Immersion cooling: a high-performance plant-based fluid
A U.S. food company has created an immersion cooling fluid for data centres made from 90% vegetable oil.
In the IT industry, immersion cooling consists in submerging servers in a bath of non-conductive liquid to dissipate the heat generated by the computer components. Immersion cooling experienced rapid development in 2019 with the design and construction of the first immersive data centre. This cooling method is also used in other electronic applications such as solar PVs, batteries, and power transformers. The non-conductive immersion cooling fluid is called a dielectric fluid. Intended for use in medium to extra high voltage applications, dielectric fluids provide electrical insulation and also serve as coolant. Some dielectric liquids are sourced naturally, such as mineral or biological oils, while others are engineered.
Recently, US food company Cargill launched a plant-based immersion cooling fluid. It consists of over 90% vegetable oil plus performance-enhancing additives. The company claims that it provides more than 1,000 times the cooling capacity and up to 60% less energy usage than conventional air cooling. According to Cargill, the fluid offers a superior level of fire safety with a very high flash point of 325°C. Unlike synthetic fluids, it does not self-ignite.
Compared to conventional air cooling with HVAC systems, immersion cooling greatly reduces energy use, extends the life of the equipment, supports higher chip densities and lowers the overall operating cost. Studies indicate that immersion cooling technology consumes about 40% less power and creates less noise than traditional cooling equipment. Furthermore, immersion cooling does not require refrigerants such as hydrofluorocarbons and dielectric fluids have a low GWP.
 Cargill launches plant-based dielectric immersion cooling fluid. https://www.fuelsandlubes.com/cargill-launches-plant-based-dielectric-immersion-cooling-fluid/
 Pambudi, Nugroho Agung, et al. "The immersion cooling technology: Current and future development in energy saving." Alexandria Engineering Journal 61.12 (2022): 9509-9527. https://doi.org/10.1016/j.aej.2022.02.059
 Is Immersion Cooling the Future of High-Performance Computing? https://www.grcooling.com/blog/immersion-cooling-future-performance-computing/