The conditioning plant of a room consists of a fresh air intake, a cooling coil-followed by a mixing chamber for the cooled fresh air and recirculated room air, and a

supply fan as shown in the Figure. The cooling coil handles all fresh air and has a BPF of 0.1. The ratio of fresh air to recirculated air is determined by modulating dampers. The other data is as follows: Inside conditions: DBT 24°C, RH 50% Outside conditions: DBT = 30°C, WBT = 23.3°C Heat gains: RSH = 14.7 kW, RLH = 3 kW Supply air quantity: 191 m/min. Neglecting temperature changes in the fan and duct, find the following: Illustrate the cycle on the psychrometric chart. (ii) DBT and moisture content of supply air. (iii) Mass flow rate of moist air supplied to room. (iv) DBT and moisture content of air leaving cooling coil. (v) Load on the cooling coil. C