Thermal performance of buildings. Transmission and ventilation heat transfer coefficients. Calculation method1 Scope This document specifies a method and provides conventions for the calculation of the steadystate transmission and ventilation heat transfer coefficients of whole buildings and parts of buildings. It is applicable both to heat loss (internal temperature higher than external temperature) and to heat gain (internal temperature lower than external temperature). For the purpose of this document, the heated or cooled space is assumed to be at

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BS ISO/IEC 29109-2 is the standard that specifies elements of conformance testing methodology

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