近日，日本川崎重工（KHI）宣布完成大型液化氢运输船货物围护系统（CCS）的技术开发。此前，川崎重工设计建造了一个测试用储罐，并进行了相关测试，以验证大型液化氢运输船货物围护系统的性能。为了实现大规模海上运输，氢气必须被冷却到-253°C进行液化，液化后的体积将缩小至气态体积的1/800，并需要长期可靠地维持在这样的低温条件下。为此，川崎重工开发了一种独特的新型货物围护系统—— CC61H，它采用球形设计，在相同的内部容积下拥有最小的外表面积，并能够最大限度地减少热量进入。该系统还具有双壳结构，可以实现高性能两级绝热。

Japan’s Kawasaki Heavy Industries (KHI) has completed the technological development for a cargo containment system (CCS) to be used in large liquefied hydrogen carriers. As explained, KHI designed and built a test tank to be used to verify the performance of a CCS for large liquefied hydrogen carriers, and conducted verification tests. In order to enable large-volume marine transportation of hydrogen, the hydrogen must be cooled to –253°C to be liquefied and reduced to 1/800 of its gaseous-state volume, and reliably maintained in these low-temperature conditions for long periods. To achieve this, Kawasaki developed a new distinctive CCS, CC61H type, for large-scale liquefied hydrogen carriers. It uses a spherical design to keep the outer surface area small relative to the inner capacity and minimize heat ingress. It also features a double-shell structure that provides high-performance, two-step thermal insulation.