Humid atmospheric air at 1 atm, 300⁰C and 90% relative humidity is cooled to 100⁰C while the mixture pressure remains constant. Calculate the amount of water in kg/kg dry air removed from the air and the cooling requirement in kJ/kg dry air when the liquid water leaves the system at 150⁰C​

Cold water (cp=4180j/kg k) leadıng to a shower enters a thin-walled double-pipe heat transfer at 15c at a rate of 0.25kg/s and is heated to 45c by hot water (cp=4190j/kg k) that enters at 100c at the rate of 3kg/s. if the overall heat transfer coefficient is 950w /m2 k , determıne the rate of heat transfer and the heat transfer surface area of the heat exchanger using e - ntu method