AHU=500kw, AHU CMH=100,000cmh, AHU off-coil= 15 degrees dry bulb, 14.5 wet bulb, Chilled water in=8 degrees, chilled water out= 15 degrees, chilled water flowrate=17.01L/s, Sensible Heat Load=300kw, Latent Heat Load=14.8kw, Room design temperature=23 degrees Celsius, 60% RH. Room is cooled by PAHU of 4000cmh, off-coil= 18 degrees dry bulb & 18 degrees wet bulb. Outdoor temperature=32 degrees wet bulb, 26 degrees dry bulb

1) What is the on-coil temperature of AHU? Use psychometric and calculation to explain.