Selective Coatings


a coating applied to an absorber to enhance absorption and transform a large part of the short-wave solar radiation into heat. It also significantly reduces the emission of the long-wave heat radiation from the absorber. The established selective coatings are black chrome and black nickel, produced by galvanic processes, achieve maximum absorptivity rates between 88 and 96 % and emissivity rates around 10 to 15 %.