A cooling tower circulates 40,000 gpm water. The hot water entering the top of the tower is 115 degrees F and is cooled to 85 degrees F by the time it enters the cooling tower basin. Assume drift loss is 0.30% of circulation rate, evaporative losses are 1% for each 10-degree F water temperature decrease, and blowdown rate is 0.35% of circulation rate. What is the required makeup in GPM?
A. 1005 gpm
B. 1200 gpm
C. 1425 gpm
D. 1460 gpm
A. Incorrect. The required makeup is 1460 gpm. (40,000(0.01 * 3) + 40,000(.003) + 40,000 (.0035).
B. Incorrect. The required makeup is 1460 gpm. (40,000(0.01*3) + 40,000(.003) + 40,000 (.0035).
C. Incorrect. The required makeup is 1460 gpm. (40,000(0.01*3) + 40,000(.003) + 40,000 (.0035).
D. Correct. The required makeup is 1460 gpm. (40,000(0.01*3) + 40,000(.003) + 40,000 (.0035).
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