in a flat plate, the collector glass must have maximum transmittance and minimum reflection and absorption or minimum radiation and convective losses.
so what glass material should we use on a flat pate collector so that we can get the desired temperature on the absorber surface and what is the desired thickness of the glass?
2. Will the double glass flat plate collector be effective? Which would be more efficient optical efficiency, either double glass and single glass?
In reality there is only window glass for such applications and in fact in the form of finished windows. Normal house windows are already optimized in terms of light transmission with heat insulation at the same time. In order to minimize heat loss, it would make sense to use the modern finished glass packages (triple glazing plus coated glasses). Coated glasses are installed in these windows, which reflect infrared radiation back to your collector (low heat losses due to radiation). In addition, the kripton between glasses prevents convective heat loss.
Vadim Verlotski Sir, in flat plate solar collector which glass is the best suitable single layer, double layer or triple layer glass? Can we use insulated glass which is prevent heat loss from radiation and convection to the top of the cover.
Triple glazing lets in a little less solar radiation, but it insulates better. The data on the percentage of light transmission of the window and its thermal insulation can be found in the data sheet of the window manufacturer. For example:
https://www.ribaproductselector.com/06-5000-5000-neo-composite-window-datasheet/2364/col7064/download.aspx
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