High-efficiency solar phase-change heat-accumulation heat-collection wall system

Abstract

The invention discloses a high-efficiency solar phase-change heat-accumulation heat-collection wall system, which belongs to the technical field of a heat-accumulation heat-collection building utilizing solar energy. A phase-change material plate is attached to the surface of the wall body of a building in a passage of the solar heat-collection heat-accumulation wall, various vortex generators are arranged at the surface of the phase-change material plate at a certain attack angle of incident flow by an array mode, and vortex is induced to thin and destroy a boundary layer clinging to the wall surface or increase the turbulence intensity so as to reinforce the heat exchange of air at the surface and the phase-change material plate and enhance the heat-accumulation/heat-release rate of the phase-change material, thereby enhancing the efficacy of the solar phase-change heat-accumulation heat-collection wall system. Openings at the top end and the bottom of the passage are respectively communicated with a room of the building and an outdoor space, different operation strategies are respectively adopted in winter and summer, and heat is supplied to an indoor space in winter; and hot air in the passage is exhausted in summer, and the comfort level of the indoor space is enhanced. The solar heat-collection heat-accumulation wall has the characteristics of simple manufacture and convenient installation and has extensive application prospect and popularization value in a solar building.

Description

technical field [0001] The invention belongs to the technical field of heat storage and heat collection buildings using solar energy, in particular to a high-efficiency solar phase change heat storage heat collection wall system. Specifically, the phase-change material plate is attached to the surface of the building wall in the channel of the solar heat-collecting and heat-storage wall (also known as Trombe wall), thereby improving the efficiency of the solar phase-change heat-storage wall system. In winter and summer, different operation strategies are adopted to supply heat to the room in winter; in summer, the hot air in the channel is discharged, and the phase change constant temperature property of the phase change material attenuates temperature fluctuations to improve indoor comfort. Background technique [0002] Energy crisis, global warming, environmental pollution and other issues are important issues facing mankind today. Making full use of natural energy such as...

AI Technical Summary

Problems solved by technology

However, in direct-benefit phase-change energy-storage solar buildings, the phase-change material panels are arranged on the inner surface of the building envelope. Since the surface of the phase-change material panels and the indoor air are in a state of natural convection, the convective heat transfer coefficient is small; Limited by the surface heat transfer coefficient and the small thermal conductivity of phase change materials, it directly affects its application efficiency

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