13.9 Select a coil using the performance information given in Tables 13.4 and 13.5 for a building design load of 20 tons with a sensible heat ratio of 0.75. The design

conditions are entering dry and wet bulb temperatures of 95/75 F and an entering water temperature of 42 F. The zone is to be maintained at 70 F and within the ASHRAE comfort region (relative humidity is less than 60%). Specify the face area, airflow rate (cfm), water flow rate (lb/hr), coil load (tons), pressure drop, and fan power (hp). Draw some conclusions from your results. (Select air speed of 400 fpm)