Passive solar heating

Passive solar heating can contribute significantly to heating requirements, particularly when a building is designed with this in mind, although the economics require careful assessment.

Passive solar heating contributes to space heating requirements in a relatively small number of buildings in the UK. As a general principle, passive solar energy should be exploited wherever possible. It should be available to every house and make a contribution to heating needs in schools and other buildings as

long as conflicts with overheating do not exist. For many buildings solar ingress has the additional appeal of excellent light quality and the connection to outdoor spaces.

In general, commercial and school buildings need to exploit solar heat in the winter but provide external shading in summer. This is due to improvements in fabric, which make overheating a major consideration. A major source of cooling demand in leaky 1980s offices is the unwanted ingress of external warm air.

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