First Domestic 2K Superfluid Helium Compressor Unit in the Kilowatt Range Passes Testing

In October 2026, the first domestic helium compressor unit in the kilowatt power range for superfluid cooling at 2 K passed specialized tests on low-temperature performance. The breakthrough in ultra-low-temperature refrigeration equipment is part of a broader advance in the domestication of key components for large scientific installations and prospective energy projects.

The first domestic helium compressor unit for superfluid cooling at 2 K passed low-temperature performance tests. Source: Institute of Physical and Chemical Technology, Chinese Academy of Sciences.

A Decade-Long Path from Research to Serial Equipment

The state-owned company Binlun Huanjing (Moon-Tech), specializing in compressor technology and high-tech equipment, entered the helium compressor segment in 2015. In 2016, a helium compressor unit for ultra-low temperatures was successfully developed, intended for large cryogenic refrigeration systems in the liquid-helium range. In 2017–2018, the product was applied in low-temperature research facilities, superconducting magnets, and helium liquefaction equipment. The helium screw compressor passed review by the Expert Commission of the China Federation of Mechanical Industry: it was noted that the product fills a domestic gap, the prototype's overall characteristics are on par with the international state of the art, and its volumetric efficiency and isothermal efficiency are at the internationally leading level.

In 2019, the project "Development and Application of Key Technologies for Screw Compressors for Special Media under Extreme Conditions," implemented jointly with Xi'an Jiaotong University, received the First Prize of the China Science and Technology Award in Mechanical Engineering. During 2020–2024, the product was applied in large scientific installations, superconducting systems, and low-temperature energy; the company deepened cooperation with the Institute of Physical and Chemical Technology of the Chinese Academy of Sciences and the Zhongshan Advanced Low-Temperature Technology Institute, focusing on increasing cooling capacity, efficiency, and expanding the range of applications. In 2025–2026, the medium- and large-volume screw helium compressor was included in the "Ten Achievements of the Helium Supply Chain" list by the China Industrial Gas Association.

As of 2026, the company has completed more than 20 helium compressor projects and delivered over 40 units.

Technical Specifications and Design Solutions

Binlun Huanjing's helium screw compressors are designed for compression of special media and ultra-low-temperature cooling. Key parameters:

• Volumetric flow range: 100–14,000 m³/h
• Maximum design pressure: 5.2 MPa
• Configurations: single-stage and two-stage compression with corresponding systems

The design employs specialized high-efficiency rotor profiles for helium, combined multi-point oil injection, and reliable seals, which optimize the compression process, increase efficiency, and reduce the risk of helium leakage. The design is characterized by compactness, low noise, and low vibration levels. Production is carried out on digital intelligent lines using 3D printing; the automated control system enables operation without a permanent operator presence.

Applications

The equipment is intended for large cryogenic refrigeration systems, superfluid-helium-based systems and superconducting technologies, as well as for projects in controlled fusion, magnetic levitation, quantum computing, space technology, liquid hydrogen production, and helium extraction from LNG.

Outlook

The company plans to continue investing in the development of key technologies in ultra-low-temperature equipment and compression of special media, to strengthen interaction with universities and research institutes, and to accelerate the translation of scientific results into engineering applications.

Source: MOON-TECH: Company News.