CN111059678A - Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology - Google Patents
Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology Download PDFInfo
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- CN111059678A CN111059678A CN201911255342.7A CN201911255342A CN111059678A CN 111059678 A CN111059678 A CN 111059678A CN 201911255342 A CN201911255342 A CN 201911255342A CN 111059678 A CN111059678 A CN 111059678A
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- 238000005338 heat storage Methods 0.000 title claims abstract description 48
- 238000005516 engineering process Methods 0.000 title claims abstract description 25
- 230000001932 seasonal effect Effects 0.000 title claims description 10
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000004378 air conditioning Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0254—Ducting arrangements characterised by their mounting means, e.g. supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F2007/0025—Ventilation using vent ports in a wall
-
- 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
- Y02A30/272—Solar heating or cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- 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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a fresh air system for exchanging heat by using a solar cross-season underground heat storage technology, which comprises a house wall, an air outlet, an exhaust fan, an anti-seepage heat insulation layer, heat storage concrete, an air pipe, a mounting hole, a fan, a heat exchange piece in the pipe and an air dispersing device, wherein the air outlet is arranged on the house wall; an air outlet is formed in the top of the house wall, and an exhaust fan for exhausting air to the outside of the house is installed in the air outlet; the vent pipe is arranged in the heat storage concrete and is coiled; the air inlet end of the vent pipe is arranged on the outdoor ground, and the air outlet end of the vent pipe penetrates through the wall of the house and is arranged indoors; the part of the vent pipe in the heat storage concrete is provided with a mounting hole, and a heat exchange piece in the vent pipe is arranged in the mounting hole; the air inlet end is provided with a fan; the air outlet end is provided with an air dispersing device; the invention utilizes the cross-season underground heat storage technology to exchange heat for the fresh air system, heats the air circulated to the room by the fresh air system, and creates a natural and comfortable air circulation environment for the heating house in winter.
Description
Technical Field
The invention relates to a fresh air system for exchanging heat by using a solar seasonal underground heat storage technology.
Background
Solar energy is a renewable energy source with huge resource potential and plays a very important role in the clean energy strategy in China. The solar cross-season underground heat storage technology is the prior art (as an attached drawing 11) for collecting and storing solar energy, the heat collected by an overground solar heat collector is converted by a heat exchanger and finally stored in heat storage concrete wrapped with an impermeable heat insulation layer, the solar cross-season underground heat storage technology is mostly used for heating houses in winter, the cross-season heat storage technology considers that the excessive solar energy in summer is collected and stored, the excessive solar energy is released and utilized in winter, the solar heat in non-heating seasons is fully utilized, the adverse condition that the solar energy is insufficient in summer and winter is effectively overcome, but the problems exist in conventional heating or solar cross-season underground heat storage heating: outdoor temperature is low in winter, and door and window all can close and prevent the heat loss that looses outward in the room, and this will lead to indoor air not to circulate, leads to the dirty quality of indoor air low, and windowing ventilation just leads to indoor temperature to reduce, and the cold air that circulates and come in lets personnel in the room extremely uncomfortable, therefore it is necessary to study a new trend system that utilizes solar energy to stride season the heat transfer of underground heat-retaining technique.
Disclosure of Invention
The invention aims to provide a fresh air system for exchanging heat by using a solar seasonal underground heat storage technology.
A fresh air system for exchanging heat by using a solar cross-season underground heat storage technology comprises a house wall, an air outlet, an exhaust fan, an anti-seepage heat insulation layer, heat storage concrete, an air pipe, a mounting hole, a fan, a heat exchange piece in the pipe and an air dissipation device, wherein the anti-seepage heat insulation layer and the heat storage concrete are mechanisms for storing heat in the solar cross-season underground heat storage technology; the air-conditioning system is characterized in that an air outlet is formed in the top of the house wall, and an exhaust fan for exhausting air to the outside of the house is installed in the air outlet; the ventilating pipe is arranged in the heat storage concrete and is coiled; the air inlet end of the vent pipe is arranged on the outdoor ground, and the air outlet end of the vent pipe penetrates through the wall of the house and is arranged indoors; the part of the vent pipe in the heat storage concrete is provided with a mounting hole, and a heat exchange piece in the vent pipe is arranged in the mounting hole; the air inlet end is provided with a fan; the air outlet end is provided with an air dispersing device.
