What is the Midas XCI 50U tank?
This is a pumped single-phase immersion tank. Hardware sits in dielectric fluid and a pump drives the fluid past it, which carries more heat than relying on convection alone. Midas states heat dissipation up to 150 kW, qualified as cooling loop dependent. The tank does not set the limit on its own; the facility water it rejects into does. Immersed capacity is 50U plus three single-unit slots, taking servers up to 36.5 inches deep. The tank measures 2.39 by 1.12 by 1.52 meters and holds 440 gallons, or 1,666 liters, of fluid. Empty it weighs 750 pounds; filled and loaded it reaches 3,800 pounds, which is a structural question for a raised floor rather than a detail. Fluid pressure on the tank is low, at 1.5 pounds per square inch empty and 2.4 pounds per square inch with 50 servers immersed. A 3 horsepower pump runs from a 480 volt three-phase supply, and system power draw is 0.2 to 3 kW depending on load. Ambient heat loss to the room is 0.5 to 2 kW, so the space still needs some air cooling. Midas does not publish the facility-water temperature or flow behind the 150 kW figure, nor the fluid specification. Ask for the selection at the site's own water temperature, the fluid's replacement interval, and written server-vendor support for immersion.