An insulated steam pipe (k = 312 Btu-in/hr.ft2.0F), located where the ambient temperature is 90 deg F, has an internal diameter of 2 in and external diameter of 2.25 in. The outside diameter of the corrugated asbestos insulation (k = 0.828 Btu-in/hr.ft2.0F) is 5 in and the surface coefficient on the outside is 2.5 Btu/hr.ft2.0F. On the inside, the steam has a temperature of 300 deg F and h = 1000 Btu/hr.ft2.0F. Compute (a) the heat loss per foot of the pipe length, and (b) the surface temperature on the inside of the insulation.
An insulated steam pipe (k = 312 Btu-in/hr.ft2.0F), located where the ambient temperature is 90 deg F, has an internal diameter of 2 in and external diameter of 2.25 in. The outside diameter of the corrugated asbestos insulation (k = 0.828 Btu-in/hr.ft2.0F) is 5 in and the surface coefficient on the outside is 2.5 Btu/hr.ft2.0F. On the inside, the steam has a temperature of 300 deg F and h = 1000 Btu/hr.ft2.0F. Compute (a) the heat loss per foot of the pipe length, and (b) the surface temperature on the inside of the insulation.
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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An insulated steam pipe (k = 312 Btu-in/hr.ft2.0F), located where the ambient temperature is 90 deg F, has an internal diameter of 2 in and external diameter of 2.25 in. The outside diameter of the corrugated asbestos insulation (k = 0.828 Btu-in/hr.ft2.0F) is 5 in and the surface coefficient on the outside is 2.5 Btu/hr.ft2.0F. On the inside, the steam has a temperature of 300 deg F and h = 1000 Btu/hr.ft2.0F. Compute (a) the heat loss per foot of the pipe length, and (b) the surface temperature on the inside of the insulation.
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