imp-mathew_ship_energy_audit.pdf

DNV GL © 24-04-2015 SAFER, SMARTER, GREENER
DNV GL ©
24-04-2015
Seeba Ann Mathew
Ship Energy Audit
1
- Do the least

DNV GL © 24-04-2015
The real motivation ?
2

DNV GL © 24-04-2015
The real motivation !
3

DNV GL © 24-04-2015
Survey results:
Why strive for an energy efficient operation?
4
Regulations – Money - Reputation – Sleep
Low
motivation
High
motivation

DNV GL © 24-04-2015
Survey results:
- So what is stopping us…
5
Lack of Money or Knowledge (certainty)

DNV GL © 24-04-2015
A number of fuel efficient measures are available
6
However shipowners for various reasons may or may not be able to climb
up this entire ladder, be it retrofit or new build ships
Hull
&
propeller
cleaning
Hull
retrofitting
Optimized
voyage
planning
Propeller
retro-fitting
Weather
routing
Retro-fitting
of
energy
eff
devices
Hull
coating
Awareness
&/or
incentive
activities
Energy
performance
monitoring
Shore
power
Slow
steaming
Establishing
energy
responsible
Port
optimization
Auxiliary
engine
optimization
Engine
de-rating
Turbocharger
cut
out
Electrically
controlled
engines
Optimised
hull
design
and
Build
Quality
?

DNV GL © 24-04-2015
Improvement potential (theory)
Breakdown of the 15% saving potential
(4,8%) Shipowner controlled,
but with some cost
(5,8%) Charterer controlled
at no or low cost
(4,6%) Shipowner
controlled at no or low cost
7

DNV GL © 24-04-2015
Reported data:
In Transit – Overall fuel decrease of 16.2%
0.04
0.045
0.05
0.055
0.06
0.065
0.07
0.075
0.08
17/ mar. 6/ mai. 25/ jun. 14/ aug. 3/ okt. 22/ nov. 11/ jan. 2/ mar.
Rolling
average
consumption
[ton/nm]
Date
Rolling average MDO cons. per nm [tonn/nm] Expon. (Rolling average MDO cons. per nm [tonn/nm])
8
Measures
Logistics planning
Speed
management
Propeller polishing
Trim and draft
optimization
Enhanced focus on
communication
with crew and
charterer

DNV GL © 24-04-2015
Reported data:
Offshore – Overall fuel decrease of 5.3%
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Rolling
average
consumption
[ton/hour]
Date
Rolling average MDO cons. per hour [ton/hour] Expon. (Rolling average MDO cons. per hour [ton/hour])
9
Measures
DP-operation
LED lighting
Enhanced focus on
communication
with crew and
charterer

DNV GL © 24-04-2015
Reported data:
In Port – Overall fuel decrease of 7.8%
10
0.08
0.09
0.1
0.11
0.12
0.13
0.14
0.15
0.16
Rolling
average
consumption
[ton/hour]
Date
Rolling average MDO cons. per hour [tonn/hour] Expon. (Rolling average MDO cons. per hour [tonn/hour])
Measures
LED lighting
Enhanced focus
on communication
with crew and
charterer

DNV GL © 24-04-2015
Identify your cost drivers
Repair and
Maintenance
Planned
Maintenance
Time spent
on planned
maintenance
(overtime)
Spares used
Service
supplier cost
70 - 90 %
Damages*
Replacement
cost of
equipment
Repair team
cost
Deductible
from
insurance
Consequence
cost
5 - 20 %
Unplanned
Maintenance
Time spent on
unplanned
maintenance
(overtime)
Spares used
Service supplier
cost
5 - 20%
Optimising maintenance activities give cost savings of 10 ~ 15%
*Typical cost picture tanker
Moore Stephens

DNV GL © 24-04-2015
CO2, SOx, ballast water recycling are in public
discussion, but in the end it’s energy that really matters
• Emissions to air
- CO2
- SOx
- NOx
- Particulate matter
- Ozone depleting
substances
• Emissions to water
- Ballast water
- Bilge water
- Wastewater (sewage,
shower/kitchen, holds)
- Coatings/Anti fouling
• Waste emissions
- Cargo residues
- Oil sludge
• Noise emissions
- Outside/inside
• Ship recycling
- Pollutants/IHM1
Relevant dimensions Vessel value driver
1 IHM = inventory of hazardous materials
Already implemented
To be implemented or
tightening expected
Regulation expected
Regulatory status Market demand

DNV GL © 24-04-2015
Today’s vessels will have to compete against vessels that are 30%
more fuel efficient in the future
13
Transportation costs, USD/TEU/1000 NM
CONCEPTUAL
1. IMO with respect to required EEDI improvement (MEPC 60/4/14)
2014 2025
Profitable
vessels
Unemployed
vessels
Transport capacity (TEU)
Profitable
vessels
Unemployed
vessels
Transport capacity (TEU)
Market
price
Demand
Vessel A
Market
price
Demand
Vessel A
Efficiency in-
crease of new
vessels ca. 2,7%
p.a. (=30% in
13 years)1

