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A steel pipe having a 0.05m outer diameter is covered with a 0.042 m thick layer of magnesia (kes 0.07W/m.K) which in turn covered with a 0.024 m layer of fiberglass insulation (kr-0.048 W/m.K). The pipe wall outside temperature T₁-370 K and the outer surface temperature of the fiberglass is T-305K. Neglect the thermal resistance of pipe (a) Calculate the rate of heat loss q per meter of the steel pipe. b) Determine the interfacial temperature T₂ between the magnesia layer and fiberglass layer nsulation.

A steel pipe having a 0.05m outer diameter is covered with a 0.042 m thick layer of magnesia (kes 0.07W/m.K) which in turn covered with a 0.024 m layer of fiberglass insulation (kr-0.048 W/m.K). The pipe wall outside temperature T₁-370 K and the outer surface temperature of the fiberglass is T-305K. Neglect the thermal resistance of pipe (a) Calculate the rate of heat loss q per meter of the steel pipe. b) Determine the interfacial temperature T₂ between the magnesia layer and fiberglass layer nsulation.

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
Problem 1.1MA
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Question (2) A steel pipe having a 0.05m outer diameter is covered with a 0.042 m thick layer of magnesia (Kmg 0.07W/m.K) which in turn covered with a 0.024 m layer of fiberglass insulation (kr = 0.048 W/m.K). The pipe wall outside temperature is T-370 K and the outer surface temperature of the fiberglass is T-305K. Neglect the thermal resistance of pipe (a) Calculate the rate of heat loss q per meter of the steel pipe. (b) Determine the interfacial temperature T₂ between the magnesia layer and fiberglass layer insulation.
Transcribed Image Text:Question (2) A steel pipe having a 0.05m outer diameter is covered with a 0.042 m thick layer of magnesia (Kmg 0.07W/m.K) which in turn covered with a 0.024 m layer of fiberglass insulation (kr = 0.048 W/m.K). The pipe wall outside temperature is T-370 K and the outer surface temperature of the fiberglass is T-305K. Neglect the thermal resistance of pipe (a) Calculate the rate of heat loss q per meter of the steel pipe. (b) Determine the interfacial temperature T₂ between the magnesia layer and fiberglass layer insulation.
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