Multi-panelled heat exchanger

A multi-panelled heat exchanger comprising:

• a plurality of panels in a laminar stacked arrangement;
• each of said panels being formed from a plurality of parallel tubes in a spaced apart side-by-side relationship, said tubes being located between two plastic sheets that envelope and conform to the shape of the tubes so as to maintain said tubes in the side-by-side relationship, said sheets being bonded together between said tubes;
• each of said panels having an inlet manifold and an outlet manifold at opposed ends thereof, the inlet manifolds of the multi-panelled heat exchanger being interconnected in fluid-flow relationship and the outlet manifolds of the multi-panelled heat exchanger being interconnected in fluid flow relationship;
• each of said plurality of tubes of each panel being bonded at opposing ends thereof to said manifolds such that one end of each of said plurality of tubes is in fluid flow communication with the inlet manifold and the other end of each of said plurality of tubes is in fluid flow communication with the outlet manifold;
• each panel being wave-like in shape with peaks and troughs extending across the width of the panel;
• one face of each panel having at least one nodule located in each of said troughs, each nodule having a size such that it will contact an immediately adjacent panel in the multi-panelled heat exchanger without significantly increasing an overall thickness of the multi-panelled heat exchanger.