Using Evaporative Pad to Cool Down the Air Entering the Condenser to Enhance the Performance of Air – Conditioner Unit

Abstract

The designs used by the commercial air conditioning units are made for climates that are far from the climate in Iraq. Therefore, using these units in the summer decreases the cooling capacity if the units and increases the electrical consumption. This is due to the failure of the unit to spill the hit air out to the condenser which leads to increase the condenser's temperature and eventually causes it to stop working. A simple solution for this issue is to use an evaporative cooling pad at the entry point of air into the condenser. In turn, this leads to moistening the air and decreasing its temperature before it enters the condenser. The proposed solution has been applied to an air conditioning unit, capacity 2 tons refrigeration, used from 7am to 7pm in July 2017. This method has shown that the electrical energy consumption has been reduced by 533 kw-hr / month and 2.43 Amps. instant saving. Additionally, the condensing temperature was decreased from 58 ºC to 49º C.