NY-87-12-3 -- Indirect Evaporative Cooler Performance PDF

This paper investigates three sensible air coolers: a single- and a multiple- stage indirect evaporative cooler, and a combination cooling tower/heat exchanger air cooler. Relations and performance characteristics are developed. The single-stage indirect evaporative cooler is capable of cooling inlet air to temperatures approaching the inlet wet-bulb temperature. The multiple-stage indirect evaporative cooler, the heat exchanger/evaporative cooler, and the cooling tower/heat exchanger air coolers are all capable of cooling inlet air to temperatures approaching the inlet dew-point temperature. In the region of air conditioning interest, the coefficients of performance range from 25 for the single-stage indirect evaporative cooler up to 75 for the cooling tower/heat exchanger air cooler.

Units: Dual