Additively manufactured heat exchanger

An additively manufactured heat exchanger for media-separated heat transfer between a first fluid and a second fluid, comprising:

• an additively manufactured heat exchanger block having a block longitudinal direction, a block transverse direction, and a block height direction that are perpendicular to each other;
• a plurality of first flow channels for conducting the first fluid, the plurality of first flow channels formed in and penetrating the heat exchanger block;
• a first chamber disposed at a first transverse end of the heat exchanger block, the first chamber extending in the block height direction;
• a second chamber disposed at a second transverse end of the heat exchanger block which is turned away from the first transverse end in the block transverse direction, the second chamber extending in the block height direction;
• a plurality of second flow channels for conducting the second fluid and fluidically separated from the first flow channels, the plurality of second flow channels formed in the heat exchanger block, penetrating the heat exchanger block in the block transverse direction, and fluidically connecting the first chamber to the second chamber;
• a first connection for supplying and/or discharging the second fluid;
• and
• a second connection for discharging and/or supplying the second fluid;
• wherein the plurality of second flow channels are arranged in a plurality of longitudinal rows of channels that are arranged next to one another in the block height direction within the heat exchanger block;
• and
• wherein each longitudinal row of channels of the plurality of longitudinal rows of channels is defined by a group of second flow channels that are arranged next to one another in the block longitudinal direction.