1 / 10

Tube Length and Transfer Area

Tube Length and Transfer Area. Liu Shuang Xing 3S419 Damian Goh 3S404 Ng Jun Da 3S315. Tube Length. Introduction. ‘Tube’ refers to heat exchanger’s tube. Tube. Tube length. Tube length Determined by the pressure drop constraint

ashlyn
Download Presentation

Tube Length and Transfer Area

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tube Length and Transfer Area Liu Shuang Xing 3S419 Damian Goh 3S404 Ng Jun Da 3S315

  2. Tube Length

  3. Introduction • ‘Tube’ refers to heat exchanger’s tube Tube

  4. Tube length • Tube length • Determined by the pressure drop constraint • Changes in number or length of tube required to meet the pressure drop constraints • Preferred tube length : shell diameter • 5:10 range • Too long tubes and few tubes are costly

  5. Tube length • Small shell diameter, long tube length • Cheaper • Small volume but same contact area • Efficient • ‘Surface area to volume ratio’

  6. Transfer Area

  7. Transfer area • The ‘contact point’ of both fluids • Only the container acts as a separator • Affected by: • Number of tubes • Length of tubes

  8. Transfer area Q=U*A*dTlm Q = Heat transfer rate between the fluids U = Overall heat transfer coefficient A = Heat transfer area dTlm = Log mean temperature difference of the system Which means heat transfer area is proportional to heat transfer rate

  9. Transfer area Larger surface area Increased efficiency of exchange of heat More contact area of fluid Faster rate of conduction

  10. http://www.rpi.edu/dept/chem-eng/Biotech-Environ/FERMENT/index.htmlhttp://www.rpi.edu/dept/chem-eng/Biotech-Environ/FERMENT/index.html • http://www.chemstations.net/documents/shell.pdf • http://en.wikipedia.org/wiki/Outside_diameter#Outside_diameter • http://en.wikipedia.org/wiki/Heat_exchanger

More Related