{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

exam2 - NAME 10.302 Fall 2004 Exam 2 Wednesday 1(60 points...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
NAME: ____________________ 10.302 Fall 2004 Exam 2 Wednesday, November 10, 2004 1. (60 points) The product obtained from the bottom of a distillation column needs, for safety reasons, to be cooled before it is sent to storage. It is proposed that this be achieved by cooling with air in a crossflow exchanger (both fluids unmixed). The general situation is shown in Figure A. A. If the exchanger is infinitely large and if it were counter current (rather than crossflow), what is the minimum mass flow rate of air that would suffice to cool the 10 kg/s of product from 300 ° C to 50 ° C? You may take the air temperature to be 20 ° C. B. If the actual air flow rate exceeds the minimum found in Part A by 10%, but the exchanger configuration is crossflow, will operation be possible in an exchanger of reasonable size? C. The plan is to use tubes for which the OD is 1.0 inch and the ID is 0.8 inch. The tube length will be 10 ft. The material is carbon steel. The average linear velocity of the product within the tubes will be 1 m/s. That of the air outside the tube will be 4 m/s. The situation is sketched in
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
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