Performance investigations of cross flow indirect evaporative cooler

Abstract

Dew point evaporative cooler is an indirect evaporative cooling (IEC) technique to lower temperature of incoming air below its wet bulb temperature and near to dew point temperature. The said technique does not involve any change in moisture content of incoming air. Performance parameters of dew point evaporative cooler are significantly influenced by configuration and structural arrangement of heat exchanger. The different arrangements of heat exchangers commonly used are counterflow, cross flow and counter-cross flow. This work presents performance investigations of cross flow indirect evaporative cooler. The cooling efficiencies and temperatures at the outlet of the cooler were investigated for different intake air temperatures and flow rates. Dew point evaporative cooling technique does not make use of compressor and harmful refrigerants hence would be a better option to conserve the environment and helps to reduce the emission of greenhouse gases.