Solar heating system for bungalow - has wall and roof areas covered by double glazing which sandwiches retractable insulating curtain

摘要

The vertical walls exposed to the sun are provided with large areas of glass which can be screened during the absence of the sun, by mobile insulation. The roofing also or a part of it is replaced by double-glazing inclined in one or more slopes. Between the two sheets of glass is an insulating curtain which can be drawn across manually or automatically. A vacuum is maintained between the face of the curtain and the neighbouring glass pane.