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The Korean Society For New And Renewable Energy
[ Article ]
New & Renewable Energy - Vol. 22, No. 2, pp.5-5
ISSN: 1738-3935 (Print) 2713-9999 (Online)
Online publication date 18 Jun 2026
Received 21 Apr 2026 Revised 14 May 2026 Accepted 26 May 2026
DOI: https://doi.org/10.7849/ksnre.2026.0021

선박 폐열회수 시스템의 엔진 규모, 연료, 그리고 사이클별 편익 분석

김세규1) ; 문정현2) ; 김현주3) ; 이덕주4) ; 문새다슬5) ; 이희연6) ; 윤수정7) ; 김준한8) ; 최용석9) ; 오철10) ; 임승택11), *
Analysis of Engine Scale, Fuel, and Cycle Benefits for Ship Waste Heat Recovery System
Se-Gyu Kim1) ; Jung-Hyun Moon2) ; Hyeon-Ju Kim3) ; Deok-Joo Lee4) ; Sae-Da-Seul Moon5) ; Hee-Yeon Lee6) ; Soo-Jeong Yoon7) ; Joon-Han Kim8) ; Yong-Seok Choi9) ; Cheol Oh10) ; Seung-Taek Lim11), *
1)Research Technician, Seawater Energy Plant Research Center, Korea Research Institute of Ships & Ocean engineering (KRISO)
2)Senior Engineer, Seawater Energy Plant Research Center,Korea Research Institute of Ships & Ocean engineering (KRISO)
3)Principal Researcher, Seawater Energy Plant Research Center, Korea Research Institute of Ships & Ocean engineering (KRISO)
4)Professor, Department of Industrial Engineering, Seoul National University
5)Professor, Department of Industrial Engineering, Kongju National University
6)Ph.D. Candidate, Department of Industrial Engineering, Seoul National University
7)M.A. Candidate, Department of Industrial Engineering, Seoul National University
8)Captain, Republic of Korea Army (ROKA)
9)Professor, Department of Marine Police, Korea Maritime & Ocean University
10)Professor, Department of Ship Systems Engineering, Korea Maritime & Ocean University
11)Researcher, Seawater Energy Plant Research Center, Korea Research Institute of Ships & Ocean engineering (KRISO)

Correspondence to: * limst@kriso.re.kr Tel: +82-33-630-5023 Fax: +82-33-630-5005

© 2026 by the New & Renewable Energy
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Here, we evaluated the benefits of applying an Organic Rankine Cycle-based waste heat recovery system (WHRS) to ships in response to EEXI/CII regulations of the International Maritime Organization and 2050 net-zero carbon emission target. Waste heat sources generated by the ships and the characteristics of each working fluid were analyzed; 170°C steam generated by the economizer was selected as the heat source, with R-1233zd(E) as the working fluid. Cycle performance with and without an internal heat exchanger was compared, and benefit equations for the WHRS application were derived. WHRS was applied considering US-UK as a regular ship; fuel consumption and carbon emission reductions per engine size and fuel type were summarized. Considering 10 operations annually, the 5S50ME engine with basic cycle on heavy fuel oil showed 89.93 ton/year fuel savings and 280 ton/year greenhouse gas reduction (total 61,501,115 KRW/year, lowest), whereas 7S50ME engine with internal heat exchanger cycle on ammonia achieved only 241.65 ton/year fuel savings (total 286,841,571 KRW/year, highest). Future analyses need to incorporate capital and operating expenditures, payback period, and benefit/cost ratio for a comprehensive economic assessment.

Keywords:

Waste heat recovery system, Organic rankine cycle, Benefit, Fuel

키워드:

폐열회수시스템, 유기랭킨사이클, 편익, 연료