High Efficiency Heat Exchangers
Aegis Technology has developed highly efficient heat exchangers including heat sinks, radiators, and condensers for thermal management applications and for high power density electronics. These heat sinks, radiators, and condensers are based on the following technologies:
- Aluminum based composites
- Graphite foam
- Heat pipes
- Micro-jet array
- Network microchannel
- Phase change materials
- Porous media
These high efficiency heat exchangers which have been developed through projects with U.S. Army, DoE, and NASA are currently being commercialized.
Benefits of Network Microchannel and Microjet Arrays
Network microchannel and microjet arrays provide a 100% improvement over conventional microchannel heatsinks and also allow for more uniform temperature distribution.
Benefits of Graphite Foam
Strength-enhanced, high-thermal-conductivity graphite foam allow for lightweight and compact heat exchangers. The graphite foam heat exchangers provide a high-efficiency thermal management solution at both the component and system levels. Low-density, high-thermal-conductivity graphite foam materials show superior thermal performance compared with conventional metallic heat exchangers. Furthermore, graphite foam provides up to 500% improvement in heat dissipation, because of high thermal conductivity and large surface area. Traditionally, graphite has limitations including lower strength that may not provide sufficient robustness for field applications. However, Aegis Technology has developed strength enhancement techniques to obtain improvements of 400-500% without sacrificing thermal performance. By utilizing these techniