CN220818027U - Heat pipe device for recovering exhaust heat of fresh air unit - Google Patents
Heat pipe device for recovering exhaust heat of fresh air unit Download PDFInfo
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- CN220818027U CN220818027U CN202322288756.8U CN202322288756U CN220818027U CN 220818027 U CN220818027 U CN 220818027U CN 202322288756 U CN202322288756 U CN 202322288756U CN 220818027 U CN220818027 U CN 220818027U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 10
- 230000008020 evaporation Effects 0.000 abstract description 6
- 238000001704 evaporation Methods 0.000 abstract description 6
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat pipe device for recovering exhaust heat of a fresh air handling unit, which comprises a heat pipe heat exchanger, a vacuum pump, a pure water tank, an electric regulating valve, a vacuum meter, a liquid level meter and a control cabinet, wherein the heat pipe heat exchanger is connected with the vacuum pump; according to the scheme, the pressure in the heat pipe heat exchanger is reduced to negative pressure through the vacuum pump, the evaporation temperature of pure water is also reduced, and when the pressure in the heat pipe heat exchanger is reduced to 1228Pa absolute pressure, the evaporation temperature of the pure water is 10 ℃; generating steam under the working condition of 10 ℃, and humidifying the air inlet by using the generated steam; compared with the traditional heat recovery mode, the invention has higher heat recovery efficiency, small equipment occupation, simple system and simple and convenient management.
Description
Technical Field
The invention relates to a heat pipe device for recovering exhaust heat of a fresh air unit
Background
At present, domestic indoor spaces such as hospitals, purifying plants, laboratories, storehouses and industrial plants have specific humidity requirements, especially in winter, fresh air is needed, the moisture content of the fresh air is low, a certain amount of moisture is needed to be added to meet production and process requirements, and humidifying equipment needs to consume huge electric quantity. According to statistics, the winter humidification energy consumption often occupies more than 1/3 of the power consumption of the air conditioning system. Because of the need to replace fresh air, a certain amount of air needs to be exhausted from the room, and the temperature and humidity in the room of the air conditioner are high, so that how to efficiently utilize the energy becomes a concern.
The existing indoor exhaust heat recovery and fresh air unit system is shown in figure 1, the indoor exhaust is conveyed to an exhaust air-water heat exchanger 7 through an exhaust fan 8 through an exhaust case 9, circulating water in the exhaust air-water heat exchanger 7 is heated, the water is used as a medium to recover the exhaust heat, and the heated water is conveyed into a fresh air-water heat exchanger 3 of the fresh air unit through a circulating water pump 6 to transfer the heat to fresh air; the fresh air enters the fresh air case 1 and is conveyed to the fresh air-water heat exchanger 3 through the fresh air fan 2, and the fresh air receives heat in the fresh air-water heat exchanger 3, so that the temperature of the fresh air is increased; because the circulating water system needs to maintain certain pressure and water loss, additional equipment such as a water supplementing pump and the like needs to be arranged.
The scheme has low heat recovery efficiency, large equipment occupation, complex system and complicated management.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the heat pipe device for recovering exhaust heat of the fresh air handling unit, which has the advantages of higher heat recovery efficiency, small equipment occupation, simple system and simple management.
The invention can be solved by the following technical scheme:
A heat pipe device for recovering exhaust heat of a fresh air handling unit comprises a heat pipe heat exchanger, a vacuum pump, a pure water tank, an electric regulating valve, a vacuum meter, a liquid level meter and a control cabinet; the heat pipe heat exchanger comprises an upper header, heat exchange pipes, a lower header, a steam pipe and a pure water pipe, wherein the steam pipe is connected and communicated with the upper header, the upper header is connected and communicated with the heat exchange pipes, the heat exchange pipes are connected and communicated with the lower header, and the lower header is connected and communicated with the pure water pipe; the upper header is connected and communicated with the vacuum gauge, and the liquid level gauge is arranged in the upper header; the steam pipe is connected and communicated with the vacuum pump; the pure water pipe is connected and communicated with the electric regulating valve; the electric regulating valve is communicated with the pure water tank; the vacuum gauge is electrically connected with the control cabinet, the liquid level gauge is electrically connected with the control cabinet, the vacuum pump is electrically connected with the control cabinet, and the electric regulating valve is electrically connected with the control cabinet.
Further, the upper header is of a shallow groove structure, four sides of the upper header in the horizontal direction are closed, the upper surface of the upper header is provided with holes and is communicated with the steam pipe in a connecting way, and the lower surface of the upper header is provided with a plurality of holes which are used for connecting and communicating the heat exchange pipe and containing water and steam; the heat exchange tube is of a slender hollow tubular structure, and is circular or elliptical in section, and the hollow part of the heat exchange tube can provide a flow channel for water and steam; the lower header is of a shallow groove structure, four sides in the horizontal direction and five sides in the lower surface are closed, an opening is formed in one side or the lower surface in the horizontal direction and is connected and communicated with the pure water pipe, and a plurality of holes are formed in the upper surface and are used for connecting and communicating the heat exchange pipe and containing water and steam.
