ABSTRACT
The method of simulating natural ventilation is somewhat different from that of simulating heating, ventilation and air conditioning (HVAC) components. Natural ventilation is often achieved either using windows or using ventilation fans. Simulation tools can model both the cases and can predict the thermal conditions of indoors. Mixed-mode buildings, which use both natural ventilation when ambient conditions are moderate and HVAC system when it is harsh, can also be modelled by defining the opening of windows and operation of HVAC in the simulation model. This chapter explains the method of modelling naturally ventilated buildings through six tutorials. The tutorials are evaluating the impact of wind speed on natural ventilation, the impact of natural ventilation with constant wind speed and direction, the impact of window opening and closing schedule, the impact of window opening control based on temperature, the impact of window opening area modulation on natural ventilation and the impact of mixed mode operation.
