Flat-plate solar collector plate core with whole-face convection function

Abstract

The invention discloses a flat-plate solar collector plate core with a whole-face convection function. The flat-plate solar collector plate core is composed of the following structures of a fluid inlet dry pipe and a fluid outlet dry pipe which are parallel to each other, wherein open grooves are arranged at the adaptive positions of the opposite surfaces of the fluid inlet dry pipe and the fluid outlet dry pipe; a sealed cavity composed of heat collecting plates and lateral seal plates at two ends is arranged between the positions of the open grooves, wherein the heat collecting plates are mutually parallel in an axial direction; a spectral selectivity coating is arranged on the outer surface of at least one side of the two heat collecting plates; and in the sealed cavity, a plurality of S-shaped runners are formed by connecting a plurality of vertical baffle plates and a plurality of horizontal baffle plates according to staggered height. According to the invention, the heat exchange performance of the flat-plate solar collector plate core is effectively improved; the radiation loss of the heat collector plate core is reduced; the flow path of fluid medium is increased; the relative homogeneity of fluid temperature in the heat collector plate core is ensured; the fluid capacity is a low and the warm start speed is fast. Meanwhile, the flat-plate solar collector plate core is simple to process, low in cost and long in service life, and has better economic benefit and social benefit.

Description

technical field [0001] The invention relates to a flat solar heat collecting board core, in particular to a whole convective flat solar heat collecting board core. It belongs to the technical field of solar thermal utilization. Background technique [0002] Energy, environment and sustainable development are the themes of the survival and development of human society in the 21st century. In the field of solar thermal utilization technology, flat-panel solar energy has the advantages of long service life, pressure-bearing operation, no system failure, and easy building integration, so it is favored by more and more construction engineers. The research on flat-panel solar energy focuses on four aspects: selective coating process, enhanced heat transfer of heat collector plate core, performance improvement of light-transmitting material and heat preservation. [0003] The flat-panel solar panel cores on the international and domestic markets basically adopt the form of weldin...

AI Technical Summary

Problems solved by technology

The studies of Avraham I. Kudish and A. Alvarez have their own advantages and limitations. Avraham I. Kudish’s design process is partial; The heat transfer temperature difference is large, while the heat transfer temperature difference at the end is small

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