The results of the FacadeTool are based on a large parameter-based study of a single-zone model using the thermic simulation programme ESP-r. A standard office room with typical internal loads was designed for this purpose. In the simulation, the energy required for heating, cooling, humidifying and dehumidifying for an ideal heating and cooling level is calculated for each combination over the course of a year. This allows the user to assess the potential of natural ventilation without active cooling or heating to meet the international comfort standard ASHRAE-55. The resulting room climate in terms of temperature and humidity can be determined for a typical time period of two months in summer or winter.



In addition to to the annual energy amount for heating, cooling and (de)humidifying, we estimated the expected room climate. Therefore the temperatures below or above a special value as well as the courses of operative room temperatures (without active measurements) could be determined.



A comparison of different facade concepts is possible with regard to the use energy demand and necessary power capacities under ideal room conditions or the estimated room climate without active measurements. Results of facade studies could be represented for any location worldwide and are based on the thermic simulation programme ESP-r.