Solar energy collector for domestic heating - receives additional heat from air circulated through space behind it

摘要

A solar radiation energy collector is mounted on the roof of a house to be heated. Water is circulated through it by a pump and returns to a thermal store from which it serves the house heating system. The collector is mounted with a gap between its underside and the roof. Atmosphere air can be drawn into this gap through a damper at the lower end and is pulled through the gap and discharged by a fan connected to the upper end of the gap. Extract ventilation air from the house can also be passed through the gap by a second fan. This provides additional sources of free heat to supplement the solar energy according to weather conditions.