Residents in 364 homes across seven tower blocks in Sunderland are seeing their gas boilers replaced with heat from ground source heat pumps. There will be a ground source heat pump for each flat which will also be connected to a district heating system consisting of ambient shared ground loop arrays. An underground aquifer will provide the heat source for the tower blocks, accessed via open loop boreholes drilled to depths of 60m. The ambient system prevents heat losses, overcoming overheating in the tower block communal areas, and boosts the system efficiency. The independent heat pumps mean that tenants can shop around for their electricity deal, whilst reducing carbon emissions by an estimated 420 tonnes or nearly 70% per year and improving local air quality. Gentoo Group is delivering the ‘Core 364’ project with the support of Engie and ground source heat pump specialists, Kensa Contracting. Work started in October, with all systems expected to be replaced by late Summer 2020.
Gentoo’s chief executive officer, Nigel Wilson, said: “This heating system will provide heat and hot water at a much reduced cost, using natural heat from the ground.
For more info see the presentati0on made by Kensa to the APSE Energy Summit in October https://www.apse.org.uk/apse/assets/File/Day%202%20-%20Session%205_2%20-%20Matthew%20Black.pdf