cold side solenoid valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-2, a heating system for cigar drying room comprises a hot water main machine 1, a power balance box 2 and an exchange internal machine 14, wherein a heating plate type heat exchanger 12 and a refrigerating plate type heat exchanger 13 are arranged in the hot water main machine 1, the power balance box 2 is connected with the hot water main machine 1 through pipeline cooperation, the exchange internal machine 14 is provided with a plurality of heat exchangers for distribution in the cigar drying room, and the exchange internal machine 14 is connected with a hot water pipeline 16 and a cold water pipeline 17 through pipelines, and the hot water pipeline 16 and the cold water pipeline 17 are connected with the hot water main machine 1 through pipelines, specifically: the hot water pipeline 16 is in fit connection with the heating plate type heat exchanger 12 in the hot water host 1, the cold water pipeline 17 is in fit connection with the refrigerating plate type heat exchanger 13 in the hot water host 1, the heat-row exchange assembly 3 and the cold-row exchange assembly 4 are arranged in the heat exchange internal machine 14, the heat-row exchange assembly 3 is in fit connection with the hot water pipeline 16, the cold-row exchange assembly 4 is in fit connection with the cold water pipeline 17, the heat-row exchange assembly 3 is used for releasing hot water into air in a drying room to heat up indoors, the cold-row exchange assembly 4 is used for exchanging heat of the air in the drying room into cold water to realize heat absorption, and indoor cooling is realized;
A hot side balance assembly and a cold side balance assembly are arranged in the power balance box 2, the hot side balance assembly is matched with the heating plate type heat exchanger 12, and the cold side balance assembly is matched with the cooling plate type heat exchanger 13;
the hot side balance assembly comprises a hot water pump 5, a first balance heat exchanger 9 and a first fan 10, wherein the hot water pump 5, the first balance heat exchanger 9 and the first fan 10 are all arranged in the power balance box 2, the first fan 10 is matched with the first balance heat exchanger 9, the first balance heat exchanger 9 is connected with the heating plate type heat exchanger 12 through a pipeline, a hot side electromagnetic valve 7 is arranged on the pipeline between the first balance heat exchanger 9 and the heating plate type heat exchanger 12, and the hot water pump 5 is matched and connected on the pipeline between the first balance heat exchanger 9 and the heating plate type heat exchanger 12;
The cold side balance assembly comprises a cold water pump 6, a second balance heat exchanger 15 and a second fan 11, wherein the cold water pump 6, the second balance heat exchanger 15 and the second fan 11 are all arranged in the dynamic balance box 2, the second fan 11 is matched with the second balance heat exchanger 15, the second balance heat exchanger 15 is connected with the refrigeration plate heat exchanger 13 through a pipeline, a cold side electromagnetic valve 18 is arranged on a pipeline between the second balance heat exchanger 15 and the refrigeration plate heat exchanger 13, the cold water pump 6 is matched and connected on a pipeline between the second balance heat exchanger 15 and the refrigeration plate heat exchanger 13, a pipeline where the first balance heat exchanger 9 is located is communicated with a pipeline where the second balance heat exchanger 15 is located, and a bypass valve 8 is arranged.
