Solar energy collector - with sensitive plate in evacuated space between two protective shields and in point contact with them

摘要

An energy-absorbing plate is located between two transparent shields, the space between these being evacuated. The plate is formed with projections so that contact between it and the shields is at points or lines only. For solar energy absorbers with liq. or gaseous heat transfer media. Low heat losses and simple construction are obtd. Specifically the energy collector plate is flat and is formed with channels for the heat transfer fluid. It lies in the evacuated space between two transparent shield which are sepd. by spaces to withstand the external atmos. pressure.