2024年-美国船级社碳中和路径和过渡技术展望-154页_15mb

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🛰️ Maritime Industry Decarbonization

🚢 The document details the International Maritime Organization's (IMO) revised strategy for net-zero emissions by 2050, exploring alternatives like alternative fuels and energy efficiency technologies.

🛠️ Regulatory Landscape

🌐 The IMO's mid-term measures include carbon pricing mechanisms and fuel standards, driven by regional initiatives. Compliance is challenging.

📊 Market Outlook

📈 Demand for alternative fuels like ammonia, methanol, and LNG is growing. Shipyard capacity is shifting toward green technologies. The orderbook for newbuilds remains mixed.

🧪 Fuel Pathways

🔬 The study assesses various fuels (e.g., ammonia, hydrogen, e-fuels) and preferences pathways with lower lifecycle emissions. The best candidates for carbon neutrality are identified. The GHG Abatement Cost (GAC) index demonstrates the cost-effectiveness of carbon-neutral options under certain scenarios.

⚙️ Energy Efficiency Technologies (EETs)

🔧 EETs like air lubrication, wind propulsion, and hull improvements are being retrofitted, with orders increasing. Limitations include high costs and retrofit compatibility.

⚙️🔧 EETs are short-term solutions contributing up to 55% energy savings by 2050 under an optimistic scenario.

🔬 E-fuels and biofuels show strong emission reduction potential but face scalability and cost challenges.

⚠️ Challenges

🏭 Black carbon emissions from ships contribute significantly to global warming. Offshore activities pose risks like methane leaks and biodiversity impact.

⛽️ Alternative fuel pathways require massive infrastructure investments. CO2 storage and carbon capture face technological and economic barriers.