3D printed heat exchanger ’more efficient’ than conventional designs

A new type of lightweight, 3D printed heat exchanger with a maze-like design is more compact and efficient than its conventional counterparts, its developers say. A team led by engineers from the University of Glasgow have developed the system, which exploits the unique properties of microscale surfaces to create a high-performance heat exchanger. Heat exchangers, devices which transfer heat between fluids without mixing them, have a wide range of practical applications. Heat exchangers which transfer thermal energy between fluids are used in systems including refrigeration, fuel cells and the types of internal combustion engines used in cars and aircrafts. In a new paper published in Applied Thermal Engineering, the researchers describe how they developed and built the prototype system, which they estimate to be 50% more effective than a market-leading conventional heat exchanger despite being one-tenth of its size. The system owes its effectiveness to the design of architected surfaces over which liquids flow through the exchanger. The cube-shaped exchanger draws water through a core studded with tiny holes arranged in a gyroid configuration.