ABSTRACT
Within the mandate of the European Commission to the European Committee for Standardization (CEN) for the elaboration of a common building energy performance calculation methodology, an important item concerns a simplified method for the calculation of energy use for space heating and cooling.
This work aims at implementing a simplified procedure based on a quasi-steady state model and on a monthly data set. It intends to supply a formulation of dynamic parameters and to adapt them to Italian climatic, typological, constructive and user’s data.
The method is validated through comparison with simulation software Energy Plus. Dynamic simulations run on a CEN test room and on real buildings allowed to determine numerical correlations of the gain/loss utilization factor.
The accuracy of the results is strongly affected by nonlinearities in the determination of heat transfer and dynamic parameters are sensitive to building features which are not duly taken into account by CEN correlations.