DNV GL © 24-04-2015
Ranking of the selected vessel with its peer group is given before
and after applying retrofitting measures
World container fleet based on USD/1,000 TEU Nautical Miles
+/-15% TEU
12.0%
10.0%
8.0%
6.0%
4.0%
2.0%
0.0%
-2.0%
-4.0%
TEU capacity
Ranking before retrofitting (50 of 79)
10.0%
12.0%
8.0%
4.0%
6.0%
2.0%
0.0%
-2.0%
-4.0%
TEU capacity
Ranking after retrofitting (14 of 79)
Peer group size of
vessels with +/-15%
TEU capacity is
compared to vessels
performance before
and after retrofitting
Peer group size can
be set individually
Ranking is based on
all vessels sailing at
he given operating
profile
Vessel before
retrofit Vessel after
retrofit
Source: DNV GL
14
SAMPLE

DNV GL © 24-04-2015
Consumers
Consumers
• Hull condition
• Propeller condition
• Autopilot rudder
• Trim and draft
• Cargo capacity
• Hull condition
• Trim and draft
• Cargo capacity
Ship performance
Ship performance
Management system (enabler)
Management system (enabler)
• Fleet planning and schedule assessment
• Chartering/booking
• Voyage execution
• Speed Management
• Port efficiency
• Trim optimization
• Port efficiency
• Trim optimization
Voyage management
Voyage management
Main and AUX engines
• Fuel quality and quantity
• Bunkering procedures
• Fuel sampling
• Inventory management
• Supplier management
• Fuel sampling
Fuel management
Fuel management
Energy management can be conducted on technical and
management dimensions
15
Technical Management
• Main engine efficiency
• Auxiliary engine efficiency
(including generators)
• Dual fuel preparation
• Cargo handling operations
• Ventilation, HVAC, cooling/
freezing, lights,
• Thruster operations
• Climate control
• Miscellaneous consumers
• Organizational setup, roles,
responsibilities
• Policy, process/ procedures
• Communication and training
• Reporting, review and
follow-up

DNV GL © 24-04-2015
Implementing energy management generates sustainable savings
16
Consumers
Consumers
• Hull condition
• Trim and draft
• Cargo capacity
• Hull condition
• Trim and draft
• Cargo capacity
Ship performance
Ship performance
Management system
Management system
• Port efficiency
• Cargo optimization
• Port efficiency
• Cargo optimization
Voyage management
Voyage management
• Fuel sampling
• Fuel sampling
Fuel management
Fuel management
Technical Managerial
• Main engine efficiency
• Auxiliary engine efficiency
(including generators)
• Cargo handling operations
• Ventilation, HVAC, cooling/
freezing, lights,
• Thruster operations
• Climate control
• Miscellaneous consumers
• Organizational setup, roles,
responsibilities
• Policy, process/ procedures
• Communication and training
• Reporting, review and
follow-up
• 2 – 7 % bunker savings
• 3 – 24 months payback
• 2- 7 % bunker savings
• 1- 24 months payback
• 12+ months payback
• 1 – 12 months payback
• Enabler/ anchoring of achieved
savings
• 3months payback
• 0,5 – 1% bunker savings
• 1 - 12 months payback

DNV GL © 24-04-2015
Ship Energy Audit (SEA)
Objective:
Optimisation of auxiliary machinery
Audit Scope:
Perform tailored ship energy audits on high priority vessels.
SEA includes:
a) Review of current fuel use onboard
b) Onboard survey, observation of normal operations, interviews with crew,
measurement of ME and AuxE performance, sampling of fuel
c) Comparison with design specifications and identification of specific fuel and CO2
reduction opportunities
18

DNV GL © 24-04-2015
Onboard audit scope
19
Energy Awareness
• Interview with ship staff with
the objective of assessing the
implementation of procedures
and the general level of
awareness related to energy
efficiency
• Witnessing of normal
operation of vessel during
different modes and
documentation of overall
impressions during voyage
• Assessment of current
performance reporting if fit for
purpose
Primary consumers
• Performance test and
calculation of SFOC of ME and
AEs at 3-4 different loads,
compared with sea trial and
ship test
• Evaluation of AE usage at
different operating modes
• Performance test of boiler by
measuring steam mass flow,
temperature and pressure
compared to fuel usage
Secondary consumers
• Comparison of electrical
powering table with readings
from Power Management
System, Any deviation will be
investigated
• Operational assessment of key
consumers e.g. temperature in
settling tank, use of
separators, pressure in
starting air receivers, use of
ER fans, recirculation of HT
cooling water across cooler
etc.
Other consumers
• Other ancillary consumers
• Performance testing of the
following will also be carried
out: all pumps, heat
exchangers, waste heat
recovery systems, exhaust gas
economiser, air compressors,
boilers, cargo handling,
ventilators, cooling systems
Cargo discharge
performance
• Interview with ship staff with
the objective of assessing the
implementation of procedures
and the general level of
awareness related to energy
efficiency
• Witnessing of normal
operation of vessel during
different modes and
documentation of overall
impressions during voyage
• Assessment of current
performance reporting if fit for
purpose
Ship performance
• Measurement of hull and
propeller performance at
different speeds which include
alteration of the ship’s course
for a short period of time
during data collection

DNV GL © 24-04-2015
SAFER, SMARTER, GREENER
www.dnvgl.com
Thank you!
21
Seeba Ann Mathew
Seeba.Ann.Mathew@dnvgl.com
+65 9837 5353

imp-mathew_ship_energy_audit.pdf

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