A control mode of a heating system for a cigar drying room comprises the following specific steps:
Firstly, cooling and refrigerating operation of a drying room is carried out: when the backwater temperature of hot water in the hot water host machine 1 is smaller than the critical set temperature value (the set temperature value is added with the loss error of backwater temperature in a pipeline) of integral refrigeration and is larger than the environment temperature to be set in the airing room, the bypass valve 8 is kept closed, the hot side electromagnetic valve 7 is opened, the hot water pump 5 and the first fan 10 are started simultaneously, the hot water pump 5 is used for driving backwater flow to pass through the first balance heat exchanger 9 so as to realize heat exchange with the external environment, the first fan 10 is used for accelerating heat dissipation to the external environment so as to realize water flow cooling, so that low-temperature water flow is obtained, when the backwater temperature is smaller than the environment temperature to be set in the airing room, the hot water pump 5 and the first fan 10 are closed so as to stop heat dissipation to the external environment, and the low-temperature water flow is subjected to heat exchange through the cold row exchange component 4 in the exchange inner machine 14 in the airing room, heat is absorbed from the airing room, and local cooling and refrigeration is realized;
The second step, when the temperature of the backwater of hot water in the hot water host 1 is greater than the critical set temperature value (the set temperature value is added with the loss error of backwater temperature in a pipeline) of integral refrigeration and is greater than the environment temperature to be set in the airing room (the set temperature value is added with the loss error of backwater temperature in the pipeline), the bypass valve 8 and the hot side electromagnetic valve 7 are opened, the hot water pump 5, the first fan 10 and the second fan 11 are started at the same time, the cold water pump 6 is kept closed, the hot water pump 5 is used for driving backwater flow to pass through the first balance heat exchanger 9 so as to realize heat exchange with the external environment, and the first fan 10 is used for accelerating heat dissipation to the external environment so as to realize water flow cooling, meanwhile, the bypass valve 8 is used for being in an open state so as to realize heat exchange with the external environment, and the second balance heat dissipation effect is enhanced by virtue of the second fan 11, when the temperature backwater is less than the environment temperature to be set in the airing room (the environment temperature value is subtracted by the loss error of backwater temperature in the pipeline), the hot water pump 5, the first fan 10 and the second fan 11 are closed, the heat dissipation is stopped, and the heat dissipation assembly is cooled down, and the heat is exchanged from the airing room 4 to the external environment, and the heat is discharged to the cooling assembly is cooled down;
Thirdly, heating the sun-curing room: when the cold water backwater temperature in the hot water host 1 is larger than the critical set temperature value of local heating (the set temperature value minus the loss error of backwater temperature in a pipeline), the bypass valve 8 is closed, the cold side electromagnetic valve 18 is opened, when the cold water backwater temperature is smaller than the environment temperature to be set in the drying room, the cold water pump 6 and the second fan 11 are started, the cold water pump 6 is used for driving backwater flow to pass through the second balance heat exchanger 15, the heat exchange is carried out between the second balance heat exchanger 15 and the environment with higher temperature, and the heat exchange effect is promoted by the second fan 11, so that heating water flow is obtained, when the backwater flow temperature is larger than the environment temperature to be set in the drying room, the cold water pump 6 and the second fan 11 are closed, heat exchange with the external environment is stopped, and meanwhile, the heating water flow is released into the drying room through the heat exchange assembly 3 in the heat exchange inner machine 14 in the drying room, so that local heating and heating are realized;
