Modelling of Thermal Comfort Conditions in Buildings

The purpose of HVAC appliances is to provide a comfortable environment and set the conditions for efficient work. The enhancement of buildings' energy performance puts emphasis on meeting the comfort requirements indoors, as the acceptable environments have to be provided from less energy. The comfort of the occupant is determined by the heat exchange between his body and his indoor environment. The heat exchange mainly depends on the temperature of the surrounding surfaces and the air temperature as well as on the velocity of the air movement. The paper contains three distinct researches: investigation of combined effect local discomfort parameters through human subject experiments, CFD modelling of air movement around a human body and CFD modelling of possible discomfort caused by natural ventilation required for air supply of gas appliances.