Performance and quality of flat solar collector
In order to improve the performance and quality of flat solar collectors, it is necessary to improve its thermal performance, improve its durability and reliability, and even improve its appearance quality. The main ways to improve the performance and quality of products are summarized as follows:
1, pay attention to the optimization design of flat solar collector heat absorption plate, taking into account the material, thickness, diameter. The influence of the distance between tubes and the connection mode of tube and plate on the thermal performance is studied to improve the thermal efficiency of the heat absorbing plate;
2 improve and improve the processing technology of the heat absorbing plate, reduce the thermal resistance between the tube and the plate or between different materials
In order to improve the collector efficiency factor, the degree of neglect is considered;
3 research and development of selective absorption coatings for flat solar collectors, with high solar absorptance, low emissivity and strong weather resistance, will minimize the radiation heat transfer loss of the heat sink;
4, pay attention to the optimization design of the distance between the transparent cover plate and the heat absorbing plate, and ensure the strict processing of the panel processing and assembly of the flat solar collector, so as to minimize the convective heat transfer loss of the air in the collector;
5, the heat preservation layer with low thermal conductivity is used as the insulation layer of the bottom and side of the flat solar collector to ensure sufficient thickness, and the heat transfer loss of the flat solar collector is reduced to a minimum;
6 cover the glass with high solar transmittance. Specializing in the production of iron plate glass for solar collector;
7 research and develop the antireflection coating of flat solar collector to increase the solar transmittance of transparent panel as much as possible;
8 for use in the cold area of flat plate solar collector, is generally recommended by double transparent cover or transparent honeycomb insulation materials, as far as possible convection and radiation suppression between the transparent cover plate and the absorber plate heat loss.
9, to improve the processing quality of flat solar energy absorption plate, to ensure that the collector can withstand pressure, stuffy sun, water, heat shocks and other tests of the test;
10 flat plate solar collector components material quality, processing quality and assembly quality, ensure that may be subjected to rain, air drying, strength, stiffness, water thermal shock tests of flat plate solar collector test;
11, the company selected toughened glass as a transparent cover plate, to ensure that the collector may withstand hail (and impact) test;
12 select high quality materials and processes for heat absorbing panels, coatings, transparent panels, insulation, housings and other components to ensure that the flat solar collector has the appearance of the consumer.