TES (Thermo Efficiency System)

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2 TES (Thermo Efficiency System) Theoretical background Confirmation of potential Application possibilities Future application possibilities

3 Turbocharging Efficiency Turbocharger/Turbocharging efficiency Efficiency in % Available for other use Turbocharger efficiency available max. Turbocharger efficiency available min. Turbocharging efficiency required Year

4 TES Applications Turbine Outlet Temperature 320 MCR TCS / Engine Power [ % ] Turbocharging Efficiency [ % ] 0

5 TES Applications Relative Compressor Relative Turbine Area Turbocharging Efficiency [ % ] 65

6 TES Calculations (CFD Heat Load) Reference TES Application Piston top surface at 100% engine load

7 TES Calculations (CFD Heat Load) Reference TES Application Liner surface at 100% engine load

8 TES Calculations Summarising calculation results for TES engine Increased heat load on exhaust valve and piston Slightly increased heat load on liner and cover Approx. 2 g/kwh increased SFOC due to reduced purity at compression start Nearly unchanged NO x emission

9 TES (Thermo Efficiency System) Theoretical background Confirmation of potential Application possibilities Future application possibilities

10 Fore End Bypass From the Exhaust Receiver to the Scavenge Air Receiver

11 TES: Combustion Chamber Temperature Measured Mean Temperatures: 10K98MC Mitsui % Reference test 100% TES TES: 590 C Std.: 570 C TES: 222 C Std.: 218 C TES: 432 C Std.: 414 C TES: 417 C Std.: 388 C

12 Measured Influence on SFOC SFOC g/kwh Reference TES Load in % All data are corrected to ISO and reference p max

13 Measured Influence on Specific NO X Emissions NO x g/kwh Reference TES Load in % All data are corrected to ISO and reference p max

14 TES (Thermo Efficiency System) Theoretical background Confirmation of potential Application possibilities Future application possibilities

15 Heat Balance at 100% SMCR for Main Engine 12K98ME/MC without TES Shaft power output 49.3% Lubricating oil cooler 2.9% 12K98ME/MC Standard engine version SMCR : 68,640 kw at 94.0 r/min Jacket water cooler 5.2% ISO ambient reference conditions Exhaust gas 25.5% Air cooler 16.5% Fuel 100% (171 g/kwh) Heat radiation 0.6% Fig. 1

16 Heat Balance at 100% SMCR for Main Engine 12K98ME/MC with TES Total power output 54.2% (54.8%) Shaft power output 49.3% El. power production of TES 4.9% (5.5%) Gain = 9.9% (11.2%) 12K98ME/MC with TES SMCR : 68,640 kw at 94.0 r/min Lubricating oil cooler 2.9% Jacket water cooler 5.2% ISO ambient reference conditions TES : Single pressure (Dual pressure) Exhaust gas and condenser 22.9% (22.3%) Air cooler 14.2% Fuel 100% (171 g/kwh) Heat radiation 0.6% Fig. 1

17 Power Concept for Thermo Efficiency System Exh. gas boiler Generator, AC alternator Reduction gearbox Steam turbine Reduction gear with overspeed clutch Emergency generator Steam for heating services LP Superheated steam HP HP LP Exh. gas turbine Switchboard Diesel generators Turbochargers Shaft motor/ generator Exhaust gas receiver Main engine

18 Thermo Efficiency System (TES) Reduction gear with overspeed clutch Steam turbine Generator, AC alternator Exh. gas turbine Reduction gearbox Approx. dimensions referring to a 12K98ME/MC: Length: 10 meters Breadth: 3.5 meters Weight: 58 tons Arrangement as proposed by Peter Brotherhood Ltd.

19 PTG/PT Series with Expected Max. Shaft Power Output PTG based on NR PTG kw PTG kw PTG26 1,120 kw PT based on TCR PT kw PT kw PT kw PT kw PT20 1,000 kw PT22 1,800 kw PT based on TCA PT44 PT55 PT66 2,300 kw 3,200 kw 4,500 kw

20 Power Turbine Generator Alternator asynchronous type Planetary Gear Power Turbine

21 CODAG Combination of Diesel and Gasturbine Status Main Engine Exhaust Gas Line ICS Line Power Turbine Gear Boxes Aux. Engine

22 TES (Thermo Efficiency System) Theoretical background Confirmation of potential Application possibilities Future application possibilities

23 1 Turbocharger Boiler 2 Cooler Auxiliary blower Generator Engine Power Turbine

24 Case 1 LP pressure [bar a] LP super heat temperature [ C] HP pressure [bar a] HP super heat temperature [ C] Heat extraction in Boiler 1 [kw] Heat extraction in Boiler 2 [kw] Power turbine [kw] Steam turbine [kw] Total electrical power [kw] Power rel. to main engine [%]

25 2 Turbocharger Boiler 2 Cooler Auxiliary blower Boiler 1 Engine Power Turbine Generator

26 Case 1 Case 2 LP pressure [bar a] LP super heat temperature [ C] HP pressure [bar a] HP super heat temperature [ C] Heat extraction in Boiler 1 [kw] Heat extraction in Boiler 2 [kw] Power turbine [kw] Steam turbine [kw] Total electrical power [kw] Power rel. to main engine [%]

27 3 Turbocharger Boiler 2 SAM Auxiliary blower Boiler 1 Generator Engine Power Turbine

28 Case 1 Case 2 Case 3 LP pressure [bar a] LP super heat temperature [ C] HP pressure [bar a] HP super heat temperature [ C] Heat extraction in Boiler 1 [kw] Heat extraction in Boiler 2 [kw] Power turbine [kw] Steam turbine [kw] Total electrical power [kw] Power rel. to main engine [%]

29 4 Turbocharger Boiler 2 Cooler Auxiliary blower Boiler 1 Generator Engine Power Turbine

30 Case 1 Case 2 Case 3 Case 4 LP pressure [bar a] LP super heat temperature [ C] HP pressure [bar a] 19.5 HP super heat temperature [ C] 440 Heat extraction in Boiler 1 [kw] Heat extraction in Boiler 2 [kw] Power turbine [kw] Steam turbine [kw] Total electrical power [kw] Power rel. to main engine [%]

31 5 Turbocharger Boiler 2 SAM Auxiliary blower Boiler 1 Generator Engine Power Turbine

32 Case 1 Case 2 Case 3 Case 4 Case 5 LP pressure [bar a] LP super heat temperature [ C] HP pressure [bar a] HP super heat temperature [ C] Heat extraction in Boiler 1 [kw] Heat extraction in Boiler 2 [kw] Power turbine [kw] Steam turbine [kw] Total electrical power [kw] Power rel. to main engine [%]

33 Conclusion Significant increase in efficiency is possible. Reliability of the engine itself is unchanged. Shipyards are reluctant to introduce due to high order volume. Payback time is typical 56 years with current oil prices. TES must be considered at an early stage of a project.

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