A fundamental objective of this report is to investigate the techniques used in the design and research fields for the evaluation of thermal and air flow simulations. The scope is restricted to the whole building rather than flow and heat transfer within individual structural elements (e.g. cavity walls). Considerable developments are taking place in the field of air flow and thermal simulation. Rather than present an in-depth study of these developments, this report concentrates on the rather more general aspects of the combined simulation.
This paper presents the estimation of air infiltration in a building using the COMIS multi-zone model. The applicability of this information in the design of buildings is demonstrated and the effect of air infiltration in the thermal performance of buildings is investigated. An integrated method incorporating both air infiltration estimation and building thermal simulation is proposed.
Swiss topography is dominated by the Alps and the Jura in the north-west part and the most densely populated "Midlands" between the two. The climatic conditions vary in a very wide range both in temperature and solar radiation due to the different altitudes and the different climatic conditions north and sourth of the Alps.Accordingly there are roughly three climatic regions. Meteo data are available as hourly values from over 70 automatic meteo stations. Derived values for hand calcualtion methods are regularly published in Swiss technical journals.
The new units of perceived air quality, the olf and the decipol, are introduced. Research using these units has been used to argue that current recommended ventilation rates are inadequate for comfort. The derivation of theunits is questioned and it is proposed that theirapplication be delayed until the methodology has been fully validated.
Login