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Graphical Communication. Ben Dalton UTC ENCH 435 September 16, 2008. 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. Jumbled Mess. Less can be more.
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Graphical Communication Ben Dalton UTC ENCH 435 September 16, 2008
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
Less can be more • Most important data? • Remove extraneous data • Don’t be afraid of multiple graphs
~3100W ~2000W ~1000W ~500W
Observations at ~3100 W • Vigorous boiling in reboiler and all trays • Rapid condensation • Leaking water and steam around seal
Observations at ~2000 W • Steady boiling in reboiler and all trays • Moderate condensation • Seal only leaking small amount of steam
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
Observations at ~500W • No boiling in any of the trays • Slight boiling in reboiler • Residual heat? • No activity in the condenser
~3100W Reboiler Tray 1 ~2000W ~1000W ~500W
~3100W ~2000W Cooling Water Return ΔT = 6.7 ΔT = 0.6 ΔT = 3.7 Cooling Water Supply ~1000W ~500W
Summary • Graphics can confuse audience • Done properly, graphics convey a lot of information • Useful for illustrating your words • Big point sizes and high contrast