선박폐열발전의 이론적 투자모델을 적용한 경제성 분석
© 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
The demand for high-efficiency technologies to prepare for the rapid increase in ships’ carbon emissions and fuel costs is rising. The IMO is strengthening regulations on carbon emissions from ships. At the same time, the adoption of eco-friendly fuels such as ammonia or ethane is being delayed due to rising fuel costs and upfront investment costs. In this context, energy conversion technology that utilizes waste heat generated on ships is gaining attention because it is readily accessible, requires low initial investment, and applies to various fuel types and vessel types. This study examined the costs derived from a theoretical initial investment analysis model for a 100 kW-class ship waste heat power generation system currently under development and compared them with the actual calculated costs. The initial cost derived from the theoretical model, approximately $910,000, was more than 50% higher than the actual cost, due to factors such as national labor and manufacturing costs. However, the power generation model that applied actual costs yielded high results for economic indicators such as the Benefit/Cost ratio, IRR, and NPV, measuring 2.93, 24.4%, and $440,000, respectively. The applied operating conditions were a power-generation model using LNG fuel and a ship expected to operate for 80% of the year.