Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Abstract
A 1.5 ton window air conditioner was extensively instrumented and tested over a wide
range of wet- and dry-coil operating conditions. The results were used to improve a steady-state
simulation model. Published air- and refrigerant-side heat transfer correlations were found to
characterize wavy-fin evaporator and louvered-fin condenser performance quite well. Condensate
removal was predicted reasonably well, and 55% of its latent heat was recovered by spraying onto
the condenser. Evaporator and condenser face velocity nonuniformities found to range over a
factor of three. A second set of tests conducted in a wind tunnel, using an identical evaporator,
showed that the heat transfer and air-side pressure drop penalties due to these nonuniformities were
quite small.Air Conditioning and Refrigeration Project 6
