Active cooling of busbars using compressed air

A busbar for a computing rack, the busbar comprising:

• a pair of electrically conductive rails each having a first end and a second end;
• open channels enclosed within each of the rails, the open channels extending from the first end to the second end in a respective rail;
• and
• an expansion valve coupled to at least one of the open channels at the first end and configured to expand air passed from a compressed-air source into the at least one open channel while the pair of rails are attached to an electrical power source.

A computing rack comprising a plurality of slots for installation of Information Handling Systems (IHSs), the rack comprising:

• a busbar configured to provide electrical power to the IHSs, the busbar comprising:
• a first rail having a first voltage level, the first rail having an internal channel extending from a bottom end of the busbar to a top end of the busbar;
• a second rail having a second voltage level, the second rail having an internal channel extending from a bottom end of the busbar to a top end of the busbar;
• an end cap manifold configured to route airflow into the internal channels at the bottom end;
• and
• an expansion valve coupled to the end cap manifold and configured to expand air received from a compressed air source.