【作者】

Kalevi Tervo

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。ABSTRACT Large container vessels utilize only about 50 % of the fuel energy content for useful work. The rest of the energy is lost to various kinds of heat losses. Majority of the heat loss is in the exhaust gas in form of thermal and kinetic energy. ABB has developed a Power Turbine Generator (PTG) Waste Heat Recovery System (WHRS) to capture part of the exhaust gas energy and generate electrical power out of the waste heat. The PTG WHRS system can capture about 4 % of the wasted energy, which means that it will increase the overall efficiency of the power plant by 2 % units. The WHRS system has been delivered to 14 container vessels which have about 47 MW main engines. The maximum power output of the PTG system was confirmed at sea trials to be around 1.6 MW as it was designed. The ABB PTG WHRS system can operate in parallel with auxiliary diesel generators, but also in island mode supplying all the electrical power to the whole ship. The PTG system has very low physical inertia and controlling the power turbine speed with a control valve that controls the exhaust gas flow to the PTG bypass line is very slow compared to the dynamics of the electrical network. Therefore the control of the PTG system in island mode is very challenging. The PTG system was developed together with ABB Marine and ABB Turbochargers, but before the pilot project, the full scale tests were not possible to do. The first full scale tests for the actual system could be executed in the last days of the first sea trial of the delivery project. This set a major challenge for the development as it was absolutely necessary that the automation and control works from day one. This paper describes the WHRS system, the basic principles of the control system, as well as the Hardware-In-Loop (HIL) development and test platform that was used to develop the automation and control of the PTG system. Quantifiable results of the improved development, delivery and on-site test process are given. Moreover, the performance of the control system onboard in island and parallel operation is demonstrated showing real measured data from a running implementation. As a result of the development project, the PTG WHRS system has been standardized so that the delivery of similar systems is very efficient.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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