Student questions asked in live office hours about this problem
OH 18: HVAC: HVAC-25
Q: For HVAC-25 (sensible heat demand), can you explain the states 1 and 2 in Q = 1.08 × CFM × ΔT — is ΔT the difference between supply and room temperature, and is CFM the supply flow rate?
A: Yes — ΔT is room temperature minus supply temperature, and CFM is the supply volumetric flow rate. There's no information given about exhaust or room pressurization, so assume supply flow equals return flow for this problem.