42. A fuel rod is producing heat at a rate of 8 kW/ft. The rod has a central hole. Helium flows over the rod as well as inside the central hole. Find the maximum temperature and its location for this fuel rod. Fuel geometry data: diameter of the central hole: 0.25 in, thickness of the inner clad: 1/8 in, outside diameter of fuel: 1 in, thickness of outer clad: 1/8 in. Thermal conductivity data: clad: 30 Btu/h-ft-F, fuel: 1 Btu/h-ft-F. Temperature and heat transfer coefficient data: bulk fluid temperature in the central hole: 595 F, heat trans- fer coefficient in the central hole: 3000 Btu/h-ft²-F, bulk fluid temperature outside the fuel rod: 590 F, heat transfer coefficient outside fuel rod: 2500 Btu/h-ft²-F.

42. A fuel rod is producing heat at a rate of 8 kW/ft. The rod has a central hole. Helium flows over the rod as well as inside the central hole. Find the maximum temperature and its location for this fuel rod. Fuel geometry data: diameter of the central hole: 0.25 in, thickness of the inner clad: 1/8 in, outside diameter of fuel: 1 in, thickness of outer clad: 1/8 in. Thermal conductivity data: clad: 30 Btu/h-ft-F, fuel: 1 Btu/h-ft-F. Temperature and heat transfer coefficient data: bulk fluid temperature in the central hole: 595 F, heat trans- fer coefficient in the central hole: 3000 Btu/h-ft²-F, bulk fluid temperature outside the fuel rod: 590 F, heat transfer coefficient outside fuel rod: 2500 Btu/h-ft²-F.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.36P

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