Abstract: A fluid distribution unit for a two-phase cooling system can include a reservoir configured to receive a two-phase flow of dielectric coolant. A first pump can be fluidly connected to a supply line extending from the reservoir. A heat rejection loop can be fluidly connected to the reservoir. The heat rejection loop can include a heat exchanger and a second pump. The second pump can be configured to circulate a flow of single-phase liquid coolant from the reservoir, through the heat exchanger, and back to the reservoir.

Abstract: A hot-swappable server can be adapted to blindly mate to a manifold assembly of a cooling system. The server can include a chassis with a circuit board positioned within the chassis and a first processor electrically connected to the circuit board. The server can include a cooling line assembly with an inlet fitting, an outlet fitting, and a heat sink module fluidly connected between the inlet and outlet fittings. The first heat sink module can be in thermal communication with the first processor. The inlet and outlet fittings can be mounted to the chassis proximate a rear side of the chassis. The inlet and outlet fittings can be blind-mate fittings. Coolant flowing through the cooling line assembly can flow in through the inlet fitting, through the first heat sink module where it absorbs heat from the first processor, and out through the outlet fitting.

Abstract: A manifold can convey and distribute fluid within a cooling system. The manifold can include an inlet chamber and an outlet chamber. A first plurality of quick-connect fittings can fluidly connect to the inlet chamber, and a second plurality of quick-connect fittings can fluidly connect to the outlet chamber. The quick-connect fittings can allow one or more cooling line assemblies to be rapidly connected between the inlet chamber and the outlet chamber. The manifold can include a bypass fluidly connecting the inlet chamber to the outlet chamber. A valve can be positioned in the bypass. The valve can control a flow of pressurized coolant from the inlet chamber to the outlet chamber through the bypass to maintain a desired pressure differential between the inlet chamber and the outlet chamber. The valve can be a differential pressure bypass valve.

Abstract: A fluid distribution unit for a two-phase cooling system can include a reservoir configured to receive a two-phase flow of dielectric coolant. A first pump can be fluidly connected to a supply line extending from the reservoir. A heat rejection loop can be fluidly connected to the reservoir. The heat rejection loop can include a heat exchanger and a second pump. The second pump can be configured to circulate a flow of single-phase liquid coolant from the reservoir, through the heat exchanger, and back to the reservoir.