Solar power booster for domestic heating - has fresh air heated by combination of heat in exhaust air and solar energy

摘要

The building has a sun trap (1) built onto the south side. This can be arranged to form an additional room such as a conservatory. Vitiated air extracted (6) from other rooms passes through a header (8) to a heat exchanger (5) from which it is exhausted (10) to atmosphere. There is a bypass (11) round the heat exchanger to control the heat transfer. Fresh air (15) is drawn through the heat exchanger (5) to a valve box (18). From the valve box it can be delivered either directly (29) to the rooms or through the conservatory (20,21) in which it gains further heat from the solar energy trapped by the glass walls.