HVAC · Practice-Exam-2 · Problem 14PDFSolution in PDF ↓
HVAC · Practice-Exam-2 · Problem 14
Problem & Solution
Video Synthesis
Problem: An unoccupied space has 10kW of computer equipment and lighting and a moisture load of 12 pounds per hour of water vapor What is the sensible heat rat...
Approach: So if we go into the reference handbook and search sensible heat ratio We'll find the equation we need which is SHR equals the sensible heat gain and ...
Watch out: We we're always exhaling or Sweating or right so this moisture it's not just sensible heat, then needs to be removed when you have humans But fortunat...
Result: We're saying that the latent heat load is the product of the mass flow rate Which we know and delta H or in this case HFG the latent heat of vaporizat...
✅ Answer: C
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Student questions asked in live office hours about this problem
OH 121 · May 25, 2026
Q: When calculating heating degree days, if the average outside temperature is 45°F and the baseline is 65°F, does the 20°F difference count as 1 degree day or 20 degree days for that single day?
A: The 20°F difference counts as 20 degree days for that single day — degree days are the product of the delta T and the number of days elapsed. For example, if the average outside temperature for the entire month of May is 68°F and the baseline is 70°F, that yields 31 days × 2°F = 62 heating degree days for the month.