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通过水性绿色能源减轻人为气候变化

Sophia T Olim¹, Anna Nickoloff¹, Leslie J Moffat¹

¹School of Earth and Ocean Sciences, University of Victoria, PO Box 1700, Victoria, BC, V8W 2Y2, Canada.

Scientific reports

|January 11, 2025

概括

由海洋热能转换 (OTEC) 提供动力的直接空气二氧化碳捕获和储存 (DACCS) 为减少大气二氧化碳提供了一个可持续的解决方案. 这项技术可以在70年内显著减少全球变暖.

科学领域:

气候科学气候科学
可再生能源技术可再生能源技术
碳捕获和储存是碳的捕获和储存.

背景情况:

将全球变暖限制在2°C需要大幅减少大气中的二氧化碳.
直接空气二氧化碳捕获和储存 (DACCS) 是去除二氧化碳的关键技术,但耗费大量能源.
海洋热能转换 (OTEC) 通过利用海洋温度差异提供可再生能源.

研究的目的:

评估将DACCS与OTEC相结合的潜力,以有效减轻二氧化碳排放.
评估这种综合方法的经济可行性和存储持续性.
量化OTEC驱动的DACCS对全球气温变暖的影响.

主要方法:

将DACCS技术与浮动平台上的OTEC发电集成.
利用深海沉积物进行安全和永久的二氧化碳储存.
模拟持续的OTEC-DACCS行动对全球气候的长期影响.

主要成果:

OTEC可以以与燃煤发电厂相竞争的成本为DACCS提供电力.
深海沉积物储存为捕获的二氧化碳提供了安全和永久的解决方案.
70年的OTEC驱动的DACCS可以将相对的全球平均温度变暖降低高达35%,相比于通常的业务场景.

结论:

OTEC和DACCS的结合为大气二氧化碳减少提供了一个可扩展和可持续的途径.
这一综合系统提供了一种具有成本效益和环保的气候变化缓解方法.
广泛部署由OTEC驱动的DACCS对于实现净零排放目标和限制全球变暖至关重要.

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