A passive cooling system for water cut-off exterior walls

A water interception and passive technology, applied in the fields of building energy saving, urban heat island, sponge city, and urban drainage, can solve the problems of high construction and maintenance costs of green walls and water curtain walls, and the inability to promote and use them in large areas, so as to avoid urban waterlogging , slow down the urban heat island effect, the effect of simple structure

Active Publication Date: 2019-08-23
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction and maintenance costs of green walls and water curtain walls are too high to be widely used in buildings.

Method used

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  • A passive cooling system for water cut-off exterior walls
  • A passive cooling system for water cut-off exterior walls
  • A passive cooling system for water cut-off exterior walls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 5 As shown, the passive cooling system for water-cutting outer walls of the present invention includes several water-cutting and cooling hanging boards 1 and aqueducts 5. The specific structure is: the water-cutting and cooling hanging boards 1 are arranged on the building outer wall, and The water-cutting and cooling hanging board 1 is composed of a water-absorbing and slow-seepage plate 2 and a water collection box 4. The water-absorbing and slow-seeking board 2 is positioned at the water-cutting and cooling-hanging board 1 front portion, and the water-collecting box 4 is positioned at the water-cutting and cooling-hanging board 1 back. The water in the water collection box 4 penetrates to the outer surface of the water cut-off and cooling hanging plate 1 to form a layer of water film, and the joint of the water collection box 4 and the water-absorbing slow seepage plate 2 is sealed with water-stop sealant, and the water collection box 4 is ...

Embodiment 2

[0034] Such as Figure 1 to Figure 5 As shown, an application example of the passive cooling system for the cut-off outer wall of the present invention is to lay a passive cooling system for the cut-off outer wall on the outer wall of the building. Water cutting and cooling hanging board 1 area is 80cm * 80cm, and total thickness is 6cm. The water intercepting and cooling hanging board 1 is laid on the outer wall of the building, parallel to the wall surface. The aqueduct 5 is arranged on the top of the building exterior wall, and the aqueduct 5 is connected with the roof downpipe 6 and the water inlet pipe 7 of the uppermost water intercepting and cooling hanging plate 1, and the mouth of the downpipe 6 and the mouth of the water inlet pipe 7 are provided with a filter. Net prevents sundries from entering, and rainwater can be imported from top to bottom in the water collection box 4 of each water-cutting and cooling hanging board 1 of the outer wall if the rainfall is suffi...

Embodiment 3

[0037] In another application example of the passive cooling system for the cut-off exterior wall in the exterior wall of a building, in summer, the rainwater falling on the roof is used as the water source, and is introduced into the water collection box 4 of the cut-off and cooling hanging board 1 through the water guide pipe 5, and used The water absorption and capillary action of the water-absorbing slow-seepage plate 2 transports moisture to the surface of the water-cutting and cooling-hanging plate 1 to form a layer of water film. In summer, the latent heat of vaporization taken away by evaporation of water is used to keep the temperature of the wall from being too high, thereby reducing the heat introduced into the room, improving the indoor thermal environment, and reducing the energy consumption of the air conditioner.

[0038] Energy consumption and temperature analysis:

[0039] During the daytime in a southern city, the temperature is 32°C, the wind speed is 6m / s, ...

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PUM

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Abstract

A passive cooling system for an external cutoff wall is provided. The passive cooling system comprises a cutoff cooling hanging plate and a water guiding pipe. During rainfall, rainwater falling to aroof is conveyed into a water collecting box which is mounted at the rear of the cutoff cooling hanging plate through the water guiding pipe; due to the fact that the cutoff cooling hanging plate is made of a slow-infiltration water absorbing material, the rainwater collected in the water collecting box which is mounted at the rear of the cutoff cooling hanging plate can automatically permeate tothe outer surface of the cutoff cooling hanging plate, and a moist water film is formed; in the hot weather, the water film can reduce the temperature of a wall surface and loss of sensible heat due to evaporation and reduce the heat quantity which enters a room through the wall body; the passive cooling system can be applied to various building wall surfaces to regulate the microclimate temperature of the periphery of buildings and reduce the urban heat island effect. In addition, the rainwater interception function of the passive cooling system for the external cutoff wall can reduce the urban ground runoff volume, relieve pressure of an urban drainage system and reduce urban waterlogging.

Description

technical field [0001] The invention relates to the fields of sponge city, urban drainage, building energy saving, urban heat island, etc., and in particular relates to a passive cooling system for water-cutting outer walls. Background technique [0002] With the development of society and the advancement of urbanization, the coverage rate of urban buildings is gradually increasing. The original underlying surface is replaced by traditional building materials with poor heat capacity, asphalt roads and cement pavement, which makes the urban temperature too high in summer. , causing the urban heat island effect, seriously affecting the thermal comfort of urban residents. Coupled with the imperfect energy-saving technology of traditional buildings, a large amount of outdoor heat enters the room, which leads to a large increase in energy consumption of building air conditioners in summer. Some studies in recent years have focused on reducing the temperature of building exterior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B2/88E04B1/74E04C2/52
CPCY02A30/60
Inventor 覃英宏龙相如
Owner GUANGXI UNIV
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