Abstract: A double sided-double heat exchanger core includes a plurality of sets of fluid passageways separated by a plurality of “S” shaped thermally conductive walls. Each set includes a plurality of fluid passageways. Each thermally conductive wall is configured to separate fluid flow between adjacent sets and configured to separate fluid flow between fluid passageways of one of the adjacent sets. The heat exchanger core is configured to provide segregated fluid flow between adjacent sets of fluid passageways. This heat exchanger core is particularly applicable for cooling equipment cabinets, wherein the air used to cool the equipment is recirculated through a plurality of sets and ambient air flows through interlaced sets to cool the recirculated air.

Abstract: An equipment enclosure (12) includes an interior cavity (16) housing a plurality of equipment compartments (22) configured to form vertical stacks, and a lower compartment (24) for housing batteries and/or other equipment. Airflow through the lower compartment (24) is isolated from airflow within the interior cavity (16). Heat exchangers (52, 54) are included for cooling internal air circulating air within the equipment enclosure (12) with external ambient air. Each heat exchanger (52, 54) draws external ambient air indirectly through the lower compartment (24) and directly from the external environment, and exhausts the air back to the external environment. The external ambient airflow through each heat exchangers (52, 54) is used to cool internal air circulating within the enclosure (12). The cooled internal air is provided through an opening (38) positioned proximate the bottom of the interior cavity (16).