Preferably, the heat exchange piece in the tube comprises a fixed rod and a first fin; the fixed rod is fixed in the mounting hole in a sealing mode, and first fins are evenly arranged on the fixed rod.
Preferably, the fixing rod is a hollow metal rod.
Preferably, the fixing rods of the adjacent heat exchange members in the tubes and the first fins thereof are perpendicular to each other.
Preferably, the air dispersing device comprises a left fluted disc and a right fluted disc; the middle of the left disc groove is provided with an air inlet, and the air inlet of the left disc groove is sleeved at the air outlet end of the air vent pipe; and the right groove discs are welded on the left groove disc by fixing blocks in a staggered manner.
Preferably, the exposed part of the air outlet end of the air vent pipe is sleeved with a heat-insulating sleeve.
Preferably, a rain cover is arranged outside the fan.
Preferably, the part of the outer pipe wall of the breather pipe in the heat storage concrete is provided with a second fin.
The invention has the beneficial effects that the fresh air system for exchanging heat by using the solar cross-season underground heat storage technology is provided, the heat exchange is carried out on the fresh air system by using the cross-season underground heat storage technology, the air circulated to the room by the fresh air system is heated, the temperature in the room is not reduced, people in the room feel uncomfortable, and a natural and comfortable air circulation environment is created for a house heated in winter.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Figure 3 is a schematic view of the vent structure of the present invention.
Figure 4 is a schematic view of the vent tube portion of the present invention.
Fig. 5 is a schematic cross-sectional view of a snorkel according to the present invention.
Fig. 6 is a schematic structural view of the heat exchange member in the tube of the present invention.
FIG. 7 is a schematic view of the structure of the air diffuser of the present invention.
FIG. 8 is a schematic plan view of the air diffuser of the present invention.
Fig. 9 is a schematic view of the left fluted disc structure of the present invention.
Fig. 10 is a schematic view of the right fluted disc structure of the present invention.
Fig. 11 is a schematic diagram of a solar cross-season underground heat storage technology.
In the figure, a house wall 1, an air outlet 2, an exhaust fan 3, an impermeable heat insulation layer 4, heat storage concrete 5, an air pipe 6, an air inlet end 601, an air outlet end 602, a mounting hole 7, a fan 8, a pipe heat exchange part 9, a fixing rod 901, a first fin 902, a second fin 10, an air dispersing device 11, a left groove disc 1101, a right groove disc 1102, an air inlet 1103, a fixing block 1104, a rain cover 12 and a heat insulation pipe sleeve 13.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantageous effects of the present invention, but the present invention is not limited to the practical scope of the present invention.
As shown in the figure, the fresh air system for exchanging heat by using the solar cross-season underground heat storage technology comprises a house wall 1, an air outlet 2, an exhaust fan 3, an anti-seepage heat insulation layer 4, heat storage concrete 5, an air pipe 6, a mounting hole 7, a fan 8, a heat exchange piece 9 in the pipe and an air dissipation device 11, wherein the anti-seepage heat insulation layer 4 and the heat storage concrete 5 are mechanisms for storing heat in the solar cross-season underground heat storage technology; the air-conditioning system is characterized in that an air outlet 2 is formed in the top of the house wall 1, and an exhaust fan 3 for exhausting air to the outside of the house is installed in the air outlet 2; the vent pipe 6 is arranged in the heat storage concrete 5, and the vent pipe 6 is coiled; the air inlet end 601 of the air pipe 6 is arranged on the outdoor ground, and the air outlet end 602 of the air pipe 6 penetrates through the wall 1 of the house and is arranged indoors; the part of the vent pipe 6 in the heat storage concrete 5 is provided with a mounting hole 7, and an in-pipe heat exchange piece 9 is arranged in the mounting hole 7; the air inlet 601 is provided with a fan 8; the air outlet end 602 is provided with the air dispersing device 11, fresh air can smoothly enter a room through the air dispersing device, blowing feeling is avoided, and comfort is improved.
