HVAC · Practice-Exam-1 · Problem 68PDFSolution in PDF ↓
HVAC · Practice-Exam-1 · Problem 68
Problem & Solution
Video Synthesis
Problem: A 75% effective enthalpy wheel supplies 2000 CFM of tempered air by recovering energy from a return air stream at 74 degrees and 50% relative humidity...
Key step: The entering outside air is 96 degrees dribel 76 degrees wepple.
Watch out: So as we're going to see we can actually apply this effectiveness 75% effectiveness and go straight after the dribel temperature we don't have to get ...
Result: All three of these relationships are equal to the effectiveness 75%.
✅ Answer: B
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