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MMLU-Pro / 12098 / A pipe is cooled internally by forced convection from the flow of a…

Problem

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question

A pipe is cooled internally by forced convection from the flow of a non-Newtonian fluid. The pipe is 5 ft. long, with a diameter of 1 in. The flow is measured at 600Ibm/hr, and the wall surface temperature is 200°F. Assume it is a laminar flow of a power-law fluid. Physical and flow properties are: \rho = 65lbm/ft^3c_p = 0.5 Btu/lbm-°F k = 0.7 Btu/hr-ft-°F n = n' = 0.4 (constant) K = 94 lbm-sec^n-2/ft at 100°F = 42 lbm-sec^n-2/ft at 200°F A plot of log K vs. T°F is a straight line. If the fluid enters the section at 100°F, at what temperature does it leave?

category

engineering

options

  1. 140°F
  2. 170°F
  3. 120°F
  4. 160°F
  5. 115°F
  6. 110°F
  7. 200°F
  8. 100°F
  9. 150°F
  10. 130°F

src

stemez-HeatTransfer

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