Comfort requirements in indoor climate.

An analysis of the important factors for comfort in indoor climate is given. For the thermal complex, the results from calculations of the energy balance model MEMI are used to quantify the effects of the single meteorological parameters on occupants in indoor climate. The quantifications show that besides the air temperature, the mean radiation temperature and the air velocity, especially at very low levels, are also quite decisive for the occupant's mean skin temperature which is used as a measure for comfort. An essential requirement to achieve thermally comfortable conditions in a room is the consideration of the heat transfer resistance of the occupants' clothing and their activity level. A short review of other comfort factors, such as lighting, noise and air quality is given. Finally, three  international standards for indoor thermal comfort are discussed.