HVAC · Psychrometrics · Problem 6PDFSolution in PDF ↓
HVAC · Psychrometrics · Problem 6
Problem & Solution
Video Synthesis
Problem: Psychometrics problem 6.
Approach: And if it goes all the way to the wept bulb temperature, which is to say that it becomes saturated, then that point is the poin...
Key formula: equation for the efficiency
Calc: If you're starting at some state 1, the air is being cooled along a line of constant wept bulb.
Calc: So it's moving in this general direction and it'll get to some state 2.
Result: Which is closest to answer choice B.
Office Hours
1
Student questions asked in live office hours about this problem
OH 74: HVAC: Psychometrics Module #6
Q: Are there specific problems in Psych 6 that use the cooling tower approach, and what's the difference between an evaporative cooler and a cooling tower?
A: The key distinction is that evaporative air coolers cool air (efficiency based on air temperature change relative to wet-bulb), while cooling towers cool water (effectiveness based on water temperature change relative to outdoor wet-bulb). Understanding which device you're analyzing determines whether you're calculating air-side or water-side efficiency.