A thick -walled tube of stainless steel (ks = 19.0 W/m.°C) with 2 cm inner diameter (ID) and 4 cm outer diameter (OD) is covered with a 3 cm layer of asbestos insulation (ka = 0.2 W/m.°C). If the inside wall temperature of the pipe is maintained at 600 °C and the surface temperature on the insulating material remain constant at 293 °C, Write PHP program to calculate the heat lost per meter length. 27 (T- T2) In (2) In ka %3D ks

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Question 1
A thick -walled tube of stainless steel (ks = 19.0 W/m.°C) with 2 cm inner diameter (ID) and 4 cm outer
diameter (OD) is covered with a 3 cm layer of asbestos insulation (ka = 0.2 W/m. C). If the inside wall
temperature of the pipe is maintained at 600 °C and the surface temperature on the insulating material remain
constant at 293 °C, Write PHP program to calculate the heat lost per meter length.
2п (T, — Т)
(T3
-
L.
In (2
In
ks
+ ka
Transcribed Image Text:Question 1 A thick -walled tube of stainless steel (ks = 19.0 W/m.°C) with 2 cm inner diameter (ID) and 4 cm outer diameter (OD) is covered with a 3 cm layer of asbestos insulation (ka = 0.2 W/m. C). If the inside wall temperature of the pipe is maintained at 600 °C and the surface temperature on the insulating material remain constant at 293 °C, Write PHP program to calculate the heat lost per meter length. 2п (T, — Т) (T3 - L. In (2 In ks + ka
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