Preferably, the heat exchange member 9 in the tube comprises a fixing rod 901 and a first fin 902; the fixing rod 901 is fixed in the mounting hole 7 in a sealing manner, first fins 902 are uniformly arranged on the fixing rod 901, and the heat exchange piece 9 in the tube exchanges heat with air in the center of the air tube 6.
Preferably, the fixing rods 901 are hollow metal rods, and heat of the heat storage concrete 5 is more easily transferred from the hollow fixing rods 901 to the first fins 902.
Preferably, the fixing rods 901 and the first fins 902 of the adjacent heat exchanging elements 9 in the tubes are perpendicular to each other, and air flows between the first fins 902 which are criss-cross, so that the air is more easily heated dispersedly, and the heating effect of the air is improved.
Preferably, the air diffuser 11 comprises a left tray 1101, a right tray 1102; an air inlet 1103 is formed in the middle of the left disc slot 1101, and the air inlet 1103 of the left disc slot 1101 is sleeved at the air outlet end 602 of the air pipe 6; the right slotted plate 1102 is welded on the left slotted plate 1101 in a staggered mode through fixing blocks 1104, the area of an air duct formed by the air dispersing device 11 is gradually increased, heated air is dispersed through the air dispersing device 11, large air flow is avoided, and comfort is improved.
Preferably, the exposed part of the air outlet end 602 of the air pipe 6 is sleeved with the heat insulation sleeve 13.
Preferably, a rain cover 12 is installed outside the fan 8.
Preferably, the part of the outer tube wall of the vent tube 6 in the heat storage concrete 5 is provided with a second fin 10, so that the heat exchange area of the vent tube 6 is increased, and the heating effect on air is improved.
Examples, in use: fresh cold air outside is blown into the ventilating pipe 6 by the fan 8, the air flows to the air dispersing device 11 of the air outlet end 602 in the ventilating pipe 6, and when the air passes through the heat storage concrete 5 part in the flowing process, the air is subjected to heat exchange by the ventilating pipe 6, the heat exchange part 9 in the pipe and the second fins 10, the fresh cold air is changed into fresh warm air and continuously flows to the air dispersing device 11 of the air outlet end 602, and the fresh warm air smoothly enters the room after being dispersed by the air dispersing device 11; the dirty air in the room is discharged to the outside through the exhaust fan 3. The inlet and the outlet form air circulation.
Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to one skilled in the art that various changes and modifications can be made, and equivalents can be substituted for elements thereof without departing from the scope of the invention.
Claims (8)
1. A fresh air system for exchanging heat by using a solar cross-season underground heat storage technology comprises a house wall, an air outlet, an exhaust fan, an anti-seepage heat insulation layer, heat storage concrete, an air pipe, a mounting hole, a fan, a heat exchange piece in the pipe and an air dissipation device, wherein the anti-seepage heat insulation layer and the heat storage concrete are mechanisms for storing heat in the solar cross-season underground heat storage technology; the air-conditioning system is characterized in that an air outlet is formed in the top of the house wall, and an exhaust fan for exhausting air to the outside of the house is installed in the air outlet; the ventilating pipe is arranged in the heat storage concrete and is coiled; the air inlet end of the vent pipe is arranged on the outdoor ground, and the air outlet end of the vent pipe penetrates through the wall of the house and is arranged indoors; the part of the vent pipe in the heat storage concrete is provided with a mounting hole, and a heat exchange piece in the vent pipe is arranged in the mounting hole; the air inlet end is provided with a fan; the air outlet end is provided with an air dispersing device.
