CN110553329A - Rainwater pipe tunnel wind building outer wall surface cooling system and method - Google Patents
Rainwater pipe tunnel wind building outer wall surface cooling system and method Download PDFInfo
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- CN110553329A CN110553329A CN201910897032.9A CN201910897032A CN110553329A CN 110553329 A CN110553329 A CN 110553329A CN 201910897032 A CN201910897032 A CN 201910897032A CN 110553329 A CN110553329 A CN 110553329A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
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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
- 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
- F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
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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
- 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
- F24F2005/0064—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 using solar energy
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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
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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
- Y02B10/40—Geothermal heat-pumps
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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
- 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)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Thermal Sciences (AREA)
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Abstract
The invention provides a rainwater pipe and tunnel wind building outer wall surface cooling system which comprises: the rainwater collecting pipe is communicated with a rainwater well, one end of the underground air channel is communicated with the rainwater collecting pipe, the other end of the underground air channel is communicated with the bottom of the heated cavity, and the heated cavity is arranged on the outer surface of the building outer wall body; be provided with the wall body wind channel with indoor intercommunication on the building outer wall, be provided with valve two in the wall body wind channel, the cavity top of being heated is provided with the air exit, and the air exit is provided with valve one, and the first half of cavity of being heated is through the indoor intercommunication of wall body wind channel with the building. The invention also provides a method for cooling the outer wall surface of the rainwater pipe tunnel wind building, which comprises the following steps: utilize secret downspout as the tunnel tuber pipe, only need add and establish one section secret wind channel, its length only is the distance of outer wall to outdoor downspout, and the rainy day can also play the effect of getting rid of the rainwater, regards outdoor inlet of air as outdoor gutter inlet simultaneously, greatly reduced system cost.
Description
Technical Field
the invention relates to a rainwater pipe tunnel wind outer wall surface cooling system, in particular to a rainwater pipe tunnel wind building outer wall surface cooling system and method.
Background
The building energy consumption accounts for about one fourth of the total social energy consumption, and the energy consumption of the air conditioner accounts for a big part in the building energy consumption. The great force to advance the building section has become the countless. Building energy conservation can be divided into energy conservation of a building body and energy conservation of a building equipment system, wherein the energy conservation of the building body is particularly key. The energy conservation of the building body mainly comprises the steps of well preserving heat and insulating heat of the building enclosure and reducing the energy consumption of the building in a passive mode.
when solar radiation directly irradiates the surface of the building outer wall, the temperature of the surface of the outer wall is increased to 50-60 ℃ and is far higher than that of outdoor air, so that the heat transfer quantity through the outer wall is increased, the indoor thermal environment is deteriorated or the air conditioning load is increased.
because the underground soil temperature is less affected by outdoor temperature, the temperature fluctuation is less, the temperature is lower than that of outdoor air in summer and higher than that of outdoor air in winter, and the soil temperature depends on the local annual average temperature and the soil depth. The application of the tunnel wind to reduce the indoor temperature in some previous projects is mainly to directly introduce the tunnel wind into the room, reduce the indoor temperature in summer and improve the indoor temperature in winter. This method of utilization requires a precondition that the temperature of the tunnel wind is lower than the temperature of the indoor air in summer and higher than the temperature of the indoor air in winter. This requires a certain depth of the tunnel, otherwise it is difficult to meet the temperature requirements. Under the condition that the tunnel is shallow, and the temperature of tunnel wind is higher than the temperature of indoor air and lower than the temperature of outdoor air, how to utilize the tunnel wind is a problem worthy of research.
Accordingly, there is a need for improvements in the art.
disclosure of Invention
The invention aims to provide an efficient rainwater pipe underground tunnel wind building outer wall surface cooling system and method.
in order to solve the technical problem, the invention provides a rainwater pipe and tunnel wind building outer wall surface cooling system which comprises: comprises a main rainwater pipe, an underground air duct and a heated cavity;
The rainwater main pipe is communicated with the rainwater well; one end of the underground air duct is communicated with the rainwater main pipe, and the other end of the underground air duct is communicated with the bottom of the heated cavity;
The heated cavity is arranged on the outer surface of the building outer wall body; a wall air duct communicated with the indoor is arranged on the outer wall of the building, a second valve is arranged in the wall air duct,
an air outlet is formed in the top of the heated cavity, and a first valve is arranged at the air outlet; the upper half part of the heated cavity is communicated with the interior of a building through a wall air duct.
