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Renewable Energy Heat Pumps sales growth
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The fact is that there is a much better way to generate local heat: heat pumps. These are back to front refrigerators. Powered by electricity, they pump heat into the building from the outside - either from the air or from the ground.
The best heat pumps, recently developed in Japan, have a coefficient of performance of 4.9. This means that using 1Kwh of electricity, the pump delivers 4.9 Kwh of heat in the form of hot air or hot water.
This is a far more efficient way to use high-grade energy for heating than simply setting fire to high-grade chemicals, which achieves a coefficient of performance of only 0.9.
Recent trials of heat pumps in Germany have confirmed that ground-source and air-source heat pumps can deliver hot air and hot water with an average coefficient of performance of 3.0.
Submitted by H Crawshaw on Wednesday 1st July 2009