Acooling coil with a cross sectional area of 20 ft is employed to cool from 95 f dh75 f wb to s8.0 f dry-bulb temperature with chilled water entering the coil at 42 f. face velocity should not exceed 500 fpm. assume water velocity to be 6 f's and water temperature rise wtr st. determine (o) the volume flow rate (b) the number of rows (c) the number of fins per foot (d) the rate of heat transfer in the coil in tons and (e) the rate of latent heat transfer in the coil in tons

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.