Scottish Field

Energy advice from the experts

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Get pumping

Air source and ground source heat pumps are more efficient than other heating systems because the amount of heat they produce is more than the amount of electricit­y they use. While the compressor and pumps need electricit­y to work, they use less than the quantity of heat they move from outside to inside.

Biomass

Biomass is a renewable energy source, generated from burning wood, plants and other organic matter, a stove burns logs or pellets to heat a single room – and may be fitted with a back boiler to provide water heating as well. A boiler burns logs, pellets or chips, connected to a central heating and hot water system. Today’s boilers are hopper fed, programmab­le and light years away from their predecesso­rs

Solar water heating

Energy from the sun warms water for storage in a hot water cylinder or thermal store. Because the amount of available solar energy varies throughout the year a convention­al boiler or immersion heater is normally used in conjunctio­n with them to make up the difference.

Thermal energy store

A thermal store is a way of storing and managing renewable heat until it is needed, most commonly heated water in a buffer or accumulato­r tank. Thermal store may contain one or more heat exchangers and reaches full potential when used with a number of systems like solar and a heat pump

Micro-CHP systems

Domestic micro-CHP systems are usually powered by mains gas or liquefied petroleum gas (LPG) or even biodiesel. They save energy by generating electricit­y while heating water – a boiler cannot do this.

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