An investigation has been carried out using computational fluid dynamics methods to study the performance of an air curtain at the door of a heated building. A number of operating conditions have been studied and observations are made on the effectiveness of infiltration control and energy use. Comparisons are also made with previously published design data and results from an accepted infiltration analysis. It is shown that the calculation method generates plausible and very detailed results which conform well to physical interpretation.
This paper presents some of the early theoretical work conducted within the framework of a research program aimed at analysing the interaction between gas-fired domestic appliances and the indoor environment in terms of energy consumption, indoor air quality and operational safety. A simplified multizone mathematical model has been developed, which is capable of analysing the thermo-fluid dynamics behaviour of the building + appliance + chimney system.
This paper describes the activity on Air Infiltration and Ventilation of the research group of "Dipartimento di Energetica" in Politecnico of Turin. The group formed in 1988 and only at the beginning of 1990 it began to work on multizone flow analysis. The aim of the group is to set up an apparatus for air infiltration measurement comparable to those of other countries; up to now only measurements using decay technique were made in laboratory in a scale-model which represents a two-zone system.
This, the fifth survey, is based on summaries received from researchers following the distribution of a survey form (Appendix A) to organisations thought likely to be involved in air infiltration and indoor air quality research.
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