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As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. '2. Ta 2} 1. Ts,1} Steam Insulation (a) If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 K and T,2 = 490 K, respectively, what is the rate of heat loss per unit length (g') of the pipe, in W/m? (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 the inner surface temperature fixed at T1 = 800 K, inner radius r = 0.06 m, and outer radius r2 = 0.14 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 Tur = T. = 25°C. The surface emissivity of calcium silicate is approximately 0.8. Part A If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 K and T,2 = 490 K, respectively, what is the rate of heat loss per unit length (q') of the pipe, in W/m? d = W/m

As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. '2. Ta 2} 1. Ts,1} Steam Insulation (a) If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 K and T,2 = 490 K, respectively, what is the rate of heat loss per unit length (g') of the pipe, in W/m? (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 the inner surface temperature fixed at T1 = 800 K, inner radius r = 0.06 m, and outer radius r2 = 0.14 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 Tur = T. = 25°C. The surface emissivity of calcium silicate is approximately 0.8. Part A If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 K and T,2 = 490 K, respectively, what is the rate of heat loss per unit length (q') of the pipe, in W/m? d = W/m

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. "2. Ts.2} 1. Ts,1} Steam - Insulation (a) If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 K and T, 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 T,2, in K, for the steam pipe with the inner surface temperature fixed at T,1 = 800 K, inner radius ri = 0.06 m, and outer radius r2 = 0.14 m. The outer surface is exposed to an airflow (T. = 25°C) that maintains a convection coefficient of h = 25 W/m?.K and to large surroundings for which Tsur = T. = 25°C. The surface emissivity of calcium silicate is approximately 0.8. Part A If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 Kand T,2 = 490 K, respectively, what is the rate of heat loss per unit length (g) of the pipe, in W/m? ď = i W/m Save for Later Attempts: 0 of 3 used Submit Answer
Transcribed Image Text:As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. "2. Ts.2} 1. Ts,1} Steam - Insulation (a) If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 K and T, 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 T,2, in K, for the steam pipe with the inner surface temperature fixed at T,1 = 800 K, inner radius ri = 0.06 m, and outer radius r2 = 0.14 m. The outer surface is exposed to an airflow (T. = 25°C) that maintains a convection coefficient of h = 25 W/m?.K and to large surroundings for which Tsur = T. = 25°C. The surface emissivity of calcium silicate is approximately 0.8. Part A If the insulation is 12.5 mm thick and its inner and outer surfaces are maintained at T,1 = 800 Kand T,2 = 490 K, respectively, what is the rate of heat loss per unit length (g) of the pipe, in W/m? ď = i W/m Save for Later Attempts: 0 of 3 used Submit Answer
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