Development, experimental testing and techno-economic assessment of a fully automated marine organic rankine cycle prototype for jacket cooling water heat recovery

Platon Pallis, Efstratios Varvagiannis, Konstantinos Braimakis, Tryfonas Roumpedakis, Aris - Dimitrios Leontaritis and Sotirios Karellas

Energy, 2021, vol. 228, issue C

Abstract: The final development stages and continuous operation testing of a micro-scale Organic Rankine Cycle (ORC) prototype running with R134a are presented. The prototype was designed to produce electricity by recovering heat from the hot jacket cooling water of a marine diesel engine at a temperature of 85 °C, using seawater as its heat sink. The study includes an analysis of the safety, dimensional, logistical and classification considerations that had to be taken into account considering the installation of the prototype in the engine room of a real newly built cruise ship. Furthermore, a special focus is given on the control system and the operation strategy of the prototype, which were developed to ensure its stand-alone, fully automated operation. The 24-h and 48-h continuous operation tests showcased the prototype’s capability of stable operation and robust response to load changes. Finally, the study includes a techno-economic assessment study of an upscaled prototype version, which highlighted the strong influence of the seawater temperature on its economic performance. In particular, in the base case scenario, the depreciated payback period was found equal to 11.54 and 10.31 years in the Mediterranean and the North Sea, respectively.

Keywords: ORC; Marine diesel engine; WHR; Prototype; Experimental (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:228:y:2021:i:c:s0360544221008458

DOI: 10.1016/j.energy.2021.120596

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