South Lanarkshire Council choose Renewable Heat for new school
When Morrison Construction were awarded the contract to build a new school for South Lanarkshire Council, Ecoliving were selected as the specialist sub-contractor to deliver a renewable heating system connected to underfloor heating – specifically a ground source heating system – as part of the project.
With this in mind, a single 60kW ground-source unit was specified to meet peak demand of 55kW using a series of boreholes. However, on drilling the first borehole an artesian aquifer was found – an underground, pressurised body of water – which caused water to force itself upwards and outwards at a fast rate, occupying the immediate area. After remedial works took place to seal the aquifer and drain the land, an alternative air source system was proposed, designed and accepted – able to provide all heating and hot water requirements totaling 52,003kWh. This change was easily absorbed by the overall planning of the project as both heat sources require very similar plant rooms and the chosen distribution system was unchanged.
Two 45kW Mitsubishi CAHV P500YA HPB units have now been installed successfully on to a concrete plinth, outside the new school. These units source their heat from the ambient air and through a refrigeration process are able to produce enough heat for all heating and hot water requirements for the building. Additionally, the installation is eligible for the Renewable Heat Incentive (RHI), expected to receive in the region of £1,315.00 pa. When comparing with conventional alternatives to supply the heating and hot water, the chosen ASHP system will save roughly £1,404.00 pa in fuel costs making a total net benefit over the duration on the RHI period somewhere in the region of £54,350.00.