Oventrop valves have helped South Gloucestershire Council to gain an
“Excellent” rating from the internationally-recognised Building
Research Establishment Environmental Assessment Method (BREEAM) for
its new offices in Yate, South Gloucestershire. The new offices are
part of the Council’s strategy to save residents £1.3 millions a
year for 60 years by not having to pay for expensive leased offices.
It also reduces its carbon footprint.
Oventrop valves have been used throughout the project and range from isolation for the DHW, heating and chilled water, through low and medium flow commissioning sets for the fan coil units, to AV6 TRV/Combi 4 lockshield combinations for the radiators. Systems balancing was facilitated with strategically located Oventrop double regulating valves. Fan coil units employ flushing bypass valves. Also in the mix were strainers, check valves, air vents and drain cocks.
The main services plant is located at ground floor and roof levels. Conventional high efficiency condensing gas boilers provide support and standby to the main biomass boiler. Mechanical ventilation and cooling is provided by zoned air handling units having variable speed drives and thermal wheels providing high efficiency heat recovery. Cooling to the main offices is provided by a high efficiency Turbocor chiller, The IT server rooms are provided with a dedicated cooling system having two air cooled chillers with free cooling circuits.
The open-plan offices have perimeter trench heating, whilst radiators are used in stairways and other common areas. Mechanical ventilation and cooling is provided to the open plan areas by means of an all-air upflow system. Smaller offices and meeting rooms are equipped with four-pipe fan coil units
Arup Bristol developed the detailed services design brief for the new 3-storey building with the Council. Kier Western was the main contractor and CMB Cardiff the mechanical engineering contractor. The measures adopted to meet the brief include: an adaptable and flexible mixed mode services solution combining natural ventilation and mechanical ventilation/cooling to provide a low energy solution that has the benefit of allowing cooling in summer and heat recovery in winter; a high efficiency plant with heat recovery and variable speed drives to fans and pumps.
There is a building management system with a comprehensive energy and water metering strategy. Renewable technologies comprise a biomass boiler as the primary source for the space heating systems and solar thermal arrays generating domestic hot water for the restaurant and shower block.