Flat panel solar collector performance and quality
In order to improve the performance and quality of flat-panel solar collector products, it is necessary to improve its thermal performance, but also to improve its durability, reliability, and even improve its appearance and quality. Now the main ways to improve product performance and quality are summarized as follows:
1 emphasis on flat-panel solar collector heat sink optimization design, considering the material, thickness, diameter. Pipe spacing, pipe and board connections and other factors on the thermal performance, in order to improve the thermal efficiency of heat-absorbing plate;
2 improve and improve the heat-absorbing plate processing technology, the tube and the board or between the different materials to reduce the thermal resistance can be
To ignore the extent to improve the collector efficiency factor;
3 research and development for flat-panel solar collectors selective absorption coating, to have a high solar absorption ratio, low emissivity, strong weatherability, the radiation heat absorption plate heat loss to a minimum;
4 emphasis on the optimal design of the distance between the transparent cover plate and the heat-absorbing plate to ensure that the flat plate solar collector frame processing and assembly of tight pieces of the collector air convection heat loss to a minimum;
5 Use low thermal conductivity of the road material as a flat panel solar collector bottom and side of the insulation layer to ensure a sufficient thickness of the flat-panel solar collector heat conduction losses to a minimum;
6 use high solar transmittance glass cover. Specializing in the production of low-iron flat glass for solar collectors;
7 research and development for flat-panel solar collector anti-reflective coating, as far as possible to improve the transparent cover of the solar transmittance;
8 For flat-panel solar collectors used in cold areas, it is generally recommended to use double-layer transparent cover or transparent honeycomb insulation to minimize the convection and radiation heat loss between the transparent cover plate and the heat-absorbing plate.
9 to improve the quality of plate solar thermal plate processing, to ensure that the collector can withstand pressure, stuffy sun, water heat shock and other tests of the various tests;
10 Improve the material quality, processing quality and assembly quality of flat-panel solar collector components to ensure that flat-panel solar collectors may withstand the test of various tests such as rain, emptying, strength, rigidity,
11 Companies choose toughened glass as a transparent cover, to ensure that the collector may withstand hail (and impact) test;
12 Choose high-quality materials and processes for heat-absorbing panels, coatings, transparent cover, insulation layer, shell and other components to ensure that flat-panel solar collectors have the appearance of consumers.