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    Model-based assessment of energy-efficiency, dependability, and cost-effectiveness of waste heat recovery systems onboard ship

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    Publication date
    2018-06-01
    Author
    Lampe, J.
    Rüde, E.
    Papadopoulus, Y.
    Kabir, Sohag
    Keyword
    Availability
    Economic assessment
    Energy efficiency
    Energy flow simulation
    Green shipping
    Reliability
    Rights
    © 2018 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Technological systems are not merely designed with a narrow function in mind. Good designs typically aim at reducing operational costs, e.g. through achieving high energy efficiency and improved dependability (i.e. reliability, availability and maintainability). When there is a choice of alternative design options that perform the same function, it makes sense to compare alternatives so that the variant that minimises operational costs can be selected. In this paper, we examine this issue in the context of the design of Waste Heat Recovery Systems (WHRS) for main engines of large commercial freight vessels. We propose a method that can predict the operational cost of a WHRS via thermodynamic analysis which shows costs related to energy utilisation, and dependability analysis which shows costs related to system unavailability and repair. Our approach builds on recent advances in thermodynamic simulation and compositional dependability analysis techniques. It is a model-based approach, and allows reuse of component libraries, and a high degree of automation which simplify application of the method. Our case study shows that alternative designs can be explored in fast iterations of this method, and that this facilitates the evidence-based selection of a design that minimises operational costs.
    URI
    http://hdl.handle.net/10454/18001
    Version
    Accepted manuscript
    Citation
    Lampe J, Rüde E, Papadopoulus Y et al (2018) Model-based assessment of energy-efficiency, dependability, and cost-effectiveness of waste heat recovery systems onboard ship. Ocean Engineering. 157: 234-250.
    Link to publisher’s version
    https://doi.org/10.1016/j.oceaneng.2018.03.062
    Type
    Article
    Collections
    Engineering and Informatics Publications

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