CN-122013909-A - Adjustable heat collection and storage composite wall, operation method and application

CN122013909ACN 122013909 ACN122013909 ACN 122013909ACN-122013909-A

Abstract

The invention discloses an adjustable heat collection and storage composite wall, an operation method and application thereof, comprising a double-layer sliding window arranged at the upper part of a building south elevation window frame and a turnover phase change heat collection and storage wall arranged at the lower part; the double-layer sliding window comprises a single-layer glass window and a sliding window, the turnover phase-change heat collection and storage wall comprises a single-layer glass cover plate, a turnover phase-change heat storage composite shutter wall and an openable ventilation channel, phase-change layers of the phase-change heat storage composite shutter wall face outdoors in daytime, shutter units are distributed in a staggered mode, hot air flows indoors and outdoors, the shutter units are turned 180 degrees at night, the phase-change layers of the phase-change heat storage composite shutter wall face indoors, and the shutter units are meshed with each other to prevent cold air from penetrating. According to the invention, the heat-collecting and heat-accumulating composite wall body is regulated in a time-sharing manner to perform heat preservation, heat collection and heat accumulation operation modes, so that the heat supply quantity of the enclosure structure is more matched with the climate characteristics of the solar energy enrichment area.

Inventors

Ye yiyang
YANG LIU
QIAO YUHAO
WANG JINGDUO
LIU YAN

Assignees

西安建筑科技大学

Dates

Publication Date: 20260512
Application Date: 20260313

Claims (10)

1. The adjustable heat collection and storage composite wall is characterized by comprising a double-layer sliding window arranged at the upper part of a building south elevation window frame and a turnover phase change heat collection and storage wall arranged at the lower part of the building south elevation window frame; the double-layer sliding window comprises a single-layer glass window (1) on the outer side and a sliding window (3) on the inner side, wherein the sliding window can longitudinally slide along the upper part and the lower part of the window frame; The turnover phase-change heat collection and storage wall comprises a single-layer glass cover plate (5) positioned at the outer side of a window frame, a turnover phase-change heat storage composite shutter wall (6) positioned at the inner side of the window frame and an openable ventilation channel (7); under the daytime working condition, the phase change layer of the phase change heat storage composite shutter wall (6) faces outdoors, the shutter units are distributed in a staggered way, and hot air flows indoors and outdoors; Under the cloudy day operation condition of night or weak solar radiation, the louver units turn over at 180 degrees, the phase change layer of the phase change heat storage composite louver wall (6) faces indoors, and all the louver units are mutually meshed to prevent cold air from penetrating.
2. The adjustable heat collection and storage composite wall body according to claim 1 is characterized in that an opening fan which is opened in a rotating mode is arranged on a single-layer glass window (1).
3. The adjustable heat collection and storage composite wall body according to claim 1, wherein the sliding window (3) is installed on the inner side of the window frame and comprises a fixed window sash and a sliding window sash, the fixed window sash is provided with an openable window sash, and the sliding window sash is arranged on a chute of the window frame and longitudinally slides along the double-layer sliding window and the turnover phase-change heat collection and storage wall.
4. The adjustable heat collection and storage composite wall body according to claim 1 is characterized in that the turnover phase change heat collection and storage wall is of a frame structure, a single-layer glass cover plate (5) is arranged on an outer frame of the frame and is flush with a single-layer glass window (1), and a phase change heat storage composite shutter wall (6) is arranged inside the frame and is fixed up and down through an openable ventilation channel (7).
5. An adjustable heat collection and storage composite wall according to claim 1, wherein the phase change heat storage composite shutter wall (6) comprises a plurality of shutter units and a transmission system; Each shutter unit comprises a phase change layer (6-1), a structural layer (6-2) and an insulation layer (6-3), and the heads and the tails of the shutter units are hinged in series through insulation baffles (6-4); The transmission system is connected with each shutter unit through a transmission connecting rod (6-9) to realize the overturning of different working conditions.
6. The adjustable heat collection and storage composite wall body according to claim 5 is characterized in that a phase change layer (6-1) and a heat preservation layer (6-3) of the shutter unit are respectively fixed on a structural layer (6-2) front and back through anchor bolts, and the outer surface of the phase change layer (6-1) is coated with a solar radiation selective absorption coating.
7. The adjustable heat collection and storage composite wall body according to claim 5 is characterized in that a heat preservation soft baffle (6-5) is arranged on a ventilation channel (7) which can be opened and closed at the bottom of the phase change heat storage composite shutter wall (6).
8. The adjustable heat collection and storage composite wall according to claim 5, wherein the transmission structure comprises a stepping motor (6-10) arranged at the bottom of a window frame, an output shaft of the stepping motor (6-10) is meshed with a transmission connecting rod (6-9), a transmission gear (6-7) is arranged on the transmission connecting rod (6-9) corresponding to each shutter unit position, and the transmission gear (6-7) is meshed with a damping rotating shaft (6-11) fixed on a structural layer (6-2) of each shutter unit.
9. A method of operating an adjustable thermal-arrest thermal storage composite wall according to any one of claims 1 to 8, comprising: Under the daytime running condition, when the outdoor solar radiation intensity is more than or equal to 300W/m 2 , the upper sliding window (3) is pulled down to the lower part of the window frame, and the single-layer glass window (1) at the upper part of the window frame is used for heat collection; A single-layer glass cover plate (5) +reversible phase-change heat storage composite shutter + a sliding window (3) type double-layer ventilation glass curtain wall is formed at the lower part of the window frame; the phase change layer (6-1) of each shutter unit of the lower phase change heat storage composite shutter wall (6) is turned to the outdoor side, and the heat preservation layers (6-3) are distributed obliquely towards the indoor side; the cold air in the room is subjected to heat exchange with the outdoor hot air through an openable ventilation channel (7) and then returns to the room; When the outdoor solar radiation intensity is less than 300W/m 2 , the upper sliding window (3) is pulled up to the upper part of the window frame, and a combined window with low heat transfer coefficient of single-layer glass, closed air interlayer and double-layer glass is formed at the upper part of the window frame; Each shutter unit of the phase-change heat-storage composite shutter wall (6) at the lower part is turned over by 180 degrees, the phase-change layer (6-1) is turned over to the indoor side, and the heat-preservation layer (6-3) faces the outdoor side to form an external heat-preservation and internal phase-change structure.
10. Use of an adjustable heat collection and storage composite wall according to any one of claims 1-8 in a solar energy enrichment area of Qinghai-Tibet plateau.

