Creating a heating network
As part of the masterplan, a new district heating network serves 20 of the new buildings being constructed. Consisting of a single energy centre, located within building E03, the buildings will be linked to a district heating network of approximately 3.5km in length.
Ramboll’s designs to service the development through an innovative single energy centre, rather than the originally planned two separate systems, saved Quintain considerable capital expenditure, will reduce maintenance costs and reduce CO2 emissions to around 35% below building regulations which is a great outcome.
A low temperature hot water (LTHW) network
The energy centre essentially links to a modern low temperature hot water network (LTHW) where a two-stage system improves efficiencies by using water returned from the radiator circuit to pre-heat domestic hot water.
The system is thermally led, with combined heat and power (CHP) engines as the lead energy source, thermal stores as primary support and gas boilers as back-up. The CHP plant produces both heat, which is fed into the district heating network, and electricity, which is fed back directly into the electricity grid. The CHP system contributes to 80% of the overall heat network, exceeding the 75% stipulated in the planning applications. The highly efficient system is helping to deliver the desired carbon savings by providing cleaner and greener energy to the significant development.