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Graphical Communication

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This presentation emphasizes the importance of clear and concise graphical communication in conveying complex data. It discusses how graphics can sometimes confuse the audience, highlighting the principle that "less can be more." By focusing on essential data and eliminating extraneous details, presenters can create self-explanatory graphics that enhance understanding. Observations from varying power levels illuminate changes in boiling behavior and system performance, underscoring the need for effective visual representation of data to support verbal explanations.

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Graphical Communication

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  1. Graphical Communication Ben Dalton UTC ENCH 435 September 16, 2008

  2. Introduction • Graphics can be confusing • Sometimes less is more • Focus on the point being made • Best graphics are self-explanatory • Break up complicated data to make it easier to digest

  3. Jumbled Mess

  4. Less can be more • Most important data? • Remove extraneous data • Don’t be afraid of multiple graphs

  5. ~3100W ~2000W ~1000W ~500W

  6. Observations at ~3100 W • Vigorous boiling in reboiler and all trays • Rapid condensation • Leaking water and steam around seal

  7. Observations at ~2000 W • Steady boiling in reboiler and all trays • Moderate condensation • Seal only leaking small amount of steam

  8. Observations at ~1000 W • Gentle boiling in reboiler and most trays • Boiling appeared to have stopped in tray 1 • Very little activity in the condenser • Seal stopped leaking

  9. Observations at ~500W • No boiling in any of the trays • Slight boiling in reboiler • Residual heat? • No activity in the condenser

  10. ~3100W Reboiler Tray 1 ~2000W ~1000W ~500W

  11. Close but not quite

  12. ~3100W ~2000W Cooling Water Return ΔT = 6.7 ΔT = 0.6 ΔT = 3.7 Cooling Water Supply ~1000W ~500W

  13. Summary • Graphics can confuse audience • Done properly, graphics convey a lot of information • Useful for illustrating your words • Big point sizes and high contrast

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