As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate."2. Ta2}1. Ta,1}SteamInsulation(a) If the insulation is 10 mm thick and its inner and outer surfaces are maintained at T, = 800 K and Ta = 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 (d), in W/m, and outer surface temperature T,2, in K, for the steam pipe with theInner surface temperature fixed at T = 800 K, inner radius = 0.06 m, and outer radius n = 0.18 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 whichTur = T, = 25°C. The surface emissivity of calcium silicate is approximately 0.8.

The thermal resistance of a cylinder can be calculated using the formula given below- R=12πkLlnrori…

As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. 2. Ta2} 1. Ta,1} Steam Insulution (a) If the insulation is 10 mm thick and its inner and outer surfaces are maintained at T = 800 K and T,a = 490 K. respectively, what is the rate of heat loss per unit length (a) of the pipe, in W/m? (b) Determine the rate of heat loss per unit length (4), in W/m, and outer surface temperature T2, in K. for the steam pipe with the Inner surface temperature fixed at T = 80O K, Inner radius r = 0.06 m, and outer radius n = 0.18 m. The outer surface is exposed to an alrflow (T 25°C) that maintains a convection coefficient of h = 25 W/m-K and to large surroundings for which Tur = T, = 25°C. The surface emissivity of calcium silicate is approximately 0.8.

As shown in the sketh below, a steam pipe of 0.12-m inside diameter is insulated with a layer of calcium silicate. 2. Ta2} 1. Ta,1} Steam Insulution (a) If the insulation is 10 mm thick and its inner and outer surfaces are maintained at T = 800 K and T,a = 490 K. respectively, what is the rate of heat loss per unit length (a) of the pipe, in W/m? (b) Determine the rate of heat loss per unit length (4), in W/m, and outer surface temperature T2, in K. for the steam pipe with the Inner surface temperature fixed at T = 80O K, Inner radius r = 0.06 m, and outer radius n = 0.18 m. The outer surface is exposed to an alrflow (T 25°C) that maintains a convection coefficient of h = 25 W/m-K and to large surroundings for which Tur = T, = 25°C. The surface emissivity of calcium silicate is approximately 0.8.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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