Measurement of heat transfer coefficient is conducted within the laboratory. Testing method is most of the times applicable for doors and windows. The specimen, with thermocouples for temperature measurement and heat flux meters placed on it, is positioned between hot and cold chamber. After achieving steady state condition (at least 2 days time is required) determination of heat transfer coefficient is conduced according to test standard SRSP U.J5.060*
The largest dimensions of the specimen that can be tester are 2700 x 2700 mm.
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*Note: The standard was withdrawn but it is called on by currently active rule book.