Flat solar air heat exchanger

Abstract

The invention discloses a flat solar air heat exchanger. The flat solar air heat exchanger comprises a shell, a transparent cover plate arranged on the upper part of the shell, a solar heat absorption plate and a heat exchange plate which are arranged in a closed space sequentially between the transparent cover plate and the shell, a cold air inlet tube which is arranged in the closed space between the transparent cover plate and the shell and positioned at one end of the heat exchange plate, and a hot air outlet tube which is arranged in the closed space between the transparent cover plate and the shell and positioned at the other end of the heat exchange plate, wherein a plurality of heat exchange units are arranged on the heat exchange plate; each heat exchange unit consists of a plurality of heat exchange fins which are arranged on the heat exchange plate at intervals; an air flow channel is formed between two adjacent heat exchange fins; in a direction of air flow, one air flow channel of the former heat exchange unit of the two adjacent heat exchange units is communicated with two air flow channels of later heat exchange unit of the two adjacent heat exchange units, so heat transmission media can be subjected to pressure and flow distribution for many times; furthermore, the heat transmission media are distributed uniformly, so full heat exchange between the heat transmission media and the solar heat absorption plate can be realized and the heat transmission efficiency is high.

Description

technical field [0001] The invention relates to a solar heat collector, more specifically, to a flat-plate solar air heat exchanger. Background technique [0002] The flat panel solar collector is mainly composed of a heat-absorbing plate core, a solar selective absorption coating coated on the upper surface of the heat-absorbing plate core, a pipe welded to the heat-absorbing plate core, a transparent cover plate, a thermal insulation layer and The outer casing is composed of a header pipe welded at both ends of the row pipe. The heat transfer medium is distributed from the header pipe at one end of the row pipe, and then flows into each row pipe to exchange heat with the heat-absorbing plate core, and then flows from the other end of the row pipe. One header flows out, because the heat transfer medium can only be distributed once, resulting in uneven distribution of the heat transfer medium, and cannot fully exchange heat with the heat-absorbing plate core, resulting in a ...

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Problems solved by technology

[0002] The flat panel solar collector is mainly composed of a heat-absorbing plate core, a solar selective absorption coating coated on the upper surface of the heat-absorbing plate core, a pipe welded with the heat-absorbing plate core, a transparent cover plate, a thermal insulation layer and The outer casing is composed of a header pipe welded at both ends of the row pipe. The heat transfer medium is distributed from the header pipe at one end of the row pipe, and then flows into each row pipe to exchange heat with the heat-absorbing plate core, and then flows from the other end of the row pipe. One header flows out, because the heat transfer medium can only be distributed once, resulting in uneven distribution of the heat transfer medium, and cannot fully exchange heat with the heat-absorbing plate core, resulting in a large loss of heat energy, large heat loss, and the heat conduction of the heat-absorbing plate core low efficiency

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