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FLOW PATTERN

FLOW PATTERN. a good length of liquid path. a very long liquid path. high liquid–vapor ratios. FLOW PATTERN. Cross flow. Double pass. SINGLE PASS. DOUBLE PASS. DOWN COMERS AND WEIRS. WEIR. Straight Horizontal Adjustable Notched. DOUBLE PASS SLOPPED DOWNCOMERS. MECHANICAL SUPPORTS.

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FLOW PATTERN

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  1. FLOW PATTERN a good length of liquid path a very long liquid path high liquid–vapor ratios

  2. FLOW PATTERN Cross flow Double pass

  3. SINGLE PASS

  4. DOUBLE PASS

  5. DOWN COMERS AND WEIRS

  6. WEIR Straight Horizontal Adjustable Notched

  7. DOUBLE PASS SLOPPED DOWNCOMERS

  8. MECHANICAL SUPPORTS

  9. MANWAY

  10. TRAY HYDRAULICS

  11. CAPACITY GRAPH FOR A TYPICAL BUBBLE-CAP TRAY

  12. FLOW REGIMES

  13. CLOSE-UPS Cellular foam Froth (Operating regime)

  14. CLOSE-UPS Emulsion regime Froth regime

  15. TRAY EFFICIENCY Efficiency correlation (O’Connell, 1946) Overall efficiency

  16. MURPHREE EFFICIENCY MODEL It is possible to have Thus,

  17. SIEVE TRAY LAYOUT Net area Hole area Active area

  18. LIQUID PRESSURE HEADS ON SIEVE TRAY

  19. PRESSURE HEADS ON BUBBLE CAP TRAY

  20. COLUMN DIAMETER Estimate from VS

  21. Capacity factor versus flow parameter

  22. ADIOS! • All of the references are provided during class lectures. • All of the pictures are taken from various books and Websites solely for educational purpose. • The author is thankful to Dr, Syeda Sultana Razia, associate professor, ChE, BUET, for developing the core concept of this presentation.

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