Solar energy is the cleanest and most inexhaustible of all known energy sources. Solar radiation is the heat, light and other radiant energy that is emitted from the sun. The sun's energy, although plentiful, has been hard to directly harness until recently.
Solar water heater converts solar energy into thermal energy, then heat the water step by step. The beauty of this system is it does not create pollution or harmful emissions, and is extremely economical - the fuel (sunshine) is free! Plus, they are environmentally friendly. To take full advantage of these heaters, you should ideally have an unshaded, south-facing location (a roof, for example) on your property, although they can be utilised at ground level also. This type of Solar water heater is now extremely popular in many areas of the world, are are now becoming much more popular in the UK, due to their high efficiency.
Until now, solar panels were not particularly popular in the UK due to their low efficiencies during the spring, autumn and winter months. Classic solar panels (flat plate collectors) work equally well as radiators - and therefore unless ambient temperature is high, heat losses are considerable. Flat plate collectors, despite their poor performance at UK lattitudes, have remained the panel of choice until now, due to their low cost, and DIY-suitability. However, we are now able to offer much higher efficiency vacuum tube collectors at similar prices to flat plate collectors.
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