Dynamic balancing of Heathrow Terminal 4 heating and cooling systems relies on Oventrop valves

(07/12/2009)

The existing departures concourse at Heathrow's Terminal 4 has been extended outwards by 25 metres for its full 400 metre length. Coordination and dynamic balancing of the modified heating and cooling systems relies on Oventrop valves.

A wide selection of Oventrop valves were chosen by Bailey Building Services, the project's M&E services contractor, including Oventrop Hydromat differential pressure regulating valves which were selected to control not only the flows but also the differential pressures throughout the various circuits of the heating/cooling system. These are easy to design into a system, easy to install, simple to commission and are economical both in terms of initial cost and running costs as they require no auxiliary power source and no increase in pump head to work effectively.

The aim of the upgrade is to increase the amount of natural light entering the building, improve check-in facilities and refurbish extensive areas of the terminal. Opened originally in 1986, the building has two tiers and a mezzanine. Arrivals are at ground floor level and departures on the upper floor. New baggage lines have also been installed.

Medium temperature hot water services from the existing plant room have been extended by Bailey to the design by Morgan Professional Services (MPS), the Stratford upon Avon based consulting engineers, who also carried out the overall project M&E services design.

Ten new air handling units have been installed on the roof and a link into the existing cooling system that has been complemented by three more cooling towers to boost the chiller facilities. Trench heaters are used at the front of the building and there are a small number of radiators on the mezzanine stairways and offices on that level.

All the valves that control heating and chilled services to the AHUs, the trench heaters and the radiators are of Oventrop supply.

Related categories:  Air conditioning - commercial and industrial   Air handling   Commercial and offices applications   Radiators: panel, convector, towel rails   Valves