Thermal Coupling of Leakage Air and Heat Flows in Buildings and in BuildingComponents. Development and Application of Numerical Methods

摘要

Numerical methods have been introduced for the thermal analysis of air leakagesin building components and in buildings as a whole. Numerical methods at the structure level are developed on the basis of physical modelling derived from the balance equations of coupled heat and air transfer in building structures. The study focuses on crack and filtration flows. The numerical formulation of the model equations is based on the finite difference method and the reliability of the two-dimensional numerical methods developed at the structural level have been experimentally confirmed. (Copyright (c) Valtion teknillinen tutkimuskeskus (VTT) 1993.)