This question posted before also but I get wrong please don't do 25.o . The air in a room is to be maintained at 19C and 54% R.H. by air supplied at a temperature of 14C. Induced the same design out-door conditions are as follows, Sensible heat gain: 200000 kJ/hr, Latent heat gain: 40100 kJ/hr, Out-door conditions 39C DBT and 42% R.H. The ratio of recirculated air to fresh air is fixed at 2.9:1 by weight. The plant consists of direct expansion cooling coil and after-heater and a constant speed fan. Calculate, (a) The quantity of air supplied per minute in cubic meters (b) The load on refrigerating plant in tons of refrigeration assuming the bypass factor of the cooling coil 0.115 (c) The load on after-heater in km.