HEAT PUMPS CASE STUDY
The only way they could heat the property cost effectively was to look at getting an even heat distribution from underfloor heating and marrying it with renewable technology
prevent heat loss. With the grand house boasting high ornate ceilings and decorative plasterwork on the inside, and protected decoration and detail on the outside walls, they could not install any insulation apart from in the loft. The property also had to keep the single-glazed sash windows. They decided that the only way to heat
the property cost-effectively was to look at getting an even heat distribution from underfloor heating, and marrying it with renewable technology. The main driving point for Hindhaugh
in choosing renewable technologies was to minimise heating and hot water costs. When the original calculations, based on oil, were carried out (oil was the previous heating fuel method), it was estimated that the house would cost nearly £2,000 per month to maintain at a constant temperature of 21C (based on oils costs of
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about 65p a litre). Hindhaugh called in HT Energy, which
had installed a ground-source heat pump in Hindhaugh’s last building project. Initially a ground-source system was looked at, but it was calculated that the property would need as many as 10 boreholes. As well as the high capital costs involved, this number of boreholes posed siting problems because of the property’s large-scale formal gardens. It was decided that an air-source system
could be installed, and located by the side of an old timber studio that was about to be pulled down and rebuilt. The decision proved to be a good one: the Newton Hall project won the Domestic Air Source Installation of the Year gong in the National Heat Pump Awards 2012. The heating system at Newton Hall comprises four F2015-11kW units, which are controlled by an SMO 10, running in a
August 2012 CIBSE Journal 29
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