As an improvement of the external wall surface cooling system of the rainwater pipe tunnel wind building of the invention: the device also comprises a header;
The top of the header is provided with a header air outlet, and the central position of the bottom of the header is provided with a rainwater pipe air outlet; the outlet of the rainwater pipe is connected with the underground air duct; the top of the header is provided with at least two header air outlets from the middle to two sides and the diameter of the header is from small to large.
as a further improvement of the external wall surface cooling system of the rainwater pipe tunnel wind building of the invention:
the two ends of the rainwater main pipe are communicated with the two rainwater wells, and the connecting position of the underground air duct and the rainwater main pipe is located in the centers of the two rainwater wells.
The invention also provides a method for cooling the outer wall surface of the rainwater pipe tunnel wind building, which comprises the following steps:
The summer working condition comprises the following steps:
1) Closing the second valve and opening the first valve;
2) the solar radiation irradiates on the metal partition plate of the heated cavity, and the air in the heated cavity absorbs heat, so that the temperature rises and flows upwards to form a solar chimney effect;
3) The outdoor air enters the rainwater header pipe from the rainwater well under the driving of the solar chimney effect, passes through the underground air duct, flows into the header through the rainwater pipe air outlet, and then enters the heated cavity through the header air outlet after the temperature of the outdoor air is reduced;
4) the low temperature air that the underground air duct flowed into the cavity that is heated makes building outer wall temperature reduce, absorbs the solar radiation heat that the metal partition plate of the cavity that is heated transmitted simultaneously, discharges through the air exit, reduces the difference in temperature of building outer wall body outer wall face and building outer wall body internal face to reduce through the building outer wall body by outdoor to indoor heat transfer volume, make room cold load reduce.
The improvement of the method for cooling the outer wall surface of the rainwater pipe and tunnel wind building of the invention is as follows:
The winter condition comprises the following steps:
1) closing the first valve and opening the second valve;
2) The solar radiation irradiates on the metal partition plate of the heated cavity, and the air in the heated cavity absorbs heat, so that the temperature rises and flows upwards to form a solar chimney effect;
3) The outdoor air enters the rainwater header pipe from the rainwater well under the driving of the solar chimney effect, flows into the header through the underground air duct and the rainwater pipe air outlet, rises in temperature and then enters the heated cavity through the header air outlet;
4) the rainwater pipe flows into the air of the heated cavity, so that the temperature of the outer wall surface of the building outer wall body is increased, and meanwhile, the heat transferred by the metal partition plate of the heated cavity is received and enters the indoor space through the air duct of the wall body.
the rainwater pipe underground tunnel wind building outer wall surface cooling system and the method have the technical advantages that:
1. Utilize secret downspout as the tunnel tuber pipe, only need add and establish one section secret wind channel, its length only is the distance of outer wall to outdoor downspout, and its buried depth, material and pipe diameter are unanimous with outdoor downspout, and rainy day can also play the effect of getting rid of the rainwater, regard outdoor inlet for the entry of outdoor air with outdoor inlet for rain simultaneously, greatly reduced system cost.
2. In summer, the temperature of outdoor air passing through a rainwater pipe tunnel has a certain limit, the temperature of an outlet of the outdoor air is often higher than that of indoor air, and if the outdoor air is directly introduced into a room, heat can be added to the room. The present invention uses this portion of air to lower the temperature of the exterior wall surface, thereby reducing the amount of heat transferred into the room through the exterior wall. Outdoor air has certain temperature rise through the rainwater pipe tunnel in winter, and then enters the heated cavity to be heated by solar energy, and the air temperature can be higher than the indoor air temperature usually, can directly send into indoor, provides the heat for the room.
3. the metal partition plate additionally arranged on the outer wall shields the outer wall from solar radiation, so that the surface of the outer wall is not influenced by the solar radiation.
4. the heated cavity 4 formed by the metal partition plate and the outer wall receives solar radiation heat, and the internal air is heated and rises to form hot pressing to become power for system operation, so that a fan is not required to be driven, and the system cost and the operation energy consumption are reduced.
5. the invention can be used in four seasons, can reduce the surface temperature of the building outer wall in summer, and can directly provide hot air for the indoor in winter. The indoor ventilation can be realized in spring and autumn.
