Analysis and verification of cooling efficiency for evaporative cooling air conditioning in medium humid areas

Tests and analyses the cooling efficiency of evaporative cooling air conditioning system with different functions in projects by experiments in the medium humid areas in different seasons. The result shows that the maximum of the cooling efficiency for tube type indirect evaporative coolers is over 80% in both transition seasons and summer. When making the same refrigeration output, the energy efficiency ratio (EER) for evaporative cooling air conditioning units is more than three times as higher as that for mechanical refrigeration units. So long as operating reasonably, the energy consumption of the units can be decreased by about 50%.