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Summer Test ProgramCarbon Analysis
MeadWestvaco Corporation
Carbon Department
Covington, VA 24426
2
Test CasesBoat
ManufacturerType Fuel Tank Volume Canister Volume Test Date(s)
Four Winns 17’ Open Bow 24 gallon 1.0 liter 8/25
Four Winns 18’ Open Bow 32 gallon 1.0 liter
Crestliner 17’ Open Boat 24 gallon 1.0 liter 9/20
Crestliner 18’ Open Boat 31 gallon 1.0 liter
Crestliner 23’ Pontoon 25 gallon 1.0 liter 9/20
Crestliner 23’ Pontoon 25 gallon 1.0 liter
Four Winns 19’ Open Bow 50 gallon 1.5 liter 8/25
Four Winns 21’ Open Bow 50 gallon 1.5 liter
Four Winns 27’ Cruiser 85 gallon 2.5 liter
Century 26’ Sportfisherman 150 gallon 4.0 liter 8/16
Century 26’ Offshore 150 gallon 4.0 liter
Grady White 23’ Offshore 150 gallon 4.0 liter 9/16
Grady White 30’ Offshore (2) 150 gallon 4.0 liter 8/4 & 9/15
Century 29’ Sportfisherman 300 gallon (2) 3.5 liter 9/7
3
BWC Procedure
Load Canister with100% Butane at 600 cc/min to50% Breakthrough
Vacuum PurgeCanister at 10 lpm for 300 bed volumes
Load Canister with100% Butane at 600 cc/min to50% Breakthrough
Conditions Canister to
ReproducibleState
Purges butaneAnd gasolineFrom Canister
EstablishesCapacity of
Canister underStandard conditions
4
BWC Apparatus
ButaneCylinder
VacuumPump
PurgeFlow meter
Butane Feed
Flow meter
Butane VentFlow meter
VentBubble Meter
TempMeter
5
BWC Test Results
Net BWC Correlation with Canister Volume
0
5
10
15
20
25
30
35
40
45
50
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8
Canister Volume (liters)
No
rma
lize
d B
WC
(g
ram
s/li
ter)
6
Repeat Testing at Grady WhiteGrady White Bimini 4.0 Liter On-Site Butane Test Results 8/4/2005 and 9/15/05
0
50
100
150
200
250
300
350
400
450
500
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
Time (min)
Dis
char
ge
Flo
w R
ate
(mL
/min
)
Initial Load Final Load
Canister Volume 4.0 LCarbon Type SeaGuard™ 3 mmNet BWC 115 gramsNormalized BWC 28.7 gramsButane Feed (100%) 600 mL/minPurge 300 bv at 10 lpm
1 12 2
No degradation in capacity was identified
7
Summary
Testing showed no degradation in capacity due to moisture or liquid gasoline exposure
Regenerable carbon capacity was maintained throughout test period
Carbon capacity was unaffected by physical stresses associated with marine use
Carbon canisters did not affect performance of boats
8
Future Work
Carbon canisters will be removed from boats and tested for particle size distribution, heel analysis, and capacity
Two canisters will remain on boats for long-term testing