Payback Potential and Carbon Savings from Shipboard Waste Heat Recovery Systems
船舶廃熱回収システムの投資回収可能性と炭素削減効果 (AI 翻訳)
B. L. Pereira, Caio Teixeira de Carvalho, L. F. Assis, J. Ordonez, C. Marques, J. Caprace
🤖 gxceed AI 要約
日本語
本研究は、船舶用排熱回収システムの技術的・経済的・環境的ポテンシャルを評価。異なるエンジン出力（25,000 kW以上／未満）の船舶を対象に、熱力学解析とシミュレーションを実施。大型船では発電比率10%超、CO2大幅削減、投資回収期間も現実的だが、小型船では熱的・空間的制約から効率が低下する。それでも環境面では有意義な効果が確認された。
English
This study evaluates the technical, economic, and environmental potential of waste heat recovery (WHR) systems on ships with main engine power above and below 25,000 kW. Using thermodynamic analysis and simulations on four vessels, it finds that larger ships achieve up to 10% power ratio, significant CO2 reductions, and viable payback periods. Smaller vessels show reduced efficiency but still yield meaningful environmental gains.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は海運大国であり、国際海運の脱炭素化は重要な政策課題。本研究成果は、日本船主・造船所がIMO規制対応や省エネ投資判断を行う際の定量的根拠を提供する。特に大型船への適用可能性を示しており、日本企業の技術優位性を活かす方向性と整合する。
In the global GX context
International shipping is a hard-to-abate sector, and waste heat recovery is a mature efficiency technology. This paper provides structured, vessel-specific performance data (payback, CO2 savings) useful for IMO compliance strategies, fleet renewal planning, and corporate decarbonization targets. It supports the global push for energy efficiency measures under the IMO's initial GHG strategy.
👥 読者別の含意
🔬研究者:Provides comparative performance data across vessel sizes, offering a framework for further optimization studies.
🏢実務担当者:Payback period and fuel savings estimates can guide investment decisions for shipowners and operators.
🏛政策担当者:Quantifies emission reduction potential from a proven technology, supporting regulatory incentives or mandates.
📄 Abstract（原文）
International shipping is indispensable to global commerce, yet it remains a significant contributor to greenhouse gas emissions. Although waste heat recovery has been applied in other industries, its performance and economic viability in shipping are not yet fully understood, particularly across different vessel sizes and engine loads. This study evaluates the technical, economic, and environmental potential of waste heat recovery (WHR) systems onboard ships with main engine power above and below 25,000 kW. Thermodynamic analysis and computational simulations were employed to estimate electricity generation, fuel savings, and emission reductions under optimistic and pessimistic scenarios, using operational data from four representative vessels. The results indicate that larger ships achieve the most significant benefits, with power ratios up to 10%, substantial CO2 reductions, and viable payback periods. Smaller vessels, constrained by thermal and spatial limitations, show reduced efficiency and less favorable financial performance, although they still achieve meaningful environmental gains. The findings confirm that waste heat recovery is a mature and effective technology for improving ship energy efficiency and reducing emissions. The study contributes to scientific knowledge by quantifying performance differences between vessel types and providing a structured framework to support maritime decarbonization strategies.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/jmse14050464first seen 2026-06-29 06:23:32
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