Abstract: A system for cooling computer hardware includes a first heat exchanger and a pump. The first heat exchanger includes a computer hardware contact surface configured to be in thermal contact with the computer hardware on a first side and to be in thermal contact with a cooling liquid on a second side. The first heat exchanger also includes a liquid chamber having a pump interface with at least one chamber inlet and at least one chamber outlet. The pump includes a chamber interface with at least one pump outlet and at least one pump inlet. The pump is configured to: detachably connect at the chamber interface to the pump interface, and drive the cooling liquid from a second heat exchanger to the at least one pump outlet and from the at least one a pump inlet to the second heat exchanger.

Abstract: A fan assembly configured for use with a radiator assembly in a cooling system. The fan assembly comprises a plurality of fan blades mounted about a central hub, and an annular ring member circumferentially coupled to the radially outboard end of each fan blade, coaxial with the central hub. The annular ring has an axial dimension equal to or exceeding the axial depth of each fan blade, whereby a radially outward flow of air from a high pressure region on one side of the fan blades is blocked from exiting the fan assembly radially during operation, and from flowing to a low pressure region on the opposite side of the fan blades. Axial air flow, driven by the rotational movement and configuration of the fan blades, is unimpeded by the annular ring member.