Further, the medium contained in the heat pipe exchanger is water and steam; the heat exchange tube can be a copper tube, an aluminum tube, a steel tube or a fin tube.
The beneficial effects of the invention are as follows:
The pressure in the heat pipe heat exchanger is reduced by the vacuum pump, the evaporation temperature of pure water is also reduced, when the pressure in the heat pipe heat exchanger is reduced to 1228Pa, the evaporation temperature of pure water is 10 ℃, in winter, the air temperature of the exhaust unit is generally above 18 ℃, the pure water is heated by utilizing the heat of the temperature difference between 18 ℃ and 10 ℃, the heat exchange efficiency of the heat pipe heat exchanger is higher, the generated steam is used for humidifying the inlet air, and the higher heat utilization efficiency is obtained. Compared with the traditional heat recovery mode, the scheme has higher heat recovery efficiency, small equipment occupation area, simple system and simple and convenient management.
Drawings
FIG. 1 is a schematic view of a conventional heat recovery fresh air handling unit
FIG. 2 is a schematic diagram of the system of the present invention
FIG. 3 is a schematic view of the structure of the present invention
In the accompanying drawings:
1, a fresh air-water heat exchanger; 2, a fresh air fan; 3, a fresh air case; 4, a water supplementing water tank; 5, a water supplementing pump; 6, a circulating water pump; 7, exhausting the air-water heat exchanger; 8, an exhaust fan; 9, an exhaust case; 101 a humidifying port; 102, a fresh air case; 103, a fresh air fan; 104, a vacuum pump; 105, steam pipe; 106, a liquid level meter; 107, a vacuum gauge; 108, collecting an upper box; 109 heat exchange tubes; 110, a lower header; 111, pure water pipe; 112, a heat pipe exchanger; 113, an electric regulating valve; 114, a control cabinet; 115, a pure water tank; 116, an exhaust fan; 117, an exhaust box.
Detailed Description
Other advantages and effects of the present invention will become readily apparent to those skilled in the art from the following disclosure, when considered in light of the following detailed description of the invention.
As shown in fig. 2 and fig. 3, the heat pipe device for recovering exhaust heat of a fresh air handling unit of the present invention comprises a heat pipe heat exchanger 112, a vacuum pump 104, a pure water tank 115, an electric control valve 113, a vacuum gauge 107, a liquid level meter 106 and a control cabinet 114; the heat pipe heat exchanger 112 comprises an upper header 108, a heat exchange pipe 109, a lower header 110, a steam pipe 105 and a pure water pipe 111, wherein the steam pipe 105 is connected and communicated with the upper header 108, the upper header 108 is connected and communicated with the plurality of heat exchange pipes 109, the plurality of heat exchange pipes 109 are connected and communicated with the lower header 110, and the lower header 110 is connected and communicated with the pure water pipe 111; the upper header 108 is connected and communicated with the vacuum gauge 107, and the liquid level gauge 106 is arranged in the upper header 108; the steam pipe 105 is communicated with the vacuum pump 104 in a connecting way; the pure water pipe 111 is connected and communicated with the electric regulating valve 113; the electric control valve 113 is connected and communicated with the pure water tank 115; the vacuum gauge 107 is electrically connected with the control cabinet 114, the liquid level gauge 106 is electrically connected with the control cabinet 114, the vacuum pump 104 is electrically connected with the control cabinet 114, and the electric control valve 113 is electrically connected with the control cabinet 114.
Further, the upper header 108 has a shallow slot structure, and is closed on four sides in the horizontal direction, and has an opening on the upper surface and connected and communicated with the steam pipe 105, and a plurality of holes on the lower surface for connecting and communicating the heat exchange pipe 109 and containing water and steam; the heat exchange tube 109 is of an elongated hollow tubular structure, and has a circular or elliptical cross section, and the hollow part of the heat exchange tube 109 can provide a flow passage for water and water vapor; the lower header 110 has a shallow slot structure, and has four sides and five sides of its lower surface in the horizontal direction, and has an opening on one side or the lower surface in the horizontal direction and is connected and communicated with the pure water pipe 111, and has a plurality of holes on its upper surface for connecting and communicating the heat exchange pipe 109 and holding water and steam.
Further, the internal medium of the heat pipe exchanger 112 is pure water and steam; the heat exchange tube 109 may be a copper tube, or may be an aluminum tube, a steel tube, a fin tube, or the like.
