High Quality Thermal Environment by Chilled Ceiling in Office Building

An air-condition system shall be designed to provide the required indoor environment underspecified condition. According CEN Report 1752 it could be distinguish three categories forindoor environment. Considering higher level of comfort there is a rising cost of HVACsystems. In hereby published research main parameters of thermal comfort and IAQ in officeshave been measured such as PMV and PPD indexes, indoor air velocity (w), percentage ofturbulence 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 aneed of more expensive HVAC systems.