Reports the results of recently completed laboratory and field measurements investigating the thermal performance of an occupant-controlled desktop task conditioning system. The laboratory experiments were performed in a controlled environment chamber configured to resemble a modern office space with modular workstation furniture and partitions. Velocity and temperature distributions were measured for a range of test conditions to investigate the effects of supply volume and direction, supply outlet size and heat load levels (uniform and non-uniform) in the space. The field measurements were performed is a small demonstration office with four occupants in workstations it desk top systems and four without. Presents and discusses the major findings.

KEYWORDS: Measuring, air conditioning, thermal comfort, offices, furniture, controls, site testing, laboratory testing.