Solar collector adsorber (definition)

Solar collector adsorber — is the main element of a solar collector that absorbs (adsorbs) solar energy and transmits it coolant, circulating inside the collector. The adsorber usually consists of metal plates or tubes coated with a special selective coating that effectively captures solar radiation and minimizes heat loss.

Solar collector adsorber: main functions

• Absorption of solar energy: The adsorber captures solar radiation and converts it into thermal energy, heating the coolant.
• Heat transfer: The heated adsorber transfers heat to the coolant circulating in the system, which is then transported to the hot water supply or heating system.
• Design: The adsorber is usually made of copper or aluminum, as these materials have high thermal conductivity. The adsorber plates or tubes have a black or selective coating to maximize solar energy absorption and reduce heat loss.
• Types of adsorbers: Depending on the design of the solar collectors, the adsorbers can be flat (used in flat plate solar collectors) or tubular (used in evacuated tube collectors).
• Efficiency: The efficiency of the adsorber depends on the quality of its coating, the material it is made of, and the operating conditions. The higher the efficiency of the adsorber, the more heat can be collected and transferred to the heating or hot water supply system.

The adsorber is a key element of solar collectors and plays an important role in ensuring the energy efficiency of the entire system.