Vegetable oil is boiled by passing steam at 215ºF through a 1-inch ID by 1.25-inch OD steel tube. Predict the overall heat transfer coefficient based on the outside area of the tube if the convective heat transfer coefficients are 25 Btu/hr?ft^2?ºF for steam and 15 Btu/hr?ft^2 ?ºF for the vegetable oil. Neglect fouling factors.
What will be an ideal response?
The overall heat transfer coefficient accounts for convection heat transfer on the inside
surface, conduction through the steel tube, and convection outside the tube. If we use a
value of 25 Btu/hr?ft^2 ?0F for the thermal conductivity of the tube, then
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