Answer to Question #107906 in Thermal Power Engineering for rizka fernanda

Question

A pipe carrying steam at 230 °C has an internal diameter of 12
cm and the pipe thickness is 7.5 mm. The conductivity of the
pipe material is 49 W/mK the convective heat transfer coefficient
on the inside is 85 W/m2K. The pipe is insulated by two layers of
insulation one of 5 cm thickness of conductivity 0.15 W/mK and
over it another 5 cm thickness of conductivity 0.48 W/mK. The
outside is exposed to air at 35 °C with a convection coefficient of
18 W/m2K. Determine the heat loss for 5 m length. Also
determine the interface temperatures and the overall heat
transfer coefficient based on inside and outside areas.

Answer 1

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