INDOOR CLIMATE

In industrialized countries most of the time is spent indoors. The bas ic ambient parameters for a thermally comfortable indoor climate are a ir temperature, air velocity, humidity and radiation pattern. Besides the thermal component, the concentrations of air pollutants in the ind oor air are also of importance for wellbeing and health. Their levels are influenced both by the outdoor concentrations and the indoor emiss ions. The increasing use of air conditioning systems in many cases has not resulted in improving the indoor climate but causes a wide range of irritations and health problems summarized as 'sick building syndro me'.