Heat exchangers are commonly employed to transfer heat from a warm device to a cooler medium such as air, water or refrigerant. Copper and aluminum are commonly used to make heat exchangers with flat fins or pin fins to maximize the surface area for heat transference. We have developed a carbon fiber pin fin heat exchanger for electronics cooling and energy conversion applications. Carbon fibers (CF) have small diameters approximately 5 to 10um, yet they are strong and stiff compared to other conductive materials such as metal. Importantly, CF also has good thermal conductivity, even several times higher than copper when the CF is suitably processed for thermal performance.
KULR’s carbon fiber heat exchanger provides orders of magnitude larger surface area for heat transference while weighing a fraction of that of copper or aluminum heat exchangers. KULR’s ultra thin pin-fin conductor generates a higher rate of heat transfer per unit area resulting in a heat exchanger that is orders of magnitude more effective than traditional metal foil fins commonly used in electronics cooling. KULR’s carbon fiber heat exchangers are used to cool chips, electric motors, and high power diodes.