And fourthly, when the backwater temperature of cold water in the hot water host 1 is smaller than the critical set temperature value (the set temperature value is less than the loss error of the backwater temperature in a pipeline) of local heating, the bypass valve 8 is opened, the cold side electromagnetic valve 18 is opened, when the backwater temperature of cold water is smaller than the environment temperature to be set in the airing room, the cold water pump 6, the first fan 10 and the second fan 11 are started, the cold water pump 6 is used for driving the backwater to pass through the second balance heat exchanger 15, heat exchange is carried out between the backwater and the environment temperature by virtue of the second balance heat exchanger 15, and the heat exchange effect is promoted by virtue of the second fan 11, so that the water flow is heated, and because the bypass valve 8 is in an opened state, the water flow is conveniently shunted to the first balance heat exchanger 9 by virtue of the bypass valve 8, the heat exchange is enhanced and the environment is carried out by virtue of the second fan 11, so that the heated water flow is obtained, when the backwater temperature is larger than the environment temperature to be set in the airing room, the airing room is closed, the cold water pump 6, the first fan 10 and the second fan 11 are stopped, the heat exchange is carried out with the environment heat exchange is carried out, and the water flow is simultaneously heated and the heat exchange is carried out through the heat exchange assembly in the airing room and the heat exchange indoor machine 14, so that the heating is released.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (2)
1. The heat supply system for the cigar drying room comprises a hot water host machine (1), a power balance box (2) and an exchange internal machine (14), and is characterized in that the power balance box (2) is connected with the hot water host machine (1) in a matched manner through pipelines, the exchange internal machine (14) is provided with a plurality of heat supply pipes, the exchange internal machine (14) is connected with a hot water pipeline (16) and a cold water pipeline (17) through pipelines, and the hot water pipeline (16) and the cold water pipeline (17) are connected with the hot water host machine (1) in a matched manner;
A hot side balance assembly and a cold side balance assembly are arranged in the power balance box (2), the hot side balance assembly is matched with the heating plate type heat exchanger (12), and the cold side balance assembly is matched with the cooling plate type heat exchanger (13);
A heating plate type heat exchanger (12) and a refrigerating plate type heat exchanger (13) are arranged in the hot water host machine (1), the hot water pipeline (16) is connected with the heating plate type heat exchanger (12) in the hot water host machine (1) in a matched mode, and the cold water pipeline (17) is connected with the refrigerating plate type heat exchanger (13) in the hot water host machine (1) in a matched mode;
The hot side balance assembly comprises a hot water pump (5), a first balance heat exchanger (9) and a first fan (10), wherein the hot water pump (5), the first balance heat exchanger (9) and the first fan (10) are all arranged in the power balance box (2), the first fan (10) and the first balance heat exchanger (9) are matched, the first balance heat exchanger (9) and the heating plate heat exchanger (12) are connected through a pipeline, a hot side electromagnetic valve (7) is arranged on a pipeline between the first balance heat exchanger (9) and the heating plate heat exchanger (12), and the hot water pump (5) is matched and connected on a pipeline between the first balance heat exchanger (9) and the heating plate heat exchanger (12);
The cold side balance assembly comprises a cold water pump (6), a second plate Heng Huanre device (15) and a second fan (11), wherein the cold water pump (6), the second plate Heng Huanre device (15) and the second fan (11) are all arranged in the power balance box (2), the second fan (11) and the second plate Heng Huanre device (15) are matched, the second plate Heng Huanre device (15) and the refrigeration plate heat exchanger (13) are connected through a pipeline, a cold side electromagnetic valve (18) is arranged on a pipeline between the second plate Heng Huanre device (15) and the refrigeration plate heat exchanger (13), the cold water pump (6) is matched and connected on a pipeline between the second plate Heng Huanre device (15) and the refrigeration plate heat exchanger (13), and a bypass valve (8) is arranged between a pipeline where the first balance heat exchanger (9) is located and a pipeline where the second plate Heng Huanre device (15) is located;
The heat exchange device is characterized in that a heat exchange assembly (3) and a cold exchange assembly (4) are arranged in the exchange internal machine (14), the heat exchange assembly (3) is connected with a hot water pipeline (16) in a matched mode, and the cold exchange assembly (4) is connected with a cold water pipeline (17) in a matched mode.