6. The rainwater pipe is idle in sunny days, rainwater can be discharged in rainy days, the additionally arranged underground air duct can be used for discharging rainwater in rainy days, and the rainwater pipe has the characteristic of multiple purposes of one system.
7. the invention has simple structure, long service life, greatly reduced cost, almost zero operating cost and convenient popularization and application.
Drawings
the following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of an external wall surface cooling system of a storm sewer tunnel wind building of the present invention.
fig. 2 is a view a-a of fig. 1.
1-air outlet, 2-valve I, 3-valve II, 4-heated cavity, 5-header, 6-rainwater pipe air outlet, 7-underground air duct, 8-outdoor ground, 9-rainwater header pipe, 10-building outer wall body, 11-indoor, 12-wall air duct, 13-outdoor rainwater inlet and 14-header air outlet.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
example 1, a rain pipe underground tunnel wind building exterior wall surface cooling system, applied to a building, as shown in fig. 1-2,
a rainwater pipeline buried in the underground of an outdoor ground 8 around a building is used as an underground air duct 7, a rectangular heated cavity 4 is formed on the outer surface of an outer wall 10 of the building by using a metal partition plate, and the metal partition plate is made of a steel plate, a stainless steel plate, an aluminum alloy plate and the like which are subjected to anticorrosion treatment. The underground air duct 7 is communicated with the heated cavity 4, the system takes the underground air duct 7 (rainwater pipeline) as an outdoor air cooling tunnel, the hot pressure (solar chimney effect) generated by the heated cavity 4 under solar radiation is utilized to provide power for outdoor air, and the outdoor air cooled by the underground air duct 7 is introduced into the heated cavity 4.
the two ends of the rainwater main pipe 9 are communicated with the two rainwater wells 13, the underground air duct 7 is communicated with the rainwater main pipe 9, and the connecting position of the underground air duct 7 and the rainwater main pipe 9 is located in the centers of the two rainwater wells 13.
A wall air duct 12 is arranged on the building outer wall 10, a second valve 3 is arranged in the wall air duct 12, and the position, close to the top, of the upper half part of the heated cavity 4 is communicated with an indoor 11 of the building through the wall air duct 12.
an air outlet 1 is arranged at the top of the heated cavity 4, and a first valve 2 is arranged at the air outlet 1.
in summer, the metal partition of the heated cavity 4 shields solar radiation, and meanwhile, the temperature-reducing air in the underground air duct 7 flows through the heated cavity 4 to reduce the temperature of the outer surface of the building outer wall body 10 and reduce the temperature difference between the inner side and the outer side of the building outer wall body 10, so that the temperature difference heat transfer of the building outer wall body 10 is reduced, the building cold load is reduced, and the energy consumption is reduced. The center of the bottom of the header 5 is provided with a rain pipe air outlet 6 connected with an underground air duct 7, and the top of the header 5 is provided with a group of header air outlets 14 with diameters distributed from small to large from the middle to two sides. Because the air inlet (the rain pipe air outlet 6) is positioned at the middle position, if the diameters of the header air outlets 14 are the same, the air quantity is concentrated at the header air outlet 14 at the middle position, and uniform air outlet cannot be realized. In order to ensure the balance of air quantity, the upper part of the header 5 positioned below the heated cavity 4 is provided with a plurality of header air outlets 14, and the diameters of the header air outlets are distributed from small to large from the middle to two sides.
In winter, the air heated by the solar energy through the heating cavity 4 after being heated by the underground air duct 7 can be directly introduced into the room 11 through the wall air duct 12, so that the indoor thermal environment in winter can be greatly improved.
the working process of the invention is as follows:
summer working condition: the solar radiation irradiates on the metal partition plate of the heated cavity 4, and the air in the heated cavity 4 absorbs heat, rises in temperature and flows upwards to form a solar chimney effect. Outdoor air enters the rainwater header pipe 9 from the rainwater well 13 under the driving of the solar chimney effect, flows into the header 5 from the rainwater pipe air outlet 6 through the additionally arranged underground air duct 7, and enters the heated cavity 4 through the header air outlet 14 after the outdoor air temperature is reduced to some extent due to the lower temperature of the underground rainwater pipe (the underground air duct 7). Under the working condition of summer, the second valve 3 is in a closed state, the first valve 2 is in an open state, the temperature of the outer wall surface of the building is reduced by low-temperature air flowing into the heated cavity 4 from the underground air duct 7, and meanwhile, solar radiation heat transferred by the metal partition plate of the heated cavity 4 is absorbed and is exhausted through the air outlet 1.
