【作者】

Stephan Mest,Oswald Loewlein,Dirk Balthasar

【摘要】

论文已在上海2013年CIMAC大会上发表，论文版权归CIMAC所有。 The increase in fuel oil prices, tightening regulations regarding emissions no longer limited to NOx, the public discussion on global warming and requirements of the Energy Efficiency Design Index (EEDI) all clearly ask for an emission reduction. Ac-cording to the EEDI, CO2 emissions will have to be reduced by up to 30% depending on the ship type by 2025. This results in a vast range of applications for waste heat recovery systems in general and the power turbine of MAN Diesel & Turbo in specific. Using standard parts and proven technologies from our turbochargers for taylor made power turbine solutions, MAN Diesel& Turbo is capable of offering cost efficient and reliable solutions at present mainly focused on highly efficient 2-stroke engines. With the help of our power turbines, shipowners and power producers can lower their fuel oil consumption significantly. The application range of the power turbine comprises any mode where excess exhaust gas from the turbocharging system is available. This is especially the case when the 2-stroke engine is charged by highly efficient MAN turbochargers of the TCA series. Current projects show that the turbines are suitable for both stationary and marine applications. The modular arrangement of the power turbine allows for the utilization within full-scale waste heat recovery solutions such as the MARC_HRS system of MAN Diesel & Turbo, as mechanical drive for hydraulic pumps, as drive for power take in to the crankshaft or as standalone units for power generation in the form of turbo compound system with power turbine and generator(TCS-PTG).With the enhanced automation and control system, the stand-alone TCS-PTG on board the vessel is capable of operating in island mode which makes it an alternative to auxiliary gensets. With proven components from MAN TCA and TCR turbochargers, it is possible to provide power turbine solutions ranging from 500kW up to 4MW. The system consists of the turbine itself, with axial and radial type turbines capable of covering a wide flow range, gearbox, generator and an advanced safety and automation that can be adapted to the customers' specifications. Integrated gear solutions result in a compact and robust design. Matching the power turbine with engine requirements results in a superior overall performance of the complete system as regards the reduction of fuel oil consumption. The arrangement of the valves together with the drives as well as the advanced control system with redundant safety features are considered as MAN Diesel&Turbo's core competencies that guarantee a smooth and reliable operation. The convincing technical and commercial concept led to several customer orders. In the course of order processing, the performance of all components and systems has been scrutinized excessively via burner rig and factory acceptance tests. The results are used to further enhance the performance and reliability of the system. By consequently following the building block principle, we exploit internal and external synergies and make sure that our power turbine creates real value added, reasonable amortization periods and a sustainable reduction of the emissions of modern diesel engines. In the paper the design, automation and control philosophy is presented in detail as well as the product portfolio and the test results related to the current customer projects.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

1

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