Renewable Energy - Solar Thermal

Solar thermal devices use direct heat from the sun, concentrating it in some manner to produce heat at useful temperatures. These systems use panels, also known as "collectors", which are normally placed onto a roof.

 

They use the sun’s heat to warm water, or another fluid, which passes through the panel. The fluid is then fed to a heat store (e.g. a hot water tank with 2 heat exchangers) and helps provide hot water.

 

It can provide up to 70% of a family’s domestic hot water usage, with more in summer than winter. The panels are usually low profile.

 

There are 2 different types of panels, flat plate and evacuated tube.

 

Flat panels consist of a flat “radiator” absorber, covered by glass and insulated. Their efficiency depends on the insulation properties and type of construction.

 

These systems are now over 86% efficient. Water is passed through an evacuated tube, which contains a black absorber plate. Since these are very efficient, only a small area is required. These are more expensive than the flat plate system.

 

 

 

 

For further information please ring the Sustainable Housing & Affordable Warmth (SHAW) team on 0114 273 5837. You can also email the team on shawteam@sheffield.gov.uk.