Heat exchanger and energy conversion device assembly including the same

A heat exchanger to perform heat exchange with a predetermined apparatus, the heat exchanger comprising:

• a heat exchange channel construction configured to form a heat exchange area for heat exchange with the apparatus and to perform heat exchange through a flow of a heat transfer medium,
• wherein the heat exchange channel construction comprises a plurality of heat exchange channels each in a spiral shape, and
• a first region where a first heat exchange channel and a second heat exchange channel are interlocked along their spiral paths to perform heat exchange together;
• a second region where the first heat exchange channel and the second heat exchange channel are not interlocked, such that either the first heat exchange channel or the second heat exchange channel performs heat exchange independently,
• wherein, the second region is adjacent to the first region,
• wherein, within the first region, the first heat exchange channel and the second heat exchange channel are arranged in an alternating manner along an axis of the spiral shape, and
• wherein, within the second region, one of the first heat exchange channel or the second heat exchange channel forms at least one turn and is continuously arranged along the axis of the spiral shape.