Articles 1 - 1
Radar/EW
Next-generation dielectric heat transfer fluids for cooling military electronics - Story
July 09, 2009
Long the gold standard for inert dielectric heat transfer fluids in coldplate and spray-cooling applications in the military, Perfluorocarbon (PFC) liquids have faced scrutiny due to their high Global Warming Potentials (GWPs). The utility of Polyalphaolefin (PAO) alternatives is limited by flammability, high viscosity at low temperature, and by low vapor pressure that prevents their use in evaporative applications like spray cooling. New segregated Hydrofluoroether (HFE) and Fluoroketone (FK) fluids are nonflammable and have much lower GWPs than PFCs. They compare favorably with the PAO fluids and Silicate Ester (SE) fluids often used in military electronics, for single phase applications, and may be suitable for use in spray and other evaporative cooling applications.
Articles 1 - 1
