Selective absorption

Selective absorption is a technology used on solar collectors to increase their efficiency in absorbing sunlight. It is a special surface or coating on the absorption surface of the collector that is designed to selectively absorb solar radiation and minimize reflection. This property allows solar collectors to collect and concentrate solar energy more efficiently, which significantly increases their thermal performance.

Selective absorption works on the principle that the surface of the collector has the ability to absorb solar radiation at certain wavelengths and at the same time minimizes the radiation of thermal energy back into the surrounding environment. In this way, heat losses are reduced and the overall efficiency of the solar collector is increased.

As a result, selective absorption allows solar collectors to operate more efficiently at lower temperatures, which is especially beneficial in less sunny and cooler areas. This allows solar collectors to use the sun's energy more efficiently and provides users with higher energy savings and lower heating or water heating costs.

Selective absorption is an important element in the design of solar collectors and contributes to their high efficiency and reliability of solar energy use.