First Marine Application for New Generation TCS-PTG

Monday, December 19, 2011
Reederei Horst Zeppenfeld orders two TCS-PTG units for 2 × 4,700 TEU container vessels.

MAN Diesel & Turbo received an order for two Turbo Compound Systems including Power Turbine and Generator (TCS-PTG) from Samjin Shipbuilding in Weihai, China. The TCS-PTGs will be employed aboard two 4,700 TEU container vessels currently under construction, operated by German shipowner Reederei Horst Zeppenfeld, each powered by individual MAN B&W 6S80ME-C9.2 low-speed engines. The order includes an option for two extra vessels. The order represents the first such instance for a marine application for MAN Diesel & Turbo’s new generation of TCS-PTG after previous applications at stationary power plants in London and Panama. Along with the 2 + 2 × TCS-PTG20s, MAN Diesel & Turbo will supply 2 + 2 × TCA88 turbochargers at a total project volume of some 4 million euro. Delivery is scheduled to begin by the end of 2012. Through using the TCS-PTG units, Zeppenfeld will not only save fuel but will also reduce the operating costs of their gensets as these can be run on part-load when the TCS-PTG unit takes over. During sea passage, if no reefer containers are carried, the TCS-PTG may even fully replace a genset. In many cases, the installation of a TCS-PTG unit also allows the user to minimise the installed genset power output and to reduce corresponding investment costs accordingly. MAN Diesel & Turbo sees a growing potential for waste-heat-recovery systems such as the TCS-PTG, which can recover up to 5% of the energy from a main-engine’s exhaust gases. As an alternative, the company offers an STG (Steam Turbine and  Generator) system that recovers energy from an exhaust-gas steam boiler. MAN Diesel & Turbo also offers a solution in the form of the MARC_HRSTM system, which is a combination of STG and TCS-PTG that recovers up to 10% of the energy from a main-engine’s waste heat.

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