FME 706/FML 2007- 08Air Conditioning14 SOME IMPORTANT PSYCHROMETRIC PROCESSES (contd 9) h w = h gT1 – humidification at constant T 1 (2) h w > h gT1 – heating with humidification (2) h w < h gT1 - cooling with humidification (2) Spray with liquid water at air wet bulb temperature – T wb remains constant.