Solar air heat collector with plate cores with arc-shaped openings

Abstract

The invention provides a solar air heat collector with plate cores with arc-shaped openings. The solar air heat collector with the plate cores with the arc-shaped openings is formed by heat collectingplate cores in a heat collecting tank, wherein the heat collecting tank comprises a transparent cover plate, a back surface heat insulation layer, a side surface heat insulation layer, a back plate and a side frame. The heat collecting tank is further provided with an air inlet pipe, an air outlet pipe and a heat collector support. The solar air heat collector with the plate cores with the arc-shaped openings is characterized in that the heat collecting plate cores are provided with the arc-shaped openings in staggered fish scale type arrangement, and a 15 to 20-degree included angle is formed between the upwarping part of each arc-shaped opening and the surface of the corresponding plate core. According to the solar air heat collector with the plate cores with the arc-shaped openings provided by the invention, through the heat collecting plate cores with the arc-shaped openings in fish scale type arrangement, the heat collecting area is not reduced; by placing at the included anglesfacing the sun, the installation inclination angle of the heat collector can be reduced by 15 to 20 degrees, so that the materials used for a support are reduced, and the wind resistance and the mechanical stability of the heat collector are improved. Under the circumstance with the completely same conditions, compared with a commercially available solar non-porous heat collecting plate core, theimprovement rate of the heat gain rate is larger than or equal to 32 percent, the reduction rate of the heat loss is larger than or equal to 35 percent, and the temperature rise on year-on-year basisis larger than or equal to 13 DEG C; and compared with a circular-hole plate core, the improvement rate of the heat gain rate is larger than or equal to 26 percent, the reduction rate of the heat lossis larger than or equal to 25 percent, and the temperature rise on year-on-year basis is larger than or equal to 10 DEG C.

Description

technical field [0001] The invention relates to a solar air heat collector with an arc-shaped opening plate core, in particular to a double-cavity air-distribution solar air heat collector with an arc-shaped opening plate core, which belongs to the technical field of solar heat utilization equipment. Background technique [0002] Commercially available flat-panel solar air heat collectors are composed of a heat collecting plate core, a transparent cover plate, a back insulation layer, a side insulation layer, a back plate, a frame, an air inlet, an air outlet, and a bracket. There are many types of cores for solar air collectors. According to the structure, there are mainly three types: non-porous cores, perforated cores and composite cores. [0003] First, the non-porous plate core, no matter the surface is pressed into a corrugated shape, a wave shape, or various shapes of protrusions, because it can only transfer heat in a single convection, the thermal resistance of the ...

AI Technical Summary

Problems solved by technology

Even if an open core is used, the heated air above the core can only rely on the viscosity. Driven by the rising of the air under the core, the heat energy is taken away, and the fluidity of the air passing through the core is poor.

[0005] Third, commercially available solar air collectors, the air inlet is set at the bottom frame of the collector, if there are more air inlets, it will directly inhale the outdoor cold air, which consumes a lot of energy for heating, requires a dust-proof device, and makes it difficult to utilize waste heat; Setting up a single-port air intake pipe and air outlet pipe will form a large-area air intake and air outlet dead angle, and the heat exchange at the dead angle is not smooth, and external insulation pipes are required between the unit heat collectors

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