Download - Green House Bureau Veritas
-
8/10/2019 Green House Bureau Veritas
1/21
How to create an useful SEEMP?
CLIA Leadership Forum
Miami 15th November 2012
-
8/10/2019 Green House Bureau Veritas
2/21
2
-
8/10/2019 Green House Bureau Veritas
3/21
3
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.
-
8/10/2019 Green House Bureau Veritas
4/21
4
Energy Saving Measures Ranking
Order of magnitude
Saving > 20%
10
-
8/10/2019 Green House Bureau Veritas
5/21
5
Example & Content of a SEEMP
A SEEMP should contain the following information
-
8/10/2019 Green House Bureau Veritas
6/21
6
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
-
8/10/2019 Green House Bureau Veritas
7/21
Identifying potential fuel savings
-
8/10/2019 Green House Bureau Veritas
8/218
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
-
8/10/2019 Green House Bureau Veritas
9/219
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
-
8/10/2019 Green House Bureau Veritas
10/2110
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.
-
8/10/2019 Green House Bureau Veritas
11/2111
Instrumentation
Propulsion monitoring
Machinery and Auxiliaries intrumentation
Prop. efficiency
-
8/10/2019 Green House Bureau Veritas
12/2112
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
-
8/10/2019 Green House Bureau Veritas
13/2113
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%
-
8/10/2019 Green House Bureau Veritas
14/21
Use of Energy Simulating Tools for Ship EnergyModelling
-
8/10/2019 Green House Bureau Veritas
15/2115
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
-
8/10/2019 Green House Bureau Veritas
16/2116Saturday,
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)
-
8/10/2019 Green House Bureau Veritas
17/2117
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)
-
8/10/2019 Green House Bureau Veritas
18/2118
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
-
8/10/2019 Green House Bureau Veritas
19/2119
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
-
8/10/2019 Green House Bureau Veritas
20/2120
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
-
8/10/2019 Green House Bureau Veritas
21/21
21
Thank you - Any question?