Recirculating dielectric fluid cooling

A method for immersion cooling comprising:

• providing, by a distribution manifold of an immersion cooling arrangement of a server system, dielectric fluid to a plurality of trays, wherein each tray of the plurality of trays holds one or more circuit boards immersed in the dielectric fluid and each tray has a first opening allowing the dielectric fluid to be injected into the tray by the distribution manifold, and a second opening allowing the dielectric fluid to escape from the tray into an interior of the server system;
• collecting, by a catchment area of the immersion cooling arrangement, the dielectric fluid that escapes from the plurality of trays;
• and
• recirculating, by a pump of the immersion cooling arrangement, the dielectric fluid collected by the catchment area back to the distribution manifold for distribution to the plurality of trays, wherein the recirculating is done at a rate equal to or greater than a rate at which the dielectric fluid escapes from the plurality of trays.

A server system comprising:

• a plurality of circuit boards;
• and
• an immersion cooling arrangement having:
• a plurality of trays, each tray of the plurality of trays holding one or more of the plurality of circuit boards immersed in a dielectric fluid and having a first opening for injection of the dielectric fluid into the tray, and a second opening, for escape of the dielectric fluid from the tray;
• a catchment area, disposed below the plurality of trays, to collect the dielectric fluid that escapes from the plurality of trays;
• and
• a distribution manifold having a plurality of injection ports disposed above or adjacent to respective trays of the plurality of trays, the distribution manifold coupled with the catchment area, to deliver the dielectric fluid collected in the catchment area back to the plurality of trays via the injection ports, wherein fluid is recirculated from the catchment area to the distribution manifold at a rate equal to or greater than a rate at which the dielectric fluid escapes from the plurality of trays to the catchment area.