ABSTRACT
This chapter describes the principles and their implementation in dynamic simulation. There are two mechanisms that generate natural ventilation. They are called wind effect and stack effect. Natural ventilation can be enhanced by making the solar absorber and solar energy work almost like an 'engine' of the stack effect. High thermal mass in the building is a prerequisite for the successful operation of natural ventilation. Configuration of buildings will affect the success of natural ventilation through the wind effect. Normally natural ventilation cannot be used in heavily polluted areas without special filters. Mechanical ventilation will use electricity for the operation of fans and will extract some of the useful heat from the building, resulting in increased energy use and increased carbon emissions. The chapter explains simple simulation experiments looking into a reduction of the air-conditioning requirement in a south-facing cellular office in London, New York and Miami.
