Abstract: A two-phase immersion cooling apparatus may include an immersion tank with a primary condenser in thermal communication with an interior volume of the immersion tank and a vapor management system fluidically connected to the immersion tank. The vapor management system may enable the apparatus to effectively manage periods of high vapor production by removing vapor and other gases from a headspace of the immersion tank, condensing the vapor to liquid, and returning the liquid to the immersion tank.

Abstract: A method of and system for recovering a dielectric fluid used for immersion cooling of electronic devices, the method including filtering the dielectric fluid to remove a first group of solid contaminants; distilling the filtered dielectric fluid in one or more distillation tanks to produce a vaporized dielectric fluid; separating the vaporized dielectric fluid from less volatile contaminants, such that the vaporized dielectric fluid is introduced as a condensate into a circulation tank; circulating the condensate by pumping the condensate from the circulation tank through one or more filters; filtering the circulating condensate through the filter(s) to remove a second group of contaminants; and returning the filtered condensate to the circulation tank.

Abstract: An immersion cooling system for electronic equipment including a tank adapted to hold a liquid heat transfer fluid into which the electronic equipment can be immersed and a filter assembly(ies) having a filter housing with an inlet and an outlet and containing a filter cartridge. In some embodiments the filter assembly(ies) is adapted to be located in the heat transfer fluid in the tank, such that a cross-sectional area of the filter housing inlet is greater than a cross-sectional area of the filter housing outlet, the filter housing inlet is substantially vertically oriented on a side of the filter housing, the filter cartridge is positioned within the filter housing at an inclined angle relative to the filter housing inlet, and the filter housing outlet is disposed adjacent to a top of the housing. Advantageously, heat generated by the immersed electronic equipment produces a convective flow of heat transfer fluid through the filter housing.