A 10 cm outer diameter pipe carrying saturated steam at a temperature of 195C is lagged to 20 cm diameter with magnesia and further lagged with laminated asbestos to 25 cm diameter. The entire pipe is further protected by a layer of canvas. If the temperature under the canvas is 20°C, find the mass of steam condensed in 8 hrs on a 100m length of pipe and interface temperature. Take thermal
A 10 cm outer diameter pipe carrying saturated steam at a temperature of 195C is lagged to 20 cm diameter with magnesia and further lagged with laminated asbestos to 25 cm diameter. The entire pipe is further protected by a layer of canvas. If the temperature under the canvas is 20°C, find the mass of steam condensed in 8 hrs on a 100m length of pipe and interface temperature. Take thermal
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.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.22P
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A 10 cm outer diameter pipe carrying saturated steam at a temperature of 195C is lagged
to 20 cm diameter with magnesia and further lagged with laminated asbestos to 25 cm
diameter. The entire pipe is further protected by a layer of canvas. If the temperature under
the canvas is 20°C, find the mass of steam condensed in 8 hrs on a 100m length of pipe and
interface temperature. Take thermal conductivity of magnesia as 0.07 W/m – K and that of
asbestos as 0.082 W/m – k. Neglect the thermal conductivity of the pipe material. The latent
heat of steam for given conditions can be taken as 1951 kJ/kg–K.
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