AS STOWIT IIT the ske Delow, steam pipe of ue ulanmeter is Insulate u with d layer oI lum sincate. 12. Ts.2} 1. Ts,1} Steam Insulation (a) If the insulation is 17.5 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 Ts.2, in K, for the steam pipe with the inner surface temperature fixed at T,1 The outer surface is exposed to an airflow (T = 25°C) that maintains a convection coefficient of h = 25 W/m2.K and to = 800 K, inner radius ri = 0.06 m, and outer radius r2 = 0.1 m. large surroundings for which sur = T = 25°C. The surface emissivity of calcium silicate is approximately 0.8.
AS STOWIT IIT the ske Delow, steam pipe of ue ulanmeter is Insulate u with d layer oI lum sincate. 12. Ts.2} 1. Ts,1} Steam Insulation (a) If the insulation is 17.5 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 Ts.2, in K, for the steam pipe with the inner surface temperature fixed at T,1 The outer surface is exposed to an airflow (T = 25°C) that maintains a convection coefficient of h = 25 W/m2.K and to = 800 K, inner radius ri = 0.06 m, and outer radius r2 = 0.1 m. large surroundings for which sur = 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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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.
12. Ts.2}
1. Ts,1}
Steam
Insulation
(a) If the insulation is 17.5 mm thick and its inner and outer surfaces are maintained at T,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 T.2, in K, for the steam
pipe with the inner surface temperature fixed at Ts,1
The outer surface is exposed to an airflow (T
= 800 K, inner radius ri = 0.06 m, and outer radius r2
= 25°C) that maintains a convection coefficient of h = 25 W/m2-K and to
= 0.1 m.
large surroundings for which Tsur = T_
= 25°C. The surface emissivity of calcium silicate is approximately 0.8.
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