Abstract:
In present, air conditioning business is highly competitive. A measure of air conditioning quality is
energy efficiency ratio, indicating the efficiency of the air conditioner in cooling. This research focuses on
the development of evaporator capacity with the use of a louver fin. The parameters used in the
experimental study are fin density in evaporator coil and air flow rate. In the experiments, the fin spacing
used are 2.117, 1.814, and 1.588 mm, and air flow rate are varied from 700 to 1170 cfm. The study
shows effect of these two variables on the heat transfer coefficient in the form of the Colburn j-factor,
coefficient of friction in evaporator coil and the energy efficiency ratio of air conditioner. The experimental
results show that if fin density is increased, the heat transfer is also enhanced. However, this results in
higher pressure drop. And increase of air flow rate on evaporator coil yields higher heat transfer, but the
compressor power input is increased as well and the Colburn j-factor is reduced. Moreover, when air flow
rate is 990 cfm and fin spacing is 1.814 mm, the energy efficiency ratio of air conditioning is maximum,
13.23.