Description

Adjustable heat collection and storage composite wall, operation method and application Technical Field The invention relates to the field of solar energy buildings, in particular to a composite wall body capable of changing heat collection, heat storage and heat preservation performances, an operation method and application thereof. Background The solar energy utilization type enclosure structures such as the direct benefit window, the heat collecting and heat accumulating wall, the additional sunlight room and the like are widely accepted by the masses of solar energy enrichment areas represented by Qinghai-Tibet plateau because of the characteristics of easy maintenance, economy, energy conservation and the like, and the solar energy utilization type enclosure structure is a solar energy utilization mode suitable for the plateau environment, wherein the heat collecting and heat accumulating wall and the direct benefit window are mainly applied to urban multi-layer buildings, and the additional sunlight room is mainly applied to single buildings in towns and agriculture and pasture areas. However, the traditional solar energy utilization type enclosure structure cannot match the thermal performance requirement difference caused by temperature-radiation fluctuation due to single thermal performance. Taking a direct benefited window as an example, solar radiation needs to be introduced into a room as much as possible in the daytime, the solar energy heat gain coefficient needs to be as large as possible, and better heat preservation performance needs to be required at night, the heat transfer coefficient of the whole window needs to be as small as possible, but the traditional glass window is difficult to achieve low heat transfer coefficient while ensuring high solar energy heat gain coefficient, and therefore heat collection and heat preservation effects are difficult to achieve. And for the heat collecting and accumulating wall, the heat collecting and accumulating wall mainly performs convection heat supply through the ventilation opening, the peak value of the convection heat supply is large, the fluctuation is large, and the heat supply time is mainly concentrated in the daytime. The heat supply at night is mainly realized by virtue of heat conduction of the wall body, but most of the heat stored in the heat storage wall is lost outdoors rather than conducted indoors because the outdoor temperature is lower than the indoor temperature in winter, so that most of the stored heat is not utilized. Therefore, it is needed to provide an adjustable heat collection and storage composite wall body which is especially suitable for the thermal performance day-night difference requirement caused by the radiation air temperature double-wave motion characteristics of high daytime comprehensive temperature and low night air temperature in the solar energy enrichment area of the Qinghai-Tibet plateau, can adjust the enclosure structure according to the external climate change and solves the problems of heat preservation, heat collection and heat storage of the time division structure. Disclosure of Invention In order to solve the defects in the prior art, the invention aims to provide an adjustable heat collection and heat storage composite wall body, an operation method and application thereof, wherein the composite wall body carries out heat preservation, heat collection and heat storage operation modes by adjusting the heat collection and heat storage composite wall body in a time-sharing manner, the method is matched with the change of the external climate and the indoor environment requirement, the maximization of solar energy utilization is achieved, and a foundation is laid for realizing zero carbonization of the building in the solar energy enrichment area. The invention is realized by the following technical scheme. The invention provides an adjustable heat collection and storage composite wall, which comprises a double-layer sliding window arranged at the upper part of a building south elevation window frame and a turnover phase change heat collection and storage wall arranged at the lower part of the building south elevation window frame; the double-layer sliding window comprises a single-layer glass window on the outer side and a sliding window on the inner side, wherein the sliding window can longitudinally slide along the upper part and the lower part of the window frame; The turnover phase-change heat collection and storage wall comprises a single-layer glass cover plate positioned at the outer side of a window frame, a turnover phase-change heat storage composite shutter wall at the inner side of the window frame and an openable ventilation channel; Under the daytime working condition, the phase change layer of the phase change heat storage composite shutter wall faces outdoors, the shutter units are distributed in a staggered way, and hot air flows indoors and outdoors; Under the cloudy day operation