the cooling capacity of the
air-conditioner with and without ultrasonic
generator at the evaporator. Since the ultrasonic
wave increases turbulence in the refrigerant flow
and moreover, less accumulation of condensed
water at the evaporator coil could be achieved
then the heat transfer at the component is higher
than the normal unit. Therefore, the ultrasonic
wave could improve the cooling capacity of the
air-conditioner. From the experiments, 1 unit
and 2 units of ultrasonic generators could
increase the cooling capacity at around 10% and
15% compared with the normal air-conditioner,
respectively.