Officially Released! Kunlun Lubricant Leads the Formulation of the Group Standard for Single-Phase Immersion Insulating Coolants

Recently, the group standard Single-Phase Immersion Insulating Coolant (standard number: T/CEEIA921-2025), led by Kunlun Lubricant, was officially released. The standard covers for the first time the full-chain specifications for single-phase immersion insulating coolants in immersion cooling industries such as data centres and battery energy storage, from product research and development to packaging and transportation, achieving a dual upgrade in product scope of application and overall performance, and will also provide more Chinese solutions for energy transition and the high-quality development of the digital economy.
Single-phase immersion insulating coolants can be widely used in liquid cooling systems of data centres and in thermal management of energy storage batteries, mainly transferring the heat generated by equipment through rapid absorption, so the electrical insulation, thermal management performance, material compatibility and safety of the products have a major impact on the energy efficiency, service life and safe operation of equipment. However, at present there is no unified international standard or national standard to guide such products, and the applicability of industry standards is also limited, resulting in uneven product quality and restricted application scenarios, which greatly constrains the healthy development of the industry and will further affect the safe operation and industrial upgrading of data centres and battery energy storage equipment.
Since September 2023, Kunlun Lubricant, as the lead unit, has joined hands with a number of industry-leading units to jointly compile this group standard, clarifying for the first time the full-chain specifications for single-phase immersion insulating coolants from technical requirements, test methods and inspection rules to packaging and transportation. In terms of performance indicators, it quantitatively specifies thresholds for key parameters such as breakdown voltage, dielectric constant and kinematic viscosity to ensure a balance between insulation and heat conduction performance; in the material compatibility section, because different equipment materials undergo different chemical reactions when in contact with the coolant, and in order to ensure long-term stable operation of equipment, the standard clarifies material compatibility requirements, which can greatly reduce the risk of equipment corrosion; in addition, the standard also adds limits on flash point, polycyclic aromatic hydrocarbon (PCA) content and global warming potential (GWP), ensuring personnel safety and environmental friendliness during product use and further helping to promote the green and sustainable development of the industry.
In recent years, by actively giving play to the leading role of the national team in the lubrication field, Kunlun Lubricant has actively led and widely participated in the formulation of a number of national and industry standards in the lubricant field, effectively advancing its standardization process. Recently, the first ISO new project proposal led by Kunlun Lubricant, Petroleum and Related Products - Determination of the Scuffing Temperature of Lubricants - SRV Test Machine Method, has been officially approved. This year, China's first independent D1 diesel engine oil standard system, led by Kunlun Lubricant, was also officially released. To date, Kunlun Lubricant has led and participated in the formulation and revision of more than 200 international, national and industry standards.