A range of calculation techniques is available for the calculation of air infiltration and ventilation in buildings. The choice is largely dependent on intended application, while the level of complexity ranges from straightforward empirical techniques to detailed multi-zone numerical methods. The objective of this article is to outline some of the techniques currently available and to indicate the purposes for which they are most suited.
The purpose of this paper is to show how the heating and ventilating plant of a lease building was designed. An optimal design was achieved by utilizing the building's thermal inertia for both winter and summer operations.
A new European norm for measuring the heat transfer rate of radiators is under discussion [ CEN TC 130 ]. This testing can be done either in a closed chamber with cooled walls or in a open chamber with a controlled air supply. The air flow pattern around a typical radiator is calculated for both types of chambers. The calculation is done with the program PHOENICS, a finite volume program that solves the conservation equations for mass, momentum and energy. For turbulence, the k-E model is used with the Lam-Bremhorst correction for low Reynolds numbers.
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