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Q: A vertical steel tube carries water at a pressure of 10 bars. Saturated liquid water is pumped into the D = 0.1 m diameter tube at its bottom end (x = 0) with a mean velocity of unt = 0.05 m/s. The tube is exposed to com busting pulverized coal, providing a uniform heat flux of q" = 100.000 W/m2.
(a) Determine the tube wall temperature and the quality of the flowing water at x = 15 m. Assume Gs,f = 1.
(b) Determine the tube wall temperature at a location beyond x = 15 m where single-phase flow of the vapor exists at a mean temperature of Tsat. Assume the vapor at this location is also at a pressure of 10 bars. Will Plot the tube wall temperature in the range-5 m = x = 30 m