Heat exchanger with support structure

A tubular heat exchanger, comprising:

• a first flow path to receive a first fluid flow, wherein the first flow path is defined by a conduit;
• and
• a support structure with a plurality of support structure openings, wherein:
• the support structure comprises a bottom having a curvature and a first length, a top having a curvature, which is similar to the curvature of the bottom, and a second length exceeding the first length, and intermediate layers having curvatures that are similar to the curvatures of the top and the bottom and lengths that exceed the first length and are exceeded by the second length,
• the support structure supports the conduit such that the first flow path extends in a serpentine configuration through the support structure with straight sections extending through the intermediate layers along longitudinal axes that are transverse to the curvatures of the bottom, the top and the intermediate layers and hairpin sections extending through the intermediate layers and connecting pairs of straight sections, wherein the support structure supporting the conduit fully encases the hairpin sections and the straight sections,
• the plurality of support structure openings define a second flow path to receive a second fluid flow, and
• the first flow path is in thermal communication with the second flow path.