1. Objectives Plot processes in AHU and buildings on psychrometric chart
Use protractor to calculate SHR

2. AHU

3. Sensible heating

4. Dehumidification by Cooling

5. Real Dehumidification Process

6. Humidification hw Specific enthalpy of water added to system
hg Specific enthalpy of saturated water vapor

7. Evaporative Cooling (air washing)

8. Condition Line for a Space

9. HVAC Systems Unlimited number
You can make your system
We will study several most common applied in practice

10. Single-Zone Systems
Zone – any space with a thermostat

11. Air conditioning

12. Recirculation

13. Reheat

14. Evaporative Cooler

15. Air-to-air heat exchanger

19. Summary Show HVAC processes on a psychrometric chart
Draw condition lines
Define sensible heat ratio
Draw HVAC processes for real buildings
Single zone
Multiple zone
Skipping Chapter 9