<P> Typical aspen pads used in residential evaporative coolers offer around 85% efficiency while CELdek type of evaporative media offer efficiencies of> 90% depending on air velocity . The CELdek media is more often used in large commercial and industrial installations . </P> <P> As an example, in Las Vegas, Nevada, with a typical summer design day of 42 ° C (108 ° F) DB / 19 ° C (66 ° F) WB or about 8% relative humidity, with 85% efficiency, the leaving air temperature of a residential cooler would be: </P> <Dl> <Dd> T l, d b (\ displaystyle T_ (l, db)) = 42 °--((42 °--19 °) x 85%) = 22.45 ° C (72.41 ° F) </Dd> </Dl> <Dd> T l, d b (\ displaystyle T_ (l, db)) = 42 °--((42 °--19 °) x 85%) = 22.45 ° C (72.41 ° F) </Dd>

Which of the following is an example of evaporative cooling