Oventrop meets valve requirements for new hospital wing
Oventrop valves have been extensively used for control and system balancing in the new wing of Altnagelvin Area Hospital in Londonderry. R&F Mechanical Services chose over 300 Oventrop TRVs, and Aquastrom T Plus multi-function DHW secondary-circulation regulating valves have also been installed.
The new 3-storey south wing connects to the south face of the main 10-storey tower, and departments will gradually be moved to it as areas become available for occupation.
Heating is mainly by ceiling-mounted radiant panels with TRVs and remote sensors linked by 10 m capillaries to remote thermostat housings in the rooms. Combi 4 lockshield valves are used on the returns.
Some rooms on the south side are under the control of the BMS and interlinked with automatically opening windows.
In some areas, the radiant heating is supported by warm-air systems, using air-handling units, to counteract perimeter heat losses.
To eliminate legionella risks, the Aquastrom valves are used on all DHW supplies. They simplify commissioning and provide significant energy savings by thermostatically controlling temperature and flow in the DHW system. These valves also enable automatic pasteurisation when the water temperature is raised above 70°C.
A central steam source produces LPHW and DHW via a series of heat exchangers. Four roof-mounted chillers provide chilled water for AHUs in the perimeter and high-heat-gain critical areas. All valves, including isolation, strainers, non-return and commissioning sets up to 150 mm diameter were of Oventrop supply and chosen by R&F Mechanical Services in agreement with consulting engineers Arup.