HVAC · Practice-Exam-2 · Problem 33
PDF
Solution in PDF ↓
HVAC · Practice-Exam-2 · Problem 33
Problem & Solution
Video Synthesis
Problem: A 4-inch thick composite wall has an R value of 8-hour foot square degree F per BTO.
Key step: So our total equals 1 over HI plus R for the wall, which was given plus 1 over HO the outside film coefficient.
Watch out: Well, there's a couple of different options, and you really have to look carefully at the unit.
Result: And that gives us a total resistance of 9.
✅ Answer: D
Office Hours
0
Student questions asked in live office hours about this problem
No office hours coverage for this problem.