A review of weather data for natural ventilation.

This paper briefly reviews the weather data available for natural ventilation and briefly reviews hourly data for simulation. It starts by reviewing the need for basic data for initial manual calculations. It then discusses the hourly weather data available for example the UK CIBSE Example Weather Years, and the European Community Test Reference Years. These are mostly selected for energy analyses rather than design, but there is still aneed for establishing general criteria for weather data for design of HVAC services and natural ventilation. The paper examines weather data for summer conditions and the need to consider solar radiation as well as outside/inside temperatures and wind speed and direction for natural ventilation. A simulation of a typical building is used to demonstrate the importance of solar radiation.