Heat exchanger and small cell radio node incorporating the same

An electronic device comprising:

• electronic circuitry;
• and
• a heat exchanger comprising a roll-bond evaporator that comprises:
• a first metallic sheet and a second metallic sheet distinct from the first metallic sheet, the second metallic sheet overlapping and bonded to the first metallic sheet, the sheets jointly defining a primary panel area and at least one secondary panel area, wherein the at least one secondary panel area is one of a plurality of secondary panel areas, and
• a heatpipe channel network arranged along an interface between the bonded first and second metallic sheets, wherein the heatpipe channel network comprises first heatpipe channels arranged in the primary panel area and second heatpipe channels arranged in the at least one secondary panel area, the second heatpipe channels being in fluid communication with the first heatpipe channels;
• and
• at least one plurality of fins joined to the at least one secondary panel area, wherein the at least one plurality of fins are joined by a plurality of folds with fin faces extending in a vertical direction;
• wherein the electronic circuitry is mounted on the primary panel area and within a cavity formed by the primary panel area in combination with the plurality of secondary panel areas to permit heat generated by the electronic circuitry to be conveyed into the first heatpipe channels.