=+13-21.

winter months when the air wet bulb temperature is low. If the cooling load on the coils is 250,000 Btu/hr (73 kW) and the warm water temperature is 70 F (21 C), what wet bulb tem-

perature is required to satisfy the coil load?

Consider the cooling tower performance data of Fig. 13-7.

(a) At what condition must the tower