Eva Discoloration Solar Panels

Solar panel discoloration solar panel blemishes.

Eva discoloration solar panels.

When a low quality eva is used the structure of the eva is altered when exposed to heat and uv radiation. Essentially an acetic acid formation is the problem but not too blame. Identifying early stage discoloration in the ethylene vinyl acetate eva copolymer encapsulants used for crystalline solar module lamination can spot panel degradation before power output is. Discoloration itself may not be directly related to power performance of pv modules.

However discolored eva encapsulant is reported to cause a loss of light transmission to the solar cells leading to loss in power production by up to 0 5 a year by average or up to 1 a year in subtropical climates and this loss can be as high as 10 a year in case of mirror concentrated pv systems in desert conditions. Not my job you had one job. There are two main. Acetic acid and other volatile organic components are also produced from the.

The eva discoloration is caused by the formation of polyconjugated c c sub n sub double bonds of various lengths. Eva browning is defined as a change in color of the eva film. Eva or ethylene vinyl acetate is used as an encapsulant in crystalline silicon pv modules. As a result the eva starts turning to a yellow or brown colour.

First let s talk about what solar panel discoloration is and why it occurs.