Solved: The capacity of evaporative coolers is usually
Chapter 14, Problem 14116E(choose chapter or problem)
The capacity of evaporative coolers is usually expressed in terms of the flow rate of air in ft3 /min (or cfm), and a practical way of determining the required size of an evaporative cooler for an 8-ft-high house is to multiply the floor area of the house by 4 (by 3 in dry climates and by 5 in humid climates). For example, the capacity of an evaporative cooler for a 30-ft-long, 40-ft-wide house is 1200 3 4 5 4800 cfm. Develop an equivalent rule of thumb for the selection of an evaporative cooler in SI units for 2.4-m-high houses whose floor areas are given in m2 .
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