Contoured insulation window for evacuated solar collector

摘要

An insulating contoured solar window is provided for use with an enclosed chamber or structure such as an evacuated flat plate solar collector. The solar window is supported about its peripheral portion and in order to withstand the pressures exerted thereon by atmosphere the window may be outwardly domed along its longitudinal and/or transverse extent. Intermediate portions between domes are supported by a lower portion of the structure. A perforated or segmented absorber may be located in the chamber and spaced from the peripheral and intermediate portions in order to prevent heat loss from the absorber to the structure through the window. A pair of such solar windows may be arranged with corresponding peripheral and intermediate supports in opposed supporting contact.