GPU designer Nvidia is hiring for a chemical/materials engineer to join its 'immersion technologist' team evaluating immersion cooling fluids and materials.
Immersion cooling, where servers are submerged in dielectric fluids, have the potential to remove significant quantities of heat - but the approach has seen limited success outside of the cryptomining industry.
The sector is hopeful that increasing thermal design points (TDP) will cause traditional data center businesses to reevaluate the technology.
The hire would "apply their expertise in chemistry and materials science and to help develop mechanical/thermal and electrical immersion cooled designs for Nvidia's next-generation GPU and DGX products," the listing states.
The role would involve developing "meticulous testing procedures for evaluating the performance and compatibility of cooling fluids and wetted materials in data center environments," and "mitigation strategies to address any issues identified during testing."
Among the factors expected to be tracked are "chemical leaching from components into the fluid, component degradation, fluid degradation, heat transfer efficiency, corrosion resistance, and environmental impact."
The hire is expected to have experience with single phase and two phase immersion cooling systems.
Nvidia is separately developing a modular data center with a cooling system that combines direct-to-chip, pumped two-phase and single-phase immersion in a rack manifold with built-in pumps and a liquid-vapor separator, as part of the DOE's Coolerchips program.
"The design cools chips with a two-phase cold plate, while the rest of the server components with lower power density will be submerged inside a hermetically sealed immersion sled with the servers cooled using green refrigerants for the two-phase cooling and dielectric fluid for the immersion," the project notes state. "The two-phase porous metal cold plate will achieve a thermal resistance as low as 0.0025°C/W."
Nvidia was awarded $5 million in 2023 to work on the project.
