Saturated steam condenses in a horizontal steam condenser at a pressure of 14 kPa. Each of the 180 parallel tubes in the condenser has an inside diameter of 12.6 mm and an average liquid water velocity of 1 m/s. If the cooling water (c_p= 4.18 kJ/kg · °C) enters at 20° C and exits at 48° C, find the steam condensation rate (kg/hr).