Authors: M.B. Kravchenko

Efficient high-performance hydrogen liquefiers are created on the basis of dynamically ope- rating machines — turbocompressors and turboexpanders. However, due to the low mole-cular weight of hydrogen, the use of turboexpanders in low-performance hydrogen liquefiers is very problematic. To solve this problem, we propose a hydrogen liquefaction scheme in which its cooling is performed by means of a cascade cryogenic cycle. Nitrogen is used in the first stage of the cycle; neon is used in the second stage. The peculiarity of the proposed scheme is that the work produced in the nitrogen expander is used to compress neon. The calculated value of the specific work of hydrogen liquefaction in the proposed cycle is 8,5 kWh/kg excluding the heat of ortho-paraconversion of hydrogen.