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www.GREEN4SEA.com : Fostering Environmental Excellence & Sustainable Shipping Athens 22 APR 2015
GREEN4SEA
An SQE4SEA Project 2015 GREEN4SEA Forum
1
Fostering Environmental Excellence & Sustainable Shipping
Session 1 : Sustainable Shipping
Session 2 : Energy Efficiency
Session 3 : Fuel Options
Session 4 : Ballast Water Management
www.GREEN4SEA.com : Fostering Environmental Excellence & Sustainable Shipping Athens 22 APR 2015
GREEN4SEA
An SQE4SEA Project 2015 GREEN4SEA Forum
Session 3 : Fuel Options [ 14:00 – 15:45 ]
1. Dr John Kokarakis, VP Engineering, Bureau Veritas - Future Fuel Options
2. Joris van Kreij, Global Sales Manager - LNG Ship Fueling Solutions, Chart Industries - LNG ship fuel systems Update
3. Maria Kyratsoudi, FOBAS Senior Specialist GEMA, Hellenic Lloyd's SA - The 2020 challenge; Scrubber considerations
4. Kai Låtun, VP Sales & Marketing, Yara Marine Technologies AS – SOx scrubbers; a profitable investment
5. Gilberto Rubini, Global Sales Manager, ECOSPRAY Technology srl – How to comply with emissions limits and meeting shipowners' operational need
6. Marco Dierico, Marine Business Development Manager, Europe, DuPont/BELCO - Scrubber systems: technology overview, benefits and market trends.
30 min Panel Discussion & Questions open to the floor
2
LNG Ship Fuel Solutions Update on tank insulation alternatives
GREEN4SEA
Athens, 22 April 2015
Joris van Kreij
Global Sales Manager
LNG Ship Fuel Solutions [email protected]
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Contents
• Why run on LNG?
• Typical LNG ship fuel solution
• Sources of heat leak
• Importance of high grade insulation of LNG tanks
• Types of insulation
• Conclusion
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Why run on LNG?
• To comply with current and future emission
regulations
• Clean operation of engines
• Fuel cost savings
• Low noise operation
• Eliminates risk of oil spills
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Typical LNG ship fuel solution
A) Vacuum insulated tanks
B) Coldbox (evaporation equipment, plumbing, instrumentation)
C) Water-glycol circuit
D) Bunker stations
E) Vacuum insulated bunkering lines - vapor return line
F) Engine lines (gas supply)
G) Gas Control System – Gas Safety System © 2014 Chart Industries, Inc.
Confidential and Proprietary
Typical ship fuel tank design
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Coldbox
• Tank penetrations
• Valves
• LNG evaporator
• Instrumentation
• Controls
Conical support Straps
of inner vessel Outside coldbox: inherently
gas safe machinery space
Inside: ESD protected
machinery space
Fixed support Sliding support
LNG -163⁰C
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Typical ship fuel tank design
Typical ship fuel tank design
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Heat leak to the inner vessel
© 2014 Chart Industries, Inc.
Confidential and Proprietary
LNG -163⁰C
Wall (insulation)
Piping
Supports
Importance of high grade insulation
Tank holding time = time before pressure relieve valve opens
Holding time depends on:
• Level of LNG in the tank
• Temperature (pressure) of received LNG
• Tank maximum allowable working pressure (MAWP)
• Heat ingress → tank design and mainly insulation!
High grade insulation translates into: operational flexibility
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Types of insulation
• Mechanical insulation (PUR)
• Vacuum insulation – Perlite
• Vacuum insulation – Multi layer
insulation (Superinsulation)
Mechanical insulation 10-15x
worse than perlite
Superinsulation 2-3x better than
perlite (but is actually less due
to support heatleak)
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Insulation R value
Fiberglass without vacuum 6.4
Foam without vacuum 8.3
Powder without vacuum 6.2
Vacuum 25
Evacuated Perlite 60
Superinsulation 170
Cryogenic Insulations for the Distribution of Liquefied
Gases. H. M. Lutgen, IOMA 1053
Vacuum integrity
Gettering system in annular space
• Molecular sieve – absorbs remaining/released gas
• Hydrogen converter (catalyst) – forms water that can
be taken by the seive
Result: higher vacuum level for
longer period of time.
Tanks can be used for decades
without maintenance on vacuum.
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Mechanical insulation
Cons:
• Much higher heat leak compared to vacuum.
• May need replacement due to different thermal contraction and subsequent cracking.
• Mechanically insulated tanks are difficult to insulate from the supports.
• No secondary containment.
• More space required.
Pros:
• Lower initial investment than vacuum insulation
NB: Perlite with lost vacuum is equivalent to PUR in terms of heatleak.
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Space requirement for a 200m3 tank
© 2014 Chart Industries, Inc.
Confidential and Proprietary
5.0 m
~6.6 m
14.5 m
~16.0 m
Vacuum insulation:
Foam insulation:
200m3
200m3
Conclusion:
• High grade vacuum insulation translates into:
operational flexibility because of the elongated
holding time
• The double walled tank provides a secondary barrier
(leakage/fire protection)
• There are two typically used vacuum insulation
technologies: Perlite and Multi Layer Insulation.
Both have their pros and cons.
• Always select a supplier with extensive experience in
building vacuum insulated tanks.
© 2014 Chart Industries, Inc.
Confidential and Proprietary
Thank you for your attention
© 2015 Chart Industries, Inc.
Confidential and Proprietary
Joris van Kreij [email protected]
ww.chartindustries.com
