针对氢能储运效率低、成本高的技术瓶颈,提出一种集成液氮冷屏复合绝热的低温高压储氢系统。基于40英尺（约12.2 m）标准罐箱尺寸优化设计,系统实现999.68 kg氢气存储（容积效率64 kg/m³）,是传统高压拖车装载量的3倍。通过采用六边形管束拓扑优化方法,确定200 mm直径管束为最优方案。系统通过液氮冷屏（静态蒸发率0.25%/d）与高真空多层绝热技术,无损储氢周期达118 d。通过建立“点对点”运输成本模型,量化分析表明在200~800 km运输距离、500~1500 kg/d规模下,系统单位运输成本较高压拖车降低73.2%,较液氢槽车节省初始投资54.2%。
Abstract
To address the technical bottleneck of low efficiency and high cost in hydrogen energy storage and transportation, this study proposes a cryogenic compressed hydrogen storage system integrated with a liquid nitrogen cold shield composite insulation structure. Based on the optimized design of a 40-foot standard tank container, the system achieves a hydrogen storage capacity of 999.68 kg with a volumetric efficiency of 64 kg/m³, tripling the hydrogen loading capacity compared to traditional high-pressure tube trailers. Through hexagonal tube bundle topology optimization, 200 mm diameter is identified as the optimal tube bundle configuration. By combining liquid nitrogen cold shield （with a static evaporation rate of 0.25%/d） and high-vacuum multi-layer insulation technology, the system enables loss-free hydrogen storage for 118 days. A point-to-point transportation cost model is established to quantitatively analyze the economic performance. Results demonstrate that, under transport distances of 200-800 km and daily hydrogen supply scales of 500-1500 kg/d, the system reduces unit transportation costs by 73.2% compared to high-pressure tube trailers and achieves 54.2% lower initial investment than liquid hydrogen tankers.
关键词
低温能源存储 /
氢储存 /
氢经济 /
低温高压储氢 /
氢运输
Key words
cryogenic energy storage /
hydrogen storage /
hydrogen economy /
cryogenic compressed hydrogen storage /
hydrogen transportation
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基金
上海市青年科技启明星计划（22QB1403900）
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