Water is evaporated continuously at 100°C in an evaporator by cooling 500 kg of air per hour from 260 C to 150 C. Calculate the heat transfer surface area required and the steam evaporation per hour,...

Water is evaporated continuously at 100°C in an evaporator by cooling 500 kg of air per hour from 260C to 150C. Calculate the heat transfer surface area required and the steam evaporation per hour, if the liquid enters at 100C. Take U₀
= 46 W/m²
K and cp of air 1.005 kJ/kg K. At 100, h_fg
= 2257 kJ/kg.