A steel pipe (k=43 W/m.K) has inner and outer diameters are 5 cm and 6 cm, respectively. The pipe is covered with high temperature insulation material. Thermal conductivity and thickness of the insulation are 0.11 W/m.K and 0.012 m, respectively. Steam at 115,82°C flows in the pipe. The unit thermal resistance at the inner wall is 0.0026 m2.K/W. The heat transfer coefficient at the outer surface is 17 W/m2.K. The ambient temperature is 55,54°C. Estimate the rate of heat loss per unit length (W/m).

A steel pipe (k=43 W/m.K) has inner and outer diameters are 5 cm and 6 cm, respectively. The pipe is covered with high temperature insulation material. Thermal conductivity and thickness of the insulation are 0.11 W/m.K and 0.012 m, respectively. Steam at 115,82°C flows in the pipe. The unit thermal resistance at the inner wall is 0.0026 m2.K/W. The heat transfer coefficient at the outer surface is 17 W/m2.K. The ambient temperature is 55,54°C. Estimate the rate of heat loss per unit length (W/m).

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.18P: Estimate the rate of heat loss per unit length from a 5-cm ID, 6-cm OD steel pipe covered with...

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