A conference room for sitting 100 persons is to be maintained at 22 oC DBT and 60% relative humidity. The outdoor conditions are 40 oC DBT and 27 oC WBT. The various loads in the auditorium are as follows: Sensible and latent heat loads per person 80 W and 50 W respectively: lights and fans, 15000 W; sensible heat gain through glass ceiling etc. 15000 W. The air infiltration is 20 m³/min and fresh air supply is 100 m³/min. Two-third of recirculated room air and one-third of fresh air are mixed before entering the cooling coil. The bypass factor of the coil is 0.1. Determine i) Apparatus dew point, ii) Grand total heat load and iii) Effective room sensible heat factor
