As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate.12. Ts.2}1, Ts,1}SteamInsulation= 490 K, respectively,(a) If the insulation is 27.5 mm thick and its inner and outer surfaces are maintained at T,1what is the rate of heat loss per unit length (q) of the pipe, in W/m?= 800 K and T,2(b) Determine the rate of heat loss per unit length (q'), in W/m, and outer surface temperature T,2, in K, for the steam pipe with theinner surface temperature fixed at T1 = 800 K, inner radius rį = 0.06 m, and outer radius ry = 0.12 m. The outer surface isexposed to an airflow (T, = 25°C) that maintains a convection coefficient of h = 25 W/m2-K and to large surroundings for whichTsur = T, = 25°C. The surface emissivity of calcium silicate is approximately 0.8.%3D

given; →thermal conductivity of insulating material…

As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. 12. Ts.2} 1. Ts,1} Steam Insulation (a) If the insulation is 27.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 Kand T,2 what is the rate of heat loss per unit length (q) of the pipe, in W/m? = 490 K, respectively, %3D

As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. 12. Ts.2} 1. Ts,1} Steam Insulation (a) If the insulation is 27.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 Kand T,2 what is the rate of heat loss per unit length (q) of the pipe, in W/m? = 490 K, respectively, %3D

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 7.29P

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(a) If the insulation is 27.5 mm thick and its inner and outer surfaces are maintained at Ts,1=800 K and Ts,2=490 K, respectively, what is the rate of heat loss per unit length (q′) of the pipe, in W/m?(b) Determine the rate of heat loss per unit length (q′), in W/m, and outer surface temperature Ts,2, in K, for the steam pipe with the inner surface temperature fixed at Ts,1=800 K, inner radius r1=0.06 m, and outer radius r2= 0.18 m. The outer surface is exposed to an airflow (∞T∞=25°C) that maintains a convection coefficient of h=25 W/m2·K and to large surroundings for which Tsur= T∞=25°C. The surface emissivity of calcium silicate is approximately 0.8.
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