TFS · Hydraulic & Fluid Applications · Problem 19PDFSolution in PDF ↓
TFS · Hydraulic & Fluid Applications · Problem 19
Problem & Solution
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Topic: Pump system — The top of the water line of an open cooling tower basin is located 13 feet above the center line of the associated 50GPM condenser water pump.
Method: The entering condenser water for the tower is 92 degrees.
Key values: 14.7 PSIA, 0.35 psi, 13 feet above the center line of the associated 50GPM condenser water pump
Reference: search psychometric chart and the reference handbook and that will
✅ Answer: C
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Student questions asked in live office hours about this problem
OH 95
Q: When is it really necessary to use the Darcy-Weisbach equation versus friction loss tables, and since tables are conservative, can you eliminate minor losses in most fluids problems?
A: Use Darcy-Weisbach for non-steel pipes or when roughness differs from standard steel, since friction factor depends on Reynolds number and relative roughness. For typical water-in-steel-pipe problems, the friction tables are quicker and appropriate, but you should know both methods rather than relying on one exclusively.