Heat exchanger

A layer for a multilayer heat exchanger, the layer comprising:

• a plurality of flow paths;
• a first end section comprising a plurality of flow path inlets and a plurality flow path outlets;
• a second end section comprising a turnaround section;
• a first morphing section fluidly connect to the first end section;
• a second morphing section fluidly connected to the second end section;
• and
• a central section positioned between and fluidly connected to the first and second morphing sections;
• wherein the plurality of flow paths extend from the flow path inlets in the first end section to the flow path outlets at the first end section via the turnaround section at the second end section to allow for two-pass flow;
• wherein in the first end section and the second end section the flow paths have a first cross section;
• wherein in the central section the flow paths have a second cross section;
• wherein in the first and second morphing sections, the cross section of the flow paths morphs between first cross section and the second cross section;
• wherein the first and second morphing sections allow the first end section, the central section, and the turnaround section to be integrated within the layer as one continuous flow path without the need for a separate turnaround section to redistribute the flow in use;
• wherein the layer of the heat exchanger is separated into a first side and a second side by a separating wall extending in a longitudinal direction of the layer;
• and
• wherein the layer comprises one or more enclosed flow paths adjacent to the separating wall which do not extend into the turnaround section.