Indirect evaporative cooling - an energy efficient way for air conditioning

Abstract

Invention and the widely use of air conditioning has improved people’s working and living conditions. However, it also consumes significant amount of energy, accounting for over 40% of total energy used in the buildings. Indirect evaporative cooling (IEC) is a relatively new kind of air conditioning mechanism developed. It is not only uses less energy comparing with traditional air conditioning, but also overcomes the weaknesses of a direct evaporative cooling (DEC) system. The weaknesses of DEC include humidifying the supply air and minimum temperature of supply air is not lower than wet bulb temperature.