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

Lampe, Jörg; Rüde, Erich; Papadopoulos, Yiannis; Kabir, Sohag

Authors

Jörg Lampe

Erich Rüde

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.

Journal Article Type Article
Publication Date 2018-06
Journal Ocean Engineering
Print ISSN 0029-8018
Publisher Elsevier Masson
Peer Reviewed Peer Reviewed
Volume 157
Pages 234-250
DOI https://doi.org/10.1016/j.oceaneng.2018.03.062
Keywords Environmental Engineering; Ocean Engineering
Publisher URL https://www.sciencedirect.com/science/article/pii/S0029801818303408
Copyright Statement © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Additional Information This article is maintained by: Elsevier; Article Title: Model-based assessment of energy-efficiency, dependability, and cost-effectiveness of waste heat recovery systems onboard ship; Journal Title: Ocean Engineering; CrossRef DOI link to publisher maintained version: http://dx.doi.org/10.1016/j.oceaneng.2018.03.062; Content Type: article; Copyright: © 2018 Elsevier Ltd. All rights reserved.

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Copyright Statement
© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/



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