15.4 Given: Room conditions: 26°C DBT, 19°C WBT Outside conditions: 35°C DBT, 27°C WBT Room heat gains: Sensible heat = 11.1 kW Latent heat = 3.9 kW. The conditioned air supplied to the room is 50 cmm and contains 25 per cent fresh air and 75 per cent recirculated room air. Determine: (a) The DBT and WBT of supply air. (b) The DBT and WBT of mixed fresh and recirculated air before the cooling coil. (c) The apparatus dew point and bypass factor of the coil. (d) The refrigeration load on the cooling coil and the moisture removed by the coil.