Variable-Load Design of MEA-Based Onboard Carbon Capture for LNG-Fueled Ships with ORC Support
ORC支援を伴うLNG燃料船向けMEAベースオンボードCO2回収の可変負荷設計 (AI 翻訳)
Jun-Seong Kim
🤖 gxceed AI 要約
日本語
LNG燃料船のエンジン負荷変動に対応するオンボードCO2回収装置の設計ウィンドウを開発。5×5の設計-運用マトリクスを解析し、過負荷時の性能劣化やD70が低中負荷運用に最適であることを示した。ORCによる廃熱回収も評価。
English
Develops a variable-load design window for onboard MEA-based CO2 capture on LNG-fueled ships. Analyzes a 5×5 design-operating matrix, revealing asymmetric mismatch and that D70 is optimal for low-to-medium loads. Also evaluates ORC waste heat recovery for net power and LNG heating.
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
日本は世界有数のLNG輸入国・海運国であり、船舶からのCO2排出削減は喫緊の課題。本研究成果は、実船搭載型CCSの設計基準を提供し、海事分野の脱炭素化（GX）に貢献する。
In the global GX context
This paper addresses the operational challenge of variable engine loads for shipboard carbon capture, a key issue for maritime decarbonization globally. It provides a systematic design framework that can inform IMO and other regulatory bodies on feasible capture rates under real-world conditions.
👥 読者別の含意
🔬研究者:Provides a design window methodology for sizing shipboard carbon capture under variable loads, applicable to future studies on maritime CCS.
🏢実務担当者:Offers guidance on selecting absorber capacity for LNG-fueled vessels, balancing capture performance and equipment size.
🏛政策担当者:Supports development of regulations and incentives for onboard carbon capture as a decarbonization measure for shipping.
📄 Abstract（原文）
Main engine load varies continuously, whereas onboard carbon capture columns are installed with fixed capacities. For liquefied natural gas (LNG)-fueled ships, this mismatch between design and operation makes off-design robustness, rather than nominal-point performance, the governing sizing criterion. This study developed a variable-load design window for onboard monoethanolamine CO2 capture and evaluated a dual-loop organic Rankine cycle (ORC) as a secondary thermal integration option. A verified process model was applied to a 5 × 5 design–operating matrix (D50–D90/O50–O90). The mismatch was strongly asymmetric. When operating load did not exceed design load, capture rate remained near 90%; under overload, absorber treated only the design-point-equivalent exhaust-gas flow, causing capture performance to deteriorate rapidly. The mean CO2 avoided rate increased from 57.4% at D50 to 70.4% at D90, while absorber diameter increased from 3.23 to 4.06 m. D70 emerged as the balanced option for low- to medium-load services, D80 marked the transition before full robustness, and D90 was robustness-oriented for frequent high-load operation. The ORC recovered 104–185 kW net power and supplied 231–410 kW LNG-side heating. Results support capacity selection before ORC application; CO2 liquefaction and storage, voyage-weighted validation, and shipboard ORC feasibility remain outside the present scope.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/jmse14111056first seen 2026-06-06 05:00:33
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