In a steam-water tubular heat exchanger, the dry, saturated water vapor, whose pressure is P = 3.5 x 105 Pa, condenses on the outer surface of the tubes. The water, flowing through the tubes is heated from 20C to 90C. Determine: a. The steam flow rate in the steam-water exchanger if the water flow rate is 8 L/h. Assume that there is no subcooling of the condensate. b. The effectiveness of the exchanger c. The heat exchange area, if the overall heat transfer coefficient is 250 W/m2K.