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Consider the liquid oxygen storage system and the laboratory environmental conditions of Problem 149 To reduce oxygen loss due to vaporization an insulating layer should be applied to the outer

Consider the liquid oxygen storage system and the laboratory environmental conditions of Problem 1.49. To reduce oxygen loss due to vaporization, an insulating layer should be applied to the outer surface of the container. Consider using a laminated aluminum foil/glass mat insulation, for which the thermal conductivity and surface emissivity are k = 0.00016 W/m ∙ K and ε = 0.20, respectively.

(a) If the container is covered with a 10-mm-thick layer of insulation, what is the percentage reduction in oxygen loss relative to the uncovered container?

(b) Compute and plot the oxygen evaporation rate (kg/s) as a function of the insulation thickness t for 0  ≤ t ≤ 50 mm.

Jun 28 2020 View more View Less

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