problem4-81 - PROBLEM 4.81 KNOWN Upper surface of a platen...

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

View Full Document Right Arrow Icon
PROBLEM 4.81 KNOWN: Upper surface of a platen heated by hot fluid through the flow channels is used to heat a rocess fluid. p FIND: (a) The maximum allowable spacing, W, between channel centerlines that will provide a uniform temperature requirement of 5 ° C on the upper surface of the platen, and (b) Heat rate per unit ength from the flow channel for this condition. l SCHEMATIC: ASSUMPTIONS: (1) Steady-state, two-dimensional conduction with constant properties, and (2) ower surface of platen is adiabatic. L ANALYSIS: As shown in the schematic above for a symmetrical section of the platen-flow channel arrangement, the temperature uniformity requirement will be met when T 1 – T 2 = 5 ° C. The maximum temperature, T 1 , will occur directly over the flow channel centerline, while the minimum surface temperature, T 2 , will occur at the mid-span between channel centerlines. We chose to use FEHT to obtain the temperature distribution and heat rate for guessed values of the channel centerline spacing, W.
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