Water enters a uniformly heated vertical tube of diameter 2 in and length 15 ft. Total heat applied.

Water enters a uniformly heated vertical tube of diameter 2
in and length 15 ft. Total heat applied to the tube is 100 kW. Inlet pressure,
temperature, and mass flow rate of water are given as 1000 psia, 500 F, and 0.5
lbm/s, respectively. Find the pre-heating length, exit quality, and various
pressure differential terms.