2. The fresh air system for heat exchange by solar energy seasonal underground heat storage technology as claimed in claim 1, wherein the heat exchange member in the tube comprises a fixing rod, a first fin; the fixed rod is fixed in the mounting hole in a sealing mode, and first fins are evenly arranged on the fixed rod.
3. The fresh air system for heat exchange by solar energy seasonal underground heat storage technology as claimed in claim 2, wherein the fixing rod is a hollow metal rod.
4. The fresh air system for heat exchange by solar energy seasonal underground heat storage technology as claimed in claim 3, wherein the fixing rods of the heat exchange members in adjacent tubes and the first fins thereof are perpendicular to each other.
5. The fresh air system for heat exchange by solar energy seasonal underground heat storage technology as claimed in claim 1, wherein the air diffusing device comprises a left tray and a right tray; the middle of the left disc groove is provided with an air inlet, and the air inlet of the left disc groove is sleeved at the air outlet end of the air vent pipe; and the right groove discs are welded on the left groove disc by fixing blocks in a staggered manner.
6. The fresh air system for heat exchange by solar energy seasonal underground heat storage technology as claimed in claim 1, wherein the exposed part of the air outlet end of the air pipe is sleeved with a heat insulation sleeve.
7. The fresh air system for heat exchange by using the solar cross-season underground heat storage technology as claimed in claim 1, wherein a rain cover is installed outside the fan.
8. The fresh air system for heat exchange by solar energy seasonal underground heat storage technology as claimed in claim 1, wherein the portion of the outer tube wall of the air tube in the heat storage concrete is provided with a second fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255342.7A CN111059678A (en) | 2019-12-10 | 2019-12-10 | Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255342.7A CN111059678A (en) | 2019-12-10 | 2019-12-10 | Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059678A true CN111059678A (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911255342.7A Pending CN111059678A (en) | 2019-12-10 | 2019-12-10 | Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101411293A (en) * | 2008-11-18 | 2009-04-22 | 江苏大学 | Active mode heat collection and thermal storage system for solar energy greenhouse |
| CN102338415A (en) * | 2011-11-02 | 2012-02-01 | 大连理工大学 | Self-controlled hot-air solar floor heat storage system |
| CN204612043U (en) * | 2015-04-28 | 2015-09-02 | 张�杰 | A kind of soil-air heat-exchange system |
| CN205137762U (en) * | 2015-11-16 | 2016-04-06 | 河北工业大学 | Low energy consumption building new trend system |
| CN108386951A (en) * | 2018-02-06 | 2018-08-10 | 娄永琪 | A kind of buried pipe ventilation device |
| CN211316454U (en) * | 2019-12-10 | 2020-08-21 | 北方瑞能(内蒙古)集团有限公司 | Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology |
-
2019
- 2019-12-10 CN CN201911255342.7A patent/CN111059678A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101411293A (en) * | 2008-11-18 | 2009-04-22 | 江苏大学 | Active mode heat collection and thermal storage system for solar energy greenhouse |
| CN102338415A (en) * | 2011-11-02 | 2012-02-01 | 大连理工大学 | Self-controlled hot-air solar floor heat storage system |
| CN204612043U (en) * | 2015-04-28 | 2015-09-02 | 张�杰 | A kind of soil-air heat-exchange system |
| CN205137762U (en) * | 2015-11-16 | 2016-04-06 | 河北工业大学 | Low energy consumption building new trend system |
| CN108386951A (en) * | 2018-02-06 | 2018-08-10 | 娄永琪 | A kind of buried pipe ventilation device |
| CN211316454U (en) * | 2019-12-10 | 2020-08-21 | 北方瑞能(内蒙古)集团有限公司 | Fresh air system for exchanging heat by solar energy seasonal underground heat storage technology |
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