AN-04-4 Symposium on Topics in Energy Recovery Ventilation AN-04-4- 1 Wheel Selection for Heat and Energy Recovery in Simple HVAC Ventilation Design Problems Yaw Asiedu, Robert W. Besant, and Carey J. Simonson 38 1 AN-04-4-2 Life-Cycle Assessment (LCA) of Air-Handling Units with and without Air-to-Air Energy Exchangers Mikko Nyman and Carey J. Simonson . 399 AN-04-4-3 Measurement of Pore Size Variation and Its Effect on Energy Wheel Performance Wei Shang and Robert W. Besant . 410