HVAC · Practice-Exam-2 · Problem 43PDFSolution in PDF ↓
HVAC · Practice-Exam-2 · Problem 43
Problem & Solution
Video Synthesis
Problem: A building has 8 office floors and a basement-chiller plant with 15 feet of vertical spacing per floor.
Key step: The head loss for the piping at the maximum floor rate is 4 feet per 100 feet of pipe.
Watch out: I'm not going to draw the whole building.
Result: And that equals approximately 44 feet.
✅ Answer: B
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Student questions asked in live office hours about this problem
OH 124 · July 6, 2026
Q: Can pressure drops through all air handlers in parallel be added together before applying the pump head equation?
A: No. For parallel piping, you analyze the most demanding run rather than summing every parallel branch; the pump must overcome the losses through the longest or controlling path, including the relevant chiller, piping, air handler, valves, and elevation effects for that run.