Objectives

1
Objectives

• Psychometrics
• Psychometrics of AHU

2
AHU
3
Sensible heating
4
Dehumidification by Cooling
5
Real Dehumidification Process
6
Mold in a duct
Transport of saturated air
tsurface lt tdp
Condensation
7
Humidification
hw Specific enthalpy of water added to
system hg Specific enthalpy of saturated water
vapor
8
Evaporative Cooling (air washing)
9
Condition Line for a Space
10
HVAC Systems

• Unlimited number
• You can make your system
• We will study several most common applied in
  practice
• http//www.ce.utexas.edu/prof/Novoselac/classes/AR
  E389H/Handouts.html

11
Heating and Humidification

• Zone any space with a thermostat

12
Cooling
13
Recirculation
14
Reheat
15
Evaporative Cooler