A 120 tons refrigeration system with COP of 5 has a condenser which is to be cooled by means of a cooling
tower. Air enters the tower at 25 oC db and 50% RH and leaves at 35 oC db and 80% RH. Find the volume of
air needed m3
/hr. At 25oC and 50% RH: h = 50 KJ/kg, v = 0.86 m3
/kg At 350C db and 80% RH: h = 108A.
7.51 m3
/s B. 2.34 m3
/s C. 4.98 m3
/s D. 3.16 m3
/s