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Assessment of compact heat exchanger consisting entirely of tubes arranged in a turbulence generating mesh

Abstract The performance of a novel liquid-air heat exchanger is experimentally evaluated and compared with that of several commercial automotive radiators having louvre fins and flat tubes. The coils were assessed using a closed loop test rig which has the capability of simulating ambient conditions of any habitable place on earth. The prototype heat exchanger was designed to generate three dimensional vortical motion using an open mesh structure, to enhance heat transfer without incurring high pressure loss penalties. When compared with respect to the available heat transfer surface area, the heat transfer capacity, and the heat transfer coefficient were increased. Also the pressure drop was well below that of the conventional radiators. However, in a direct comparison the overall the heat transfer capacity fell short of expected commercial radiator requirements.