China’s self-developed hydrogen liquefaction system to power national carrier rockets

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Screenshot of Sina Weibo

The first hydrogen liquefaction system researched and developed in China with high daily production of liquefied hydrogen has been successfully produced, to supply the carrier rockets with liquefied hydrogen produced in the country in the future.

The hydrogen liquefaction system successfully completed start-up, production, automatic shutdown and reheat procedures as planned, and continuously produced for 35 cumulative hours and produced 35.55 cubic meters of liquefied hydrogen.

Its planned daily production capacity was 1.7 tonnes and the actual daily production measured at full capacity was 2.3 tonnes, meeting the target.

At present, the engines of Chinese carrier rockets Long March-5B, Long March-7 and other new generation carriers all use liquefied hydrogen and liquefied oxygen as fuel, while most of the the liquefied hydrogen used in the Chinese aerospace industry is produced using foreign equipment.

The system with the current daily output can effectively meet the demands of the high frequency of China launch missions.

By addressing the problems of a series of key technologies, the 101 Institute of the Sixth Research Academy of China Aerospace Science and Technology Corporation (CASC) which developed the system, achieved the localization of more than 90% of the system. , said Wang Chenggang, director of the institute.

Hydrogen is a colorless, odorless gas that requires several complicated steps to be liquefied. One of the key technologies that the institute solved is to keep the storage temperature of liquefied hydrogen at minus 253 Celsius by minimizing the thermal conductivity of the container.

The system will play an important role in supporting the development of hydrogen and oxygen engines for Chinese aerospace systems and boosting the Chinese hydrogen energy industry by supporting the development of storage and transportation of the hydrogen and long-distance transport.

World time

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