Air (can be assumed as an ideal gas) at an ambient temperature of 30°C flows across (perpendicular to thelength) a 2.5-m long vertical rod of diameter 50 cm. The approach velocity is measured to be 2.5 m/s. Thesurface of the pipe is at a uniform 90°C.10(a) What is the Grashof number in this situation?767×1065928(b) What is the Reynolds number in this situation(c) Which convection mode is dominant free or forced convection?(d) The surface emissivity of the cylinder is 0.9 and the surrounding temperature is 30°C, what is theradiative heat transfer rate from the cylinder?1790 w

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Air (can be assumed as an ideal gas) at an ambient temperature of 30°C flows across (perpendicular to the length) a 2.5-m long vertical rod of diameter 50 cm. The approach velocity is measured to be 2.5 m/s. The surface of the pipe is at a uniform 90°C. 10 (a) What is the Grashof number in this situation? 7.67×10 (b) What is the Reynolds number in this situation 65928 (c) Which convection mode is dominant free or forced convection? (d) The surface emissivity of the cylinder is 0.9 and the surrounding temperature is 30°C, what is the radiative heat transfer rate from the cylinder? 17900

Air (can be assumed as an ideal gas) at an ambient temperature of 30°C flows across (perpendicular to the length) a 2.5-m long vertical rod of diameter 50 cm. The approach velocity is measured to be 2.5 m/s. The surface of the pipe is at a uniform 90°C. 10 (a) What is the Grashof number in this situation? 7.67×10 (b) What is the Reynolds number in this situation 65928 (c) Which convection mode is dominant free or forced convection? (d) The surface emissivity of the cylinder is 0.9 and the surrounding temperature is 30°C, what is the radiative heat transfer rate from the cylinder? 17900

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.20P

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