A boiler is producing methanol vapor at 1 atm using hot oil flowing through a single 1-in. OD x 0.134-in. wall thickness 304 stainless tube as a source of heat. From one test of the equipment the...

A boiler is producing methanol vapor at 1 atm using hot oil flowing through a single 1-in. OD x 0.134-in. wall thickness 304 stainless tube as a source of heat. From one test of the equipment the following data are available

inlet oil temperature = 210°F outlet oil temperature = 196°F

inside heat transfer coefficient = 100 Btu / (h ft^2
oF)

Determine the boiling heat transfer coefficient and the approximate heat flux.