The effects of building configuration on natural ventilation coefficients.

Natural ventilation coefficient curves were generated using the NatVent 2.0 software, for naturally ventilated livestock building models with a total of 60 design variations including 5 building lengths, 2 sidewall opening heights, 3 ridge opening types, and the presence or absence of end wall openings. An average natural ventilation coefficient curve versus wind angle is also presented. As well, a general design natural ventilation coefficient has been developed and could be used without introducing major errors. A new concept for a wind induced natural ventilation model is introduced in order to size adequately the necessary sidewall, roof and end wall openings with local weather data.