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Parametric study and techno-economic analysis of a novel integration between thermoelectric generator and organic Rankine cycle onboard passenger ship
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Parametric study and techno-economic analysis of a novel integration between thermoelectric generator and organic Rankine cycle onboard passenger ship
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Journal Article
Parametric study and techno-economic analysis of a novel integration between thermoelectric generator and organic Rankine cycle onboard passenger ship
2024
Overview
The International Maritime Organization has set targets for reducing greenhouse gas emissions from ships. Thus, it is imperative to investigate novel technologies that have the potential to achieve these targets and reduce emissions in the short and long term. Waste heat recovery (WHR) technology, which generates electricity from engine waste energy, is a promising solution. This research examines the integration of a thermoelectric generator and organic Rankine cycle as a combined WHR system onboard a passenger ship. The purpose of the paper is to analyze the TEG–ORC system parametrically and from a techno-economic perspective. The results showed that the optimum design scenario is achieved by integrating the recuperative ORC system (rcORC) with the TEG system, this integration produces 1569 kW as net output power (19% more than the original TEG–ORC system) at an evaporation pressure of 55 bar. The exergy efficiency of the system is enhanced from 43.2 to 48.6% by the addition of the recuperator. Also, the efficiency of the power system (engine + TEG–rcORC system) is 53.2% (+ 6.1% over the efficiency of the standalone engine). The integration of the TEG–rcORC system with the main engine provides the ship with an energy efficiency existing index (EEXI) of 22.47 g-CO
2
ton
−1
nm
−1
, this value is lower than the required EEXI by 11%. From an economical point of view, the levelized power cost of the TEG–rcORC system is 280.2 € kW
−1
, and the annual saving in expenses is 1.05 M€ with a discounted payback time of 3.9 years.
Publisher
Springer International Publishing,Springer,Springer Nature B.V
Subject
