Cooling water flows through the tube of a condenser at such a rate that the inside film coefficient is 1300 btu/hr-sq ft f. the tube has an ok of 0.875 in. and a well thickness of 0.0375 in. the thermal conductivity of the tube metal is 64.0 btu/hr ft f. steam condenses on the outside of the tube with a film coefficient of 2000 btu/hr-sq ft f. what’s the overall film coefficient based on the outside tube diameter?

What precautions should you take to prevent injuries when dealing with heavy loads?

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.