A heat pipe device for fresh air handling unit retrieves heat of airing exhaust includes following steps:
The indoor exhaust enters an exhaust case 117, the indoor temperature is generally above 18 ℃, the exhaust air with the temperature above 18 ℃ is powered by an exhaust fan 116, heat is transferred to a heat exchange medium in the heat pipe exchanger 112, namely pure water, through a heat exchange pipe 109 of the heat pipe exchanger 112, the internal pressure of the heat pipe exchanger 112 is set to be 1228Pa, under the pressure, the pure water is heated and evaporated to become water vapor with the temperature of 10 ℃, the water vapor is collected in an upper header 108, and the water vapor is pumped out through a vacuum pump 104 and sent to a humidifying port 101 of a fresh air case 102 to humidify fresh air; as the water level in the heat pipe heat exchanger 112 decreases with the consumption of pure water, the water level signal is transmitted to the control cabinet 114 by the liquid level meter 106, the control cabinet 114 recognizes the water level meter 106 signal and converts the signal into an action signal of the electric control valve 113, and as the pressure inside the heat pipe heat exchanger 112 is lower than the atmospheric pressure, pure water in the pure water tank 115 enters the heat pipe heat exchanger 112 from the pure water pipe 111 by the operation of the electric control valve 113 and maintains the water level of the heat pipe heat exchanger 112; the vacuum gauge 107 measures the pressure inside the heat exchanger and transmits a signal to the control cabinet 114, the control cabinet 114 compares the pressure with a preset pressure (absolute pressure 1228 Pa), when the pressure inside the heat pipe heat exchanger 112 is higher than the preset pressure (absolute pressure 1228 Pa), the vacuum pump 104 is operated and extracts water vapor, the water vapor is sent out through the vapor pipe 105, and when the pressure inside the heat pipe heat exchanger 112 is equal to or lower than the preset pressure (absolute pressure 1228 Pa), the vacuum pump 104 is stopped.
According to the scheme, the pressure in the heat pipe heat exchanger is reduced to negative pressure through the vacuum pump, the evaporation temperature of pure water is also reduced, when the pressure in the heat pipe heat exchanger is reduced to 1228Pa, the evaporation temperature of the pure water is 10 ℃, and water vapor is generated under the working condition of 10 ℃. In winter, the air temperature of the exhaust unit is generally above 18 ℃, pure water is heated by utilizing heat of 18-10 ℃ to generate water vapor, the heat exchange efficiency of the heat pipe heat exchanger is higher, the generated vapor is used for humidifying the inlet air, and the higher heat utilization efficiency is obtained. Compared with the traditional heat recovery mode, the scheme has higher heat recovery efficiency, small equipment occupation area, simple system and simple and convenient management.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention as defined in the appended claims.
Claims (3)
1. The heat pipe device for recovering exhaust heat of the fresh air unit is characterized by comprising a heat pipe heat exchanger, a vacuum pump, a pure water tank, an electric regulating valve, a vacuum meter, a liquid level meter and a control cabinet; the heat pipe heat exchanger comprises an upper header, heat exchange pipes, a lower header, a steam pipe and a pure water pipe, wherein the steam pipe is connected and communicated with the upper header, the upper header is connected and communicated with the heat exchange pipes, the heat exchange pipes are connected and communicated with the lower header, and the lower header is connected and communicated with the pure water pipe; the upper header is connected and communicated with the vacuum gauge, and the liquid level gauge is arranged in the upper header; the steam pipe is connected and communicated with the vacuum pump; the pure water pipe is connected and communicated with the electric regulating valve; the electric regulating valve is communicated with the pure water tank; the vacuum gauge is electrically connected with the control cabinet, the liquid level gauge is electrically connected with the control cabinet, the vacuum pump is electrically connected with the control cabinet, and the electric regulating valve is electrically connected with the control cabinet.
2. The heat pipe device for recovering exhaust heat of a fresh air handling unit according to claim 1, wherein the upper header has a shallow groove structure, is closed on four sides in a horizontal direction, has an opening on an upper surface thereof and is connected and communicated with the steam pipe, and has a plurality of holes on a lower surface thereof for connecting and communicating the heat exchange pipe and containing water and steam; the heat exchange tube is of a slender hollow tubular structure, and is circular or elliptical in section, and the hollow part of the heat exchange tube can provide a flow channel for water and steam; the lower header is of a shallow groove structure, four sides in the horizontal direction and five sides in the lower surface are closed, an opening is formed in one side or the lower surface in the horizontal direction and is connected and communicated with the pure water pipe, and a plurality of holes are formed in the upper surface and are used for connecting and communicating the heat exchange pipe and containing water and steam.
3. A heat pipe device for recovering exhaust heat of a fresh air handling unit according to claim 1 or claim 2, wherein the internal holding medium of the heat pipe heat exchanger is water and steam; the heat exchange tube can be a copper tube, an aluminum tube, a steel tube or a fin tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322288756.8U CN220818027U (en) | 2023-08-24 | 2023-08-24 | Heat pipe device for recovering exhaust heat of fresh air unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322288756.8U CN220818027U (en) | 2023-08-24 | 2023-08-24 | Heat pipe device for recovering exhaust heat of fresh air unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220818027U true CN220818027U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322288756.8U Active CN220818027U (en) | 2023-08-24 | 2023-08-24 | Heat pipe device for recovering exhaust heat of fresh air unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220818027U (en) |
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2023
- 2023-08-24 CN CN202322288756.8U patent/CN220818027U/en active Active
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