2. A control method of a heating system for a cigar drying room, for controlling a heating system for a cigar drying room according to claim 1, characterized by the following specific steps:
Firstly, cooling and refrigerating operation of a drying room is carried out: when the backwater temperature of hot water in the hot water host machine (1) is smaller than the critical set temperature value of integral refrigeration and is larger than the set environmental temperature of the airing room, the hot side electromagnetic valve (7) is opened, the hot water pump (5) and the first fan (10) are started to radiate heat to the external environment, and when the backwater temperature is smaller than the set environmental temperature of the airing room, the hot water pump (5) and the first fan (10) are closed;
Secondly, when the backwater temperature of hot water in the hot water host machine (1) is larger than the critical set temperature value of integral refrigeration and is larger than the environment temperature to be set in the airing room, the bypass valve (8) and the hot side electromagnetic valve (7) are opened, the hot water pump (5), the first fan (10) and the second fan (11) are started, water flow is shunted to the second flat Heng Huanre device (15) through the bypass valve (8), heat is dissipated to the external environment, and when the backwater temperature is smaller than the environment temperature to be set in the airing room, the hot water pump (5), the first fan (10) and the second fan (11) are closed;
Thirdly, heating the sun-curing room: when the cold water backwater temperature in the hot water host machine (1) is larger than the critical set temperature value of local heating, the cold side electromagnetic valve (18) is opened, when the cold water backwater temperature is smaller than the set environment temperature of the airing room, the cold water pump (6) and the second fan (11) are started to exchange heat with the external environment, and when the backwater flow temperature is larger than the set environment temperature of the airing room, the cold water pump (6) and the second fan (11) are closed;
Fourth step, when cold water return water temperature is less than the critical temperature value that heats locally in hot water host computer (1), bypass valve (8) opens, open cold side solenoid valve (18), when cold water return water temperature is less than the ambient temperature that the sunning room will be set for, start cold water pump (6), first fan (10) and second fan (11), and rivers shunt to first balanced heat exchanger (9) through bypass valve (8), carry out the heat exchange with external environment, when return water stream temperature is greater than the ambient temperature that the sunning room will be set for, close cold water pump (6), first fan (10) and second fan (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310091188.4A CN115956693B (en) | 2023-02-09 | 2023-02-09 | Heating system for cigar drying room and control mode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310091188.4A CN115956693B (en) | 2023-02-09 | 2023-02-09 | Heating system for cigar drying room and control mode thereof |
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| Publication Number | Publication Date |
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| CN115956693A CN115956693A (en) | 2023-04-14 |
| CN115956693B true CN115956693B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310091188.4A Active CN115956693B (en) | 2023-02-09 | 2023-02-09 | Heating system for cigar drying room and control mode thereof |
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| CN (1) | CN115956693B (en) |
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| JP2013215182A (en) * | 2012-04-09 | 2013-10-24 | Soki:Kk | Greenhouse heating system |
| KR101402160B1 (en) * | 2013-06-10 | 2014-06-03 | 임영섭 | Cascaded heat pump boiler for nonstop water heating |
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| CN111141115A (en) * | 2020-01-13 | 2020-05-12 | 广东省现代农业装备研究所 | Heat pump and steam combined cold and hot water balancing system and control method |
| CN113203217A (en) * | 2021-06-11 | 2021-08-03 | 湖北中烟工业有限责任公司武汉卷烟厂 | Auxiliary air conditioning system and method for cigarette factory |
| WO2022262674A1 (en) * | 2021-06-14 | 2022-12-22 | 浙江国祥股份有限公司 | Dual cold source air source heat pump unit with full heat recovery |
-
2023
- 2023-02-09 CN CN202310091188.4A patent/CN115956693B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004257586A (en) * | 2003-02-24 | 2004-09-16 | Matsushita Electric Ind Co Ltd | Refrigerator using carbon dioxide as refrigerant |
| JP2013215182A (en) * | 2012-04-09 | 2013-10-24 | Soki:Kk | Greenhouse heating system |
| CN102997499A (en) * | 2012-12-28 | 2013-03-27 | 东南大学 | Air source heat pump device capable of producing cold water and hot mater at same time |
| KR101402160B1 (en) * | 2013-06-10 | 2014-06-03 | 임영섭 | Cascaded heat pump boiler for nonstop water heating |
| CN205980438U (en) * | 2016-08-18 | 2017-02-22 | 佛山市大芝热泵制冷设备有限公司 | Take cold and hot recovery heat pump of equalizer |
| CN111141115A (en) * | 2020-01-13 | 2020-05-12 | 广东省现代农业装备研究所 | Heat pump and steam combined cold and hot water balancing system and control method |
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| Publication number | Publication date |
|---|---|
| CN115956693A (en) | 2023-04-14 |
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