in the process of the air flowing, because the air temperature of the underground rainwater pipeline (the underground air duct 7) is lower than the outdoor air temperature in summer, the temperature of the outer wall surface of the outer wall can be reduced, which means that the temperature difference between the outer wall surface of the building outer wall body 10 and the inner wall surface of the building outer wall body 10 can be reduced, so that the heat transfer quantity from the outdoor to the indoor through the building outer wall body 10 is reduced, the cold load of a room is reduced, meanwhile, the temperature of the inner wall surface of the building outer wall body 10 is also reduced, and the thermal environment of the indoor 11 is improved.
Assuming that an outdoor rainwater pipe (underground air duct 7) is buried by 1m, the pipe diameter is 0.3m, two rainwater wells 13 are 40m apart, the distance between an outer wall 10 of a building and a rainwater main pipe 9 is 5m, so that the total length of a tunnel is 20+5+1 ═ 26m, the temperature in the underground air duct 7 is 26 ℃, the air flow rate in the underground air duct 7 is 0.69m/s, the available air volume is 0.0488m 3/s, taking Hangzhou as an example, the calculated temperature of an outdoor air conditioner in Hangzhou summer (the air temperature t1 at an air duct inlet) is 35.5 ℃, and according to a calculation formula of tunnel wind building cooling technical rules (CECS 340-2013):
in the formula:
c-specific heat of air [ J/(kg. DEG C) ], which can be 1010J/(kg. DEG C);
K-Heat transfer coefficient [ W/(m 2. degree. C.) ];
t6-Ambient temperature of air duct (. degree. C.) ;
t 1 -air temperature (. degree. C.) at the air duct inlet;
t 3 -air temperature (. degree. C.) at the outlet of the duct;
g-ventilation (kg/s);
f, air duct heat exchange area (m 2);
16-Length of air duct(m)
Alpha-convection heat transfer coefficient in tube [ W/(m 2. degree. C.) ] taking 5.68W/(m 2. degree. C.);
β -shape correction factor;
u-perimeter length (m) of cross section of tunnel;
a-thermal conductivity coefficient (m2/h), 0.871 x 10-3m 2/h;
Tau is the time (h) of continuous operation in the cooling period, and 2160h is taken;
Lambda-thermal conductivity [ W/(m.deg.C) ], and is taken as 3W/(m.deg.C).
The heat transfer coefficient K of the duct wall can be calculated to be 3.42W/(m 2 deg.c), t 3 to be 28.54 deg.c, that is, the air temperature t 1 at the air duct inlet is 35.5 deg.c, the air temperature at the air duct outlet is 28.54 deg.c, and the temperature drop is 6.96 deg.c, so that a lower air temperature can be obtained by using the outdoor rain pipe (underground duct 7).
working conditions in winter: the solar radiation irradiates on the metal partition plate of the heated cavity 4, and the air in the heated cavity 4 absorbs heat, rises in temperature and flows upwards to form a solar chimney effect. Outdoor air enters the rainwater header pipe 9 from the rainwater well 13 under the driving of the solar chimney effect, flows into the header 5 from the rainwater pipe air outlet 6 through the additionally arranged underground air duct 7, and enters the heated cavity 4 through the header air outlet 14 after the outdoor air temperature rises to some extent due to the higher temperature of the underground air duct 7. Under the working condition in winter, the first valve 2 is in a closed state, the second valve 3 is in an open state, the air flowing into the heated cavity 4 from the rainwater pipe enables the temperature of the outer wall surface of the building outer wall 10 to be increased, and meanwhile, the rainwater pipe receives heat transferred by the metal partition plate of the heated cavity 4 and enters the indoor space 11 through the wall air duct 12.
referring to the calculation method of the working condition in summer, the calculated temperature of the outdoor air conditioner in Hangzhou winter is-2.2 ℃, the temperature of the air entering the heated cavity 4 in winter is 3.86 ℃ and the temperature rise is 6.06 ℃. Under the condition of good solar radiation, the temperature of the heated cavity 4 can be raised by twenty or more degrees, if the temperature is raised by 20 ℃, the temperature of the air sent into the room can reach 26.06 ℃, and heat can be directly provided for the room.
