Green House Bureau Veritas

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How to create an useful SEEMP?

CLIA Leadership Forum

Miami 15th November 2012


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The SEEMP is a ship environmental performance management tool :

It should be developed by the owner in accordance with the IMO Guidelines*adopted at MEPC 63 in March 2012 (actually as of MEPC.1/ Circ.683).

There are four steps to consider:

Ship Energy Efficiency Management Plan

Reference MSC.203(62) New chapter 4 to MARPOL Annex VI Reg.22

Entry into force 01/01/2013 (new ships)by the first IAPP intermediate or renewal

survey, whichever is first, on or after 01/01/2013 for existing shipsApplicable to all new & existing ships 400gt

Planning

which determines the status of ship energyusage and the expected improvements of shipenergy efficiency

Implementation

which includes the development of theprocedures for energy management and thedefinition of the tasks to be performed

Self Evaluation & Improvement

to evaluate the effectiveness of the plannedmeasures and of their implementation and toimprove the SEEMP

Monitoring & Measurement

which provides a quantitative indicator of theship energy effiency

* Resolution MEPC.213(63) 2012 Guidelines for the Development of a SEEMP, Adopted on 2 March 2012.


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Energy Saving Measures Ranking

Order of magnitude

Saving > 20%

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Example & Content of a SEEMP

A SEEMP should contain the following information


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International Energy Efficiency Certificate (IEEC)

Owner can request BV to carry out aSEEMP review and issue an IEE SoC

The IEE SoC is an evidence that theSEEMP has been developed taking into

account guidelines adopted by theOrganization, in compliance with IMOMEPC.203(62) Regulation 22.2.

The IEE SoC will allow any ship above 400

GT to obtain the IEE Certificate as soon asthe required verification survey on-boardhas been completed, when theamendments to MARPOL VI will apply tothe vessel

SEEMP Review - International Energy Efficiency Statement of Compliance


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Identifying potential fuel savings


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Voluntary approval of the Ship Energy Efficiency Management Planof individual ships:

The Owner provides the SEEMP for initial review and approval, as wellas future revisions of the plan. The Owner will also send additionaldocuments for information.

It is proposed to evaluate the different possible measures initially

suggested by the Owner and the order of magnitude of the possiblegains by building an energy flow model of the ship with a simulationtool and using it to simulate the effect of the proposed measures inoperating conditions defined by the Owner. It is also checked that theSEEMP is effectively implemented onboard the ships.

How to go beyond the statutory requirements


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Methodology an holistic approach

Establishing an Energy Audits Install instrumentation on fuel flow

and shaft line power

Use of Energy simulating tools

Use of CFD calculations tools

Holistic approach: Use of EnergyManagement System standard


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Energy Audit

1. Definition of data to be measured for the energy performance assessment

* The data are to include at least the input parameters used to calculate the performance indicatorsused within the scope of the SEEMP

* The data collected/measured should include at least the following over a 6-month period

fuel consumption per fuel type (HFO, DO)/ fuel quality (lower heating value, density) of the fuelconsumed / cargo transported and distance (including under ballast)

2. List of fuel consumers on-board : Main engine / propulsion, Aux. engines, Aux. Boilers

3. List of major electrical power consumers : rotating machinery, lighting system

4. List of steam consumers

5. Procedures and devices to measure the data

Overall fuel/electrical power/steam consumption / fuel/electrical power consumption/steam perconsumer or per consumers category, if measured / measuring devices and procedures to calibratethe devices / measurement periodicity / record-keeping procedures / person responsible for measuringand keeping records

Verification on-board by a Surveyor

Sampling verification that the procedures to measure the data are properly implemented and that themeasuring devices are properly maintained and/or calibrated.

Verification that the Energy Performance Indicators are calculated from the collected data over the last6 months of the ships operations to assess the current energy performance status.


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Instrumentation

Propulsion monitoring

Machinery and Auxiliaries intrumentation

Prop. efficiency


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CFD calculation for potential fuel saving

Description: unsteady CFD

simulations of a rotating propeller

Outputs of the simulations:

Kt, Kq and efficiency of the

propeller in open water

Estimation of cavitation onsetrisks

Example of applications:

Evaluation of propeller

performances

Evaluation Energy Saving Devices

close to propeller


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Loaded tip propeller Twisted rudderCR propeller

ACS

Energy Saving Devices (ESD) Some outputs

Reduction in viscouspressure resistance ~2%

Fins in front of propellerDucktail

Ship length increased

Reduction in wave resistance2~5%

Improved efficiency 6~12% Reduction in viscouspressure resistance ~2%

Recovering of kinetic energydue to the rotational flow

SSPA 5~10%


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Use of Energy Simulating Tools for Ship EnergyModelling


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Purposes of such tool are:

Create a comprehensive energy model of a ship

Establish the energy balance and calculate the energy efficiency of the ship

Predict the fuel consumption and emissions (NOx, SOx, CO2)

Simulate and optimize the energy flows with account of the operational profiles

Energy Simulating Softwares

Management Module

ConsumersModule

System 1

Steam

System n

Fresh Water

System 2

Propulsion

Producers

Module

WHR

Main

Engine

Auxiliary

Engine

Boiler

Emissions

Module

NOx

SOx

CO2

Fuel Module

Fuel 1 Fuel 2 Fuel 3

Navigation

ModuleOperational

Profile

Ship speedDay/Night

Summer/Winter

Need EmitProduct

Deliver


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Library Ship modelingExample of

Results

Speed profile

CO2 emissions

Fuel consumption

LibraryShip modeling

Example of Results

Speed profile

CO2 emissions

Fuel consumption

Energy Efficiency Simulating Tools (SEECAT)


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Cruise Vessel Case Study

Verification with sea data and comparisonbetween alternative systems

Main ship characteristics:

Tonnage 153000 GT

Diesel-electric propulsion

2 propulsion lines, 24 MW each

Electrical plant : 6 generating sets

Steam production : 6 exhaust gas recoveryboilers and 2 oil-fired boilers

Fresh water production : 2 distillers (evaporators)and 3 reverse osmosis production units

Cooling installation: 5 chiller plants

Advanced Heat Recovery PlantAHRP

(Co work BV + STX France)


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Timewise definition of:

Ship speed

Fresh water consumption

Type of fuel

Navigation mode

Sea water temperature

Outside air temperature

Main results:

Fuel(s) mass flow and totalconsumption

Mass flow and total emittedmass of CO2, NOx, SOx

Level in fresh water tanks

Case Study Modelling & sea data


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Average DG's specific fuel consumption

0

50

100

150

200

250

300

Cruise 1 Cruise 2 Cruise 3 Cruise 4

g/KWh_elec

Measured

Simulated

Modelling & sea data


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Thermal power balance with AHRP (winter):

Thermal power balance bis

0

5000

10000

15000

20000

25000

30000

35000

40000

45000

0 165Time [h] - non linear

Power[kW]

WHR boilers DG cooling Oil-fired boilers All Consumers All consumers except disti llers

Design alternatives


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Thank you - Any question?

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