Consider the idealized flow arrangement depicted in Fig. 6.3 where air at 32°C and 40% relative humidity flows over a film of water maintained at a constant temperature of 24°C. The pressure is...

Consider the idealized flow arrangement depicted in Fig. 6.3 where air at 32°C and 40% relative humidity flows over a film of water maintained at a constant temperature of 24°C. The pressure is constant at 101.3 kPa. The area of the exposed surface of the water film is 2.3 m2 . (i) Calculate the rates of sensible heat transfer, the latent heat transfer, and total energy transfer from the water to the air. (ii) Calculate the external energy input required to maintain the water film under steady conditions. Assume that the convective heat transfer coefficient is 45 Wmí2 Kí1 .