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MMLU-Pro / 11614 / Determine the average surface conductance per unit length ofa long rod, 0.33 in.…

Problem

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question

Determine the average surface conductance per unit length ofa long rod, 0.33 in. diameter, exposed to hot air blast at 110°F.The temperature of the rod has increased from 50°F to70°F in 60 seconds. Assume the thermal conductivity for rodmaterial as k = 300 Btu/hr.ft.°F, \rho = 600lbm/ft^3, and Cp = 0.18 Btu/lbm.°F.

category

engineering

options

  1. 18.06 Btu/hr. ft^2.°F
  2. 16.06 Btu/hr. ft^2.°F
  3. 22.06 Btu/hr. ft^2.°F
  4. 20.06 Btu/hr. ft^2.°F

src

stemez-HeatTransfer

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