Tour & Andersson has supplied 1,841 valves, including over 1,000 differential pressure and flow control combination valves, to Heathrow’s new Terminal T5A (large terminal, TTS and rail station). The system delivers energy efficiency and an optimum indoor climate control at Terminal 5 to time and on budget.

Terminal 5 is the largest free standing building in the UK and the construction work began in 2002. Energy efficiency was of prime concern for the airport operator, BAA, given the size and high profile nature of the Terminal 5 site. Water is taken from a district cooling scheme, supplied by a central chiller farm, to serve all buildings across the 260ha site at Heathrow. As a result of this set up there was the risk of intermittent pressure throughout the buildings on the site – creating uncomfortable indoor climate and unnecessary noise.

The risk of intermittent pressure throughout the buildings on the site posed a challenge for the two-port control valves and the balancing of the system. TA’s technical expertise quickly found an alternative solution: KTM and DKH combination valves that provide greater flexibility, control and cost savings for any variable flow system. TA also pre-calibrated to design flows all the PICV combination valves before delivery to site, and delivered them to the Terminal 5 storage area according to the schedule for onsite installation.

“Thanks to TA’s technical andengineering expertise andability to provide a robust supply of valves, the system delivers energy efficiency andan optimum indoorclimate at Terminal 5”

David Snow, Design Manager, Spie Matthew Hall.

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