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Solar Water Heating

How does solar water heating work?

Solar panels called collectors are fitted to your roof. These collect heat from the sun and use it to warm water which is stored in a hot water cylinder.

The two types of panels available are:

• Evacuated tube collectors have evacuated tubes each with a liquid filled copper conductor inside. As the liquid heats up it rises to the top of the tube where the heat is transferred in a manifold to the water from the manifold to the water from the cylinder.
• Flat plate collectors where the water passes through the whole plate where it is heated before returning to the cylinder.  These can be fixed on the roof tiles or integrated into the roof

As a back-up a boiler or immersion heater can be used, if the temperature set by the cylinders thermostat cannot be reached by the solar water heating system alone (cylinder thermostat should be set at 60 ⁰c).

Benefits of solar water heating

• Hot water all year, although in the winter months a boiler or immersion heater may be needed to heat the water further
• As sunlight is free, the only cost is for the initial installation , your hot water costs will be greatly reduced
• Carbon dioxide emissions are reduced as solar hot water is a green, renewable heating system. 

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