Eva Discoloration Solar Panels

Browning in the modules happen when certain additives used to prevent browning and enhance uv tolerance start to disappear after losing strength against uv rays.

Eva discoloration solar panels.

We ll get to that. When a low quality eva is used the structure of the eva is altered when exposed to heat and uv radiation. 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.

Solar panel discolouration yellowing and browning occurs when exposed to sunlight in the first few years. Essentially an acetic acid formation is the problem but not too blame. First let s talk about what solar panel discoloration is and why it occurs. Eva or ethylene vinyl acetate is used as an encapsulant in crystalline silicon pv modules.

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. Not my job you had one job. There are two main. As a result the eva starts turning to a yellow or brown colour.

Acetic acid and other volatile organic components are also produced from the.