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The thermosiphon system is an array consisting of 15 to 20 vacuum tubes and a store of hot water above. The array is secured on a stainless steel frame supporting an insulated cylinder of up to 150 litres and is ideal for both flat and pitched roof installation. This system works on the thermosiphon principle that when the water is heated by the sun inside the evacuated tube, it rises, being replaced by cooler, {more dense} water under the influence of gravity. Therefore no electricity is needed:- all that is required is a water source that is able to fill the tank. making it the most suitable for low impact dwellings. This water source may be from an alberque, tank or mains supply and the desired flow can be achieved either by a natural head, ie gravity fed from above, or by the use of a pressure pump, 12v DC or 220v AC. 20Tube Thermosiphon Unit. Key Benefits
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