A sorbent canister heat exchanger is provided which can be used for removig carbon dioxide from rcirculated air in manned space craft or submarines. The sorbent canister heat exchanger includes a frame (20) defining a volumetric body (21) with substantially flat upper (26) and lower (27) sides that each has inwardly extending ribs (35) defining airflow pathways (350), sorbent material (60), heat exchange elements (40) disposed within an interior (210) of the body (21) and partition walls (80) disposed to run perpendicularly with respect to the ribs (35) and to transmit loading between the upper (26) and the lower (27) sides from the ribs (35) and through the interior (210) of the body (21).
