Thermal jackets are typically put on cryogenic storage tanks to minimize the heat transfer gains from the surroundings. Consider a cylinder container that is 1.5 m long made from steel (k = 750 W/m.K) with an inner diameter of 0.5 m and outer diameter of 0.7 m. If the liquefied natural gas (LNG) inside the cylinder is maintained at 90 K, ambient conditions are Tamb = 20 °C, h = 7 W/m2 .K. What is the required thermal jacket thickness to maintain the outer temperature of that jacket of 15 °C? (Take a thermal conductivity of the insulation to be
Thermal jackets are typically put on cryogenic storage tanks to minimize the heat transfer gains from the surroundings. Consider a cylinder container that is 1.5 m long made from steel (k = 750 W/m.K) with an inner diameter of 0.5 m and outer diameter of 0.7 m. If the liquefied natural gas (LNG) inside the cylinder is maintained at 90 K, ambient conditions are Tamb = 20 °C, h = 7 W/m2 .K. What is the required thermal jacket thickness to maintain the outer temperature of that jacket of 15 °C? (Take a thermal conductivity of the insulation to be
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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Thermal jackets are typically put on cryogenic
storage tanks to minimize the heat transfer gains
from the surroundings. Consider a cylinder
container that is 1.5 m long made from steel (k = 750
W/m.K) with an inner diameter of 0.5 m and outer
diameter of 0.7 m. If the liquefied natural gas (LNG)
inside the cylinder is maintained at 90 K, ambient
conditions are Tamb = 20 °C, h = 7 W/m2
.K. What is
the required thermal jacket thickness to maintain
the outer temperature of that jacket of 15 °C? (Take
a thermal conductivity of the insulation to be kins =
0.015 W/m.K). Image credit: Okorder. Image for
illustrative purposes only.
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