Ground Source Review: Grade Ruan School, Cornwall October 7, 2014 Grade Ruan School, built by the Victorians, was sympathetically extended to provide additional space for the pupils. The extension to the school was built to current building standards at the time and was highly insulated. The school fitted a “wet” underfloor heating system throughout with plenty of good quality insulation underneath.This along with the high insulation meant it was an ideal application for the use of a ground source heat pump to provide the space heating for the building. Being a school there was plenty of land available for the ground arrays to absorb renewable energy from the ground.Two 70 metre deep closed loop boreholes were drilled within the playground area to provide the heat source and energy for the

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