Calculation of the two dimensional airflow in facial regions and nasal cavity using an unstructured finite volume solver.

In this short report we demonstrate the feasibility of using Computational Fluid Dynamics (CFD) for studying the flow in fa.cia.l regions and nasal cavity. A two-dimensional unstructured finite volume flow solver is used. For modelling the turbulence we use a standard k - c: model. 

Subfloor ventilation.

       

NATVENT - European project on overcoming technical barriers to low energy natural ventilation.

This paper describes the objectives and research methodology of a 30-month research project carried out under the European JOULE programme with the involvement of seven countries with cold or temperate climate. The project aims to contribute to reducing energy consumption and consequent C02 emission in buildings by overcoming barriers preventing the wider uptake of technologies for natural ventilation (NV) and low-energy cooling and encouraging and accelerating environmentally-friendly natural ventilation and 'smart' controls as a main design option.

Effects of dry-bulb and humidity design setpoints on theoretical energy used in ventilation.

The purpose of this paper is to present the energy required to condition a constant volumetric airflow and determine the variability of this energy due to changes in the design dry bulb and humidity setpoints. Hourly weather data from a typical year from 32 European locations and long-term data from 11 American locations were analyzed to determine the coincident dry-bulb and dew-point temperatures. These data were then analyzed to determine the heating, cooling and moisture removal energy requirements for a constant mass of airflow per hour.

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