Benefits of adjustable shutters, shading devices and vent windows in passive solar buildings.

Passive solar building are developed to take advantage of the solar heat to reduce the cost of heating. This is obtained by windows with large glass areas in the facade of the building. This idea has some disadvantages. The large window area gives large transmission losses and during warm periods of the year overheating can occur. These disadvantages can be overcome by adding extra window components to the building, like a shutter, shading devices and vent windows. In order to study the capabilities of the building and the various components a computer simulation is developed. This paper shows the results, energy consumption and overheating, of simulations with different buildings and components.