Description: GSHP with horizontal loops for new and existing building with radiators and UFH. Including passive cooling in summer.
Client brief: When considering what form of heating to use for the planned new extension to Auckley School it was decided that a GSHP was the preferred option. After consulting with JKN the school decided to replace the whole heating system with something new and more efficient. JKN were tasked with providing a new GSHP system to meet the whole school’s heating and hot water demand and also to provide some passive cooling in the summer to keep classrooms more comfortable.
Solution: Replacement of gas fired boiler system with 2 x 40kW NIBE GSHPs for the existing building and new extension. Under floor heating with pipes at 100mm centres in the extension area. Passive summer cooling via fan-coils in existing classrooms and UFH in new part. Hot water via 750 litre thermal store. 10 x 250m loops of 40mm PE100RC (crack resistant) pipe connected to a pre-formed manifold chamber for the ground collector.
Main challenge: Deciding on the best way to provide the passive cooling was a challenge and involved detailed discussions with the manufacturer as this was the first school project with heating and cooling that they had come across. The switch-over to the new system had to be seamless as there was only the half term holiday to do it in and this target was achieved with the help of a marathon shift from JKN’s top installers.