problem4-16 - PROBLEM 4.16 KNOWN Thin-walled copper tube...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
PROBLEM 4.16 KNOWN: Thin-walled copper tube enclosed by an eccentric cylindrical shell; intervening space illed with insulation. f FIND: Heat loss per unit length of tube; compare result with that of a concentric tube-shell rrangement. a SCHEMATIC: ASSUMPTIONS: (1) Steady-state conditions, (2) Constant properties, (3) Thermal resistances of opper tube wall and outer shell wall are negligible, (4) Two-dimensional conduction in insulation. c ANALYSIS: The heat loss per unit length written in terms of the shape factor S is and from Table 4.1 for this geometry, ( )( 1 2 q k S/ T T ′ = A ) 2 2 2 -1 S D d 2 / cosh . 2Dd π + = A 4z S ubstituting numerical values, all dimensions in mm, ( ) ( ) 2 2 2 -1 -1 120 30 4 20 S 2 / cosh 2 / cosh 1.903 4.991. 2 120
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern