High Quality Thermal Environment by Chilled Ceiling in Office Building

SUMMARY An air-condition system shall be designed to provide the required indoor environment under specified condition. According CEN Report 1752 it could be distinguish three categories for indoor environment. Considering higher level of comfort there is a rising cost of HVAC systems. In hereby published research main parameters of thermal comfort and IAQ in offices have been measured such as PMV and PPD indexes, indoor air velocity (w), percentage of turbulence intensity (TU), DR index, and carbon-dioxide concentration. Results are seem to be proved that in order to provide the highest comfort category there is a need of more expensive HVAC systems.