Using Cold Water in Evaporative Cooling Systems

Though air movement is a grower's most effective tool in combatting heat stress, his evaporative cooling system (i.e.,fogging, fogging-pad, or pad system) is a close second. Studies have shown that as air temperature climbs above 85oF, the "wind chill" effect produced by air movement decreases. This is not to say that circulation fans and tunnel ventilation are not effective at reducing heat stress when it gets hot, but rather, in order for air movement to have a maximum cooling effect, house te...mperature should be kept below 90oF. By far the most inexpensive method of reducing air temperature is through evaporative cooling.