Department of the Environment and Climate Change
Department of the Environment and Climate Change Feed in Tariffs
Feed in Tariff
UK Governments Planning Portal
Energy Saving Trust
Energy Saving Trust
Phone: + 44 01942 366289
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SOLAR Hot Water
THERMAL HOT WATER SOLUTION
By heating your water using the sun’s radiation, thermal collectors provide almost all your hot water during the summer and an average of 50-70% annually. The liquid that circulates the panels is heated by the sun, this then passes through a coil in the water tank which in turn heats the water. A twin coil cylinder is required, as one coil receives the heat from the collector on the roof, and the other is used to supply heat from the main heat source when solar energy is insufficient.
Where can they be used?
Although typically used domestically, there are solar thermal systems on the market to cater for any size of building. Ideally they will need to be mounted on a south facing surface, which receives direct sunlight for most of the day.
What are the benefits?
Reduces CO2 emissions on an average domestic system by up to 400kg per year (depending on the fuel being replaced). Easy-to-install and maintain. They can easily be integrated with other heating systems to meet the additional hot water requirements during winter.
Installing solar thermal systems
There are a number of installation options available including surface-mounted options for pitch or flat roofs, A-frames, in-roof and complete roof installation, canopy or facade construction. Aaron Green can advise you on the best solution for your project. Solar thermal systems need to be connected to a twin coil cylinder – which is often bigger than a standard hot water cylinder. One coil receives heat from the solar collector on the roof, while the second receives heat from the other main heat source when there is insufficient sunlight. Aaron Green offer a full range of hot water cylinders and can advise you on the correct size of cylinder for your project. Space should be allowed for these cylinders when planning your project. You will need 2-4 m2 of South-East to South-West facing roof space. The Bpec Solar Hot Water course on the opposite page provides the training required to install both flat plate and evacuated tubes solar systems.
Solar Hot Water