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In a certain manufacturing process a certain Liquid gas under 14.7 psia pressure with has a normal boiling point of -183 °C. They decided to be store this in a spherical container with 11.811 inches OD. The system is kept adiabatic by enclosing the container inside another concentric sphere of 0.45 m ID, with intervening space evacuated. Both the sphere surfaces are made of aluminum with e= 0.3. The temperature of the outer sphere is 40°C. To miminized heat gain a polished aluminum with an emissivity of 0.03 was used for container walls. Determine the percentage reduction. choices 81,90% 10.67% 83.12% 39,68% 78.56% 89.75%

In a certain manufacturing process a certain Liquid gas under 14.7 psia pressure with has a normal boiling point of -183 °C. They decided to be store this in a spherical container with 11.811 inches OD. The system is kept adiabatic by enclosing the container inside another concentric sphere of 0.45 m ID, with intervening space evacuated. Both the sphere surfaces are made of aluminum with e= 0.3. The temperature of the outer sphere is 40°C. To miminized heat gain a polished aluminum with an emissivity of 0.03 was used for container walls. Determine the percentage reduction. choices 81,90% 10.67% 83.12% 39,68% 78.56% 89.75%

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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In a certain manufacturing process a certain Liquid gas under 14.7 psia pressure with has a normal boiling point of -183 °C. They decided to be store this in a spherical container with 11.811 inches OD. The system is kept adiabatic by enclosing the container inside another concentric sphere of 0.45 m ID, with intervening space evacuated. Both the sphere surfaces are made of aluminum with e= 0.3. The temperature of the outer sphere is 40°C. To miminized heat gain a polished aluminum with an emissivity of 0.03 was used for container walls. Determine the percentage reduction.

choices

  1. 81,90%

  2. 10.67%

  3. 83.12%

  4. 39,68%

  5. 78.56%

  6. 89.75%

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