Abstract
Field tests were Performed in an office to (1) investigate the desktop task conditioning system (DTC) performance in situations when demand for the local control capabilities may be increased; and (2) compare DTC performance to that of a conventional overhead system under similar high heat load conditions. When the wall thermostat temperature was maintained at 26℃ to 27.5℃, DTC was able to maintain average temperatures in the workstations to be 1 to 2℃ lower than the thermostat temperature. Under increased activity levels, DTC could be adjusted to maintain similar comfort conditions, although each subject had different responses to the same environment.