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PRIME Performance Engine Optimisation Best Practice

Henrik Birkegård Executive Assistant

Marine Low Speed, R&D and Engineering Diesel House - 26. Nov, 2015

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Agenda

1 Thermal Engine Efficiency

2 SFOC optimisation

3 Derating

4 Engine Gas By Pas

5 Turbo Charger Cut-out

6 Thermal System Efficiency

7 G-type Engines

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Thermal Efficiency Diesel Working Cycle

Scavenge air pressure & temp.

Injection timing & volume

Exh. Valve timing & volume

Material heat load

Proces Mechanical

Material strength

Compression ratio

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Thermal Efficiency Diesel Working Cycle

MAN B&W G95ME-C9.5 MEP = 22 bar n = 80 rpm Pmax = 180 bar

Ideal heat release

Ideal adiabatic process

Snak m. NK/SFM

1

1

2

3

4

2

3

4

Compression

Injection

Expansion

Exhaust/ Scavenging

Ideal scavenging

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Standard Rating Container ship – 11S90ME-C9.2-TII

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Derating (Reduced MEP) Container ship – 11S90ME-C9.2-TII

Derating (Reduce MEP)

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SFOC Optimisation Methods Exhaust Gas Bypass

6S80ME-C9.4 Derated SMCR: 25,080 kW x 78 r/min

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SFOC Optimisation (EGB) Container ship – 11S90ME-C9.2-TII

Exhaust Gas By-pass (EGB)

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SFOC Optimisation (LL - EGB) Container ship – 11S90ME-C9.2-TII

Exhaust Gas By-pass (EGB)

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Turbocharger Cut-out Retrofit solution

MAN Diesel & Turbo Swing Gate Valve

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Thermal Efficiency SFOC and NOx

Turbocharging: Before T/C : MEP ~ 6-7 bar, Pscav ~ 1.05-1.1 bar with Roots blowers Today : MEP ~ 22 bar , Pscav ~ 3.8-4 bar with turbochargers

∆SFOC = ∆CO2 : -25 %

Jacket water cooling: 4.8%

Standard Engine

Charge air cooling: 17.8%

Lub. oil cooling: 3.2%

Radiation: 0.6%

Exh..gas 25.1% Mechanical

output: 48.5%

Energy in fuel: 100%

WHR

WHR

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• Low and part load engine optimisation

• Reduced auxiliary power consumption

• In-service tuning of engine

MAN Diesel & Turbo Reducing Fuel consumption and CO2 Emission

Influencing EEDI • Ship speed • Hull and propeller optimisation • Engine thermal efficiency • Overall system thermal efficiency,

viz. WHR + ORC

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Green series of G-ME engines

Longer Stroke

Lower rpm

Larger Propeller

Higher Efficiency

Fuel and CO2 Savings

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Propeller Efficiency VLCC

NBC-LEE 3339513.2014.05.02

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G-type Engines L, K and S types replaced

MW ordered per year

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Engine Optimisation Best Practice Wrap -up

New building

Fully rating (std.) Derating

Engine Gas By-pass

Retrofit

Turbo Charger Cut-out

WHR

Aux. systems

Ship Speed

Hull & Propeller optimisation

Engine Engine system Ship system

Energy Efficiency Design Index

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All data provided in this document is non-binding. This data serves informational purposes only and is especially not guaranteed in any way. Depending on the subsequent specific individual projects, the relevant data may be subject to changes and will be assessed and determined individually for each project. This will depend on the particular characteristics of each individual project, especially specific site and operational conditions.

Disclaimer

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Henrik Birkegård MAN Diesel & Turbo Denmark Executive Assistant to Vice Presidents Engineering and Research & Development Teglholmsgade 41 2450 København SV Phone: +45 3385 2898 Henrik.Birkegaard@man.eu www.mandieselturbo.com

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