Graphical Communication Ben Dalton UTC ENCH 435 September 16, 2008.
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Transcript of Graphical Communication Ben Dalton UTC ENCH 435 September 16, 2008.
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
50
60
70
80
90
100
110
0 10 20 30 40 50 60
Time (min)
Te
mp
era
ture
(°C
)
0
500
1000
1500
2000
2500
3000
3500
Re
bo
ile
r P
ow
er
(W)
Reboiler Power
Tray 1
Reflux
Not Steady State
~2000W
~1000W
~3100W
~500W
Less can be more
Most important data?
Remove extraneous data
Don’t be afraid of multiple graphs
Engineering
40
50
60
70
80
90
100
110
20 30 40 50 60 70 80 90 100 110
Time (sec)
Inp
ut
(%)
0
500
1000
1500
2000
2500
3000
3500
Engineering
40
50
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100
110
20 30 40 50 60 70 80 90 100 110
Time (sec)
Inp
ut
(%)
0
500
1000
1500
2000
2500
3000
3500
~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 reboilerResidual heat?
No activity in the condenser
Engineering
70
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90
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100
105
20 30 40 50 60 70 80 90 100 110
Time (sec)
Inp
ut
(%)
0
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1500
2000
2500
3000
3500
Engineering
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100
105
20 30 40 50 60 70 80 90 100 110
Time (sec)
Inp
ut
(%)
0
500
1000
1500
2000
2500
3000
3500
~500W~1000W
~2000W
~3100W
Tray 1
Reboiler
Close but not quite
25
27
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31
33
35
37
0 10 20 30 40 50 60
Time (min)
Te
mp
era
ture
(°C
)
0
500
1000
1500
2000
2500
3000
3500
Re
bo
iler
Po
we
r (W
)
Reboiler Power
Cooling Water Supply
Cooling Water Return
~2000W
~3100W
~1000W
~500W
ΔT = 6.7
ΔT = 3.7
ΔT = 0.1ΔT = 0.6
Engineering
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20 30 40 50 60 70 80 90 100 110
Time (sec)
Inp
ut
(%)
0
500
1000
1500
2000
2500
3000
3500
Engineering
24
26
28
30
32
34
36
38
20 30 40 50 60 70 80 90 100 110
Time (sec)
Inp
ut
(%)
0
500
1000
1500
2000
2500
3000
3500
~3100W
~2000W
~1000W~500W
Cooling Water Supply
Cooling Water Return
ΔT = 6.7
ΔT = 3.7
ΔT = 0.6
Summary
Graphics can confuse audience
Done properly, graphics convey a lot of information
Useful for illustrating your words
Big point sizes and high contrast