Transition season: according to the thermal environment condition of the indoor 11, a summer working condition mode can be selected, namely, the first valve 2 is opened, the second valve 3 is closed, and air is exhausted to the outdoor; and a winter working condition mode can be selected, namely, the second valve 3 is opened, the first valve 2 is closed, and air is introduced into the room.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (5)
1. Rainwater pipe tunnel wind building outer wall face cooling system, its characterized in that: comprises a main rainwater pipe (9), an underground air duct (7) and a heated cavity (4);
The rainwater header pipe (9) is communicated with a rainwater well (13); one end of the underground air duct (7) is communicated with the rainwater main pipe (9), and the other end of the underground air duct is communicated with the bottom of the heated cavity (4);
The heated cavity (4) is arranged on the outer surface of the building outer wall body (10); a wall air duct (12) communicated with the indoor space (11) is arranged on the building outer wall (10), a second valve (3) is arranged in the wall air duct (12),
an air outlet (1) is formed in the top of the heated cavity (4), and a first valve (2) is arranged at the air outlet (1); the upper half part of the heated cavity (4) is communicated with the interior (11) of the building through a wall air duct (12).
2. The rainwater pipe underground tunnel wind building outer wall surface cooling system according to claim 1, characterized in that: also comprises a header (5);
A header air outlet (14) is formed in the top of the header (5), and a rainwater pipe air outlet (6) is formed in the center of the bottom of the header (5); the rain pipe air outlet (6) is connected with an underground air duct (7); the top of the header (5) is provided with at least two header air outlets (14) from the middle to two sides and the diameter of the header air outlets is from small to large.
3. The rainwater pipe underground tunnel wind building outer wall surface cooling system according to claim 2, characterized in that:
the two ends of the rainwater main pipe (9) are respectively communicated with the two rainwater wells (13), and the connecting position of the underground air duct (7) and the rainwater main pipe (9) is positioned in the centers of the two rainwater wells (13).
4. The method for cooling the external wall surface of a rainwater pipe underground tunnel wind building by using the system for cooling the external wall surface of a rainwater pipe underground tunnel wind building as claimed in any one of claims 1 to 3, wherein:
the summer working condition comprises the following steps:
1) Closing the second valve (3) and opening the first valve (2);
2) The solar radiation irradiates on the metal partition plate of the heated cavity (4), and the air in the heated cavity (4) absorbs heat, so that the temperature rises and flows upwards to form a solar chimney effect;
3) The outdoor air enters the rainwater header pipe (9) from the rainwater well (13) under the driving of the solar chimney effect, flows into the header (5) from the rainwater pipe air outlet (6) through the underground air duct (7), the temperature of the outdoor air is reduced, and then enters the heated cavity (4) through the header air outlet (14);
4) The low-temperature air that underground air duct (7) flowed into and is heated cavity (4) makes building outer wall surface temperature reduce, absorbs the solar radiation heat that the metal partition plate of being heated cavity (4) transmitted simultaneously, discharges through air exit (1), reduces the difference in temperature of building outer wall body (10) outer wall surface and building outer wall body (10) internal face to reduce through building outer wall body (10) by outdoor to indoor heat transfer volume, make room cold load reduce.
5. The method for cooling the external wall surface of a rainwater pipe underground tunnel wind building by using the system for cooling the external wall surface of a rainwater pipe underground tunnel wind building as claimed in any one of claims 1 to 3, wherein:
the winter condition comprises the following steps:
1) closing the first valve (2) and opening the second valve (3);
2) The solar radiation irradiates on the metal partition plate of the heated cavity (4), and the air in the heated cavity (4) absorbs heat, so that the temperature rises and flows upwards to form a solar chimney effect;
3) the outdoor air enters the rainwater header pipe (9) from the rainwater well (13) under the driving of the solar chimney effect, flows into the header (5) from the rainwater pipe air outlet (6) through the underground air duct (7), the temperature of the outdoor air rises, and then enters the heated cavity (4) through the header air outlet (14);
4) the air flowing into the heated cavity (4) from the rainwater pipe enables the temperature of the outer wall surface of the building outer wall body (10) to be increased, and meanwhile, the heat transferred by the metal partition plate of the heated cavity (4) is received and enters the indoor space (11) through the wall air duct (12).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818557A (en) * | 2021-10-20 | 2021-12-21 | 郑州升达经贸管理学院 | Wind-heat circulating type energy-saving building |
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