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DECC funds development of air-source heat pumps

Frigesco has been awarded £102,000 from the Department of Energy & Climate Change (DECC) to develop flash defrost technology for use in air-source heat pumps (ASHPs).

The latest grant, provided through the DECC’s Energy Entrepreneurs’ Fund, will be used to fund joint research by Frigesco and heat pump specialist Glen Dimplex.

Frigesco managing director David Walter explained: “Coils on ASHPs operating in cool conditions - below 7°C - in humid climates quickly ice up and need to be regularly defrosted to maintain performance and reduce energy use. Existing approaches consume extra power, which can account for a significant component total energy use, reducing their efficiency.

“Frigesco’s system saves all the electrical power normally used for defrost, so applying it to ASHPs should deliver a significant increase in energy efficiency and an associated reduction in grid carbon dioxide emissions. We believe it has great potential.”

The project involves designing and building a flash defrost system that can be built into new ASHP units.

The tests will be repeated and recorded after the unit has been fitted with the Frigesco defrost system, and the effect on annual energy consumption and carbon dioxide emissions established to EN14511:2013 standards.

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