energy-savings basics for the maritime industry - operational measures
TRANSCRIPT
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
1/24
Dr.GeorgeGougoulidis
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
2/24
Voyageplanning
Slowsteaming Speedoptimization
Weatherrouteing
Justintime
Optimizedshaft
power
Optimumtrim
Optimumballast
Optimum
use
of
rudder
and
heading
control
systems
Hullmaintenance
Propulsionsystemmaintenance(engines,propellers)
Trainingofpersonnel
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
3/24
It
can
encompass
other
measures
such
as
weatherrouteing,justintime,speed
optimization
Thereare
various
software
available
for
planningpurposes
Prevoyageanalysis&planning
Deployideal
vessel
to
each
route
Designbestroutes
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
4/24
Planfor
Minimizingtime:recommendoptimumroutetomeetearliestarrivaltime.
Minimizing
fuel
consumption:
recommend
the
optimumrouteandpowertoarriveontimewith
minimumfuelconsumption
Minimizing
cost:
recommend
the
optimum
route
andpowertoarriveonthebasisofminimumcost
Enrouterealtimeupdates
Post
voyage
assessment
and
feedback
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
5/24
Speed
optimization
vs speed
reduction Reducingshipspeedeffectivelyreducesfuel
consumption
Propulsionpower
vs.
speed
is
athird
power
relation
AstudyconductedbyIMOprovedthat
optimalspeed
reduction
is
between
10
20%
Costeffectivenessof10%superiorto20%
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
6/24
Optimizationshouldbecarriedoutfortheoffdesign
conditions
Originallyexcellenthullforms,optimizedfordesignspeedanddraft,mayshowpoor
performance
when
sailing
at
lower
speeds,
especiallyin
apartial
loading
condition
Optimumspeedmeansthespeedatwhichthefuelusedpertonne mileisminimum
Itdoes
not
mean
minimum
speed
Sailingslowerthanoptimumspeedwillconsumemorefuel
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
7/24
Slow
steaming
remains
controversial,
especiallywitholderenginesnotoriginally
designedforthepractice
However,it
remains
the
easy
solution
of
copingwithunfavorablemarketconditions
Overcapacity lowfreightrates slow
steamingwill
become
even
slower
and
even
moreprevalent
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
8/24
Userealtimedataofthephysical
environmentto
choose
the
optimal
routethroughcalmareas
Weatherrouteing canbeappliedto
allship
types
and
trade
areas
Theincreaseofresistancecausedby
heavyweatherdependsonthe
current,
the
wind,
and
the
wave
size Theresistanceinheadseascan
increasebyasmuchas50100%ofthetotalshipresistanceincalm
weather
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
9/24
Early
communication
with
port
authorities
to
ensuretheexacttimeofberthavailabilityand
planforoptimumspeedtoarrivejustintime
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
10/24
Lessturnaroundtimeinportallowsforspeedreduction
while
underway
Appliestoshipswithscheduledoperations,suchasferriesandcontainervessels
Measuresfor
improvement
include:
Bettermaneuveringcapabilitiesoftheship
Increasedcargoflowbyusingsophisticatedship
systems,such
as
ramps,
lifting
equipment
Increasedcargoflowduetoimprovedportloading/offloadingsystems
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
11/24
Theprovisionof
shoreside electricalpowertoashipat
berthwhileitsauxiliary
enginesare
shut
down
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
12/24
Trimhasanimmediateeffectin
resistance Foranygivendraftthereisatrim
conditionthatgivesminresistance
Severalsystemsinthemarket
Collectdatafromthevessel'sautomationandnavigation
systemstooptimizetrim
GreenSteam Optimizer,Enirams
DynamicTrimmingAssistant,etc
Potentialsavingsupto4%
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
13/24
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
14/24
Hull Regular
in
water
inspection
of
the
condition
of
the
hull
Monitoringofthefouling
Monitoring
of
the
coatings
condition Cleaningofthehullwhenrequired
Dockingintervalsplanning
Completeremovalandapplicationofnewcoatingsfor
reductionof
roughness
Propeller Usediverstopolishthepropellerinregularintervals
whileshipis inservice
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
15/24
Physicalroughness
Macro
Welds
Corrosion
Platewaviness
Platelaps
Mechanicaldamage
Micro
Minorcorrosion
Steelprofile
Coatingscondition
Biologicalroughness
Macro
Animalfouling
Weedfouling
Micro
Slimefouling
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
16/24
IncreaseinResistance@15kt IncreaseinResistance@30kt
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
17/24
Inabsolutetermspropellerroughnessisless
importantthanhullroughness
Interms
of
energy
loss
per
unit
area
propeller
roughnessissignificantlymoreimportant
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
18/24
Typicalcleaning
intervalsshould
be:
6monthsforpropellers
2monthsforhull
(dependson
coating
type)
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
19/24
MeasuredwithRubert Scale
Underwatercleaning
can
smoothenthepropellerby2
gradesoftheRubert scale Frequent
propeller
cleaning
(every1or2months)canbe
easilydoneusingasoft
brushand
abrasives
EnoughtokeepapropelleratRubert GradeAorB
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
20/24
Cleaning
takes
less
time
than
polishing Alargepropellercanbepolishedin~4h
Withregardtothefrequencyofpropeller
polishingthere
is
aconsensus
of:
little
and
oftenbyexperiencedandspecialized
personnel
Costof
propeller
cleaning
(brush
&
abrasives)
1520%lessthanfullpolishingwithgrinding
orpolishingdiscs
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
21/24
Athermalapplicatormovingovertheunderwater
hull,delivering
athermal
shock
that
kills
all
bio
fouling
Thethermalshockiscreatedby'lowflow'hotsea
water
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
22/24
Thedeadbiofouling
remainsattached
to
the
hulluntiltheshipis
underwayandremoved
bythe
accelerated
hydraulicforces
Noteffectiveonhard
foulingsuch
as
barnacles
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
23/24
Followmanufacturersinstructionson
maintenanceschedule Conditionbasedmaintenance
Maintenanceis
performed
based
on
information
receivedbytheequipmentandonevaluationofthisinformationbyexperts
-
8/13/2019 Energy-Savings Basics For The Maritime Industry - Operational Measures
24/24
Persuadethepersonnelofthenecessityofenergy
savings
Createacultureoffuelsaving,withanincentiveorbonusbasedonfuelsavings
Alterthe
routine
ShutdownACPlantwhentheweatherisgoodanduseonlytheblowers
Switch
off
lights
in
areas
such
as
cabins,
recreationrooms,messrooms,etc.whennotrequired