XTP2000 in Nuuk
 

Western Greenland offers some of the worst conditions in the world for a ventilation valve, making it an ideal place to demonstrate the benefits of the XTP2000.

300 of the valves are in use in the Nature Institute in Greenland’s sub-arctic capital, Nuuk, where temperatures range from about -12°C to 11°C.

The valves were specified by the buildings’ architects, Copenhagen-based KHR A/S.

Valve designer architect Torben Pryning explains the climate problems: “periods of extremely low temperatures are a nightmare for ventilation valves. When the cold outside air meets the warm air inside a building it condenses on every accessible metal part and the spring can either slowly die or suddenly snap. Warmer low pressure periods only make matters worse.

“In addition,” adds Pryning, “because of the harshness of the climate, the valve needs to open and close at both ends. A pipe in the wall that only closes on the inside does not insulate the outside hole, and when the temperatures can remain 10°C below zero for six months, you want all the insulation you can get without closing the outside in such a way as to cause a tight plug”.  

Twickenham application