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.
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