‘Grange Hill’ shows way to green energy

school
Coils under the playground of a school in west London provide the energy source for the underfloor in this new extension.
An ave.rage COP over the course of a year is the design target for the ground-source heat pump serving an underfloor heating system in a London School and generating domestic hot water. Some 250 m of pipework buried below the playground at Wormholt school in west London extracts heat from the ground using a water-glycol mixture. The wet underfloor heating system in a new extension of this school, the exterior of which appeared as the exterior of Grange Hill in the BBV television series, is supplied with water at 40°C. Efficient heat transfer in the built-in storage tank of the Eco Diplomat heat pump for the DHW system is achieved by a tap-water stratificator. The tank can hold 180 l of water at 60°C. The advanced scroll compressor is specially designed for heat-pump applications. Diplomat units have a 3-stage electric heating element that can supply heating in 1.3, 3 and 4.5 kW stages for the few days a year when it may be necessary. To cope with the expansion and contraction of the ground caused by the buried heat exchangers, a special porous asphalt to cover the trenches in the playground.
Related links:



modbs tv logo

New Sustainability Director for Wates Group

Wates Group, a family-owned development, building and property maintenance company, has appointed Cressida Curtis as its new Group Sustainability Director.

Domus Ventilation appoints new contractor sales managers

Ventilation systems manufacturer Domus Ventilation has announced the arrival of three new Contractor Sales Managers.