ibs lbs lbs ub = 0.044 w = 0.004 ft-sec ft-sec' ft-sec' 2. An oil has 0.62 inch steel tube, through v hich flows an oil. The properties of of oil are as follows; = 0.034 and specific gravity at 60 F IS 0.899. The oil enters at a temperature of t = 60F and flows with an average velocity of 4 feet per second. The inside surface area is 0.1613 ft per feet length, and the inside sectional area is 0.3019 in. The length of one pass of the tube is 10 feet. Condensing steam at 215F surround the tubes. Assume that the inside surface temperature of the pipe is 210F and a bulk temperature of 72F. If the specific heat of oil is 0.5 and its conductivity k = 0.08 2 btu-ft what is the temperature at the end of 10 feet pass? hr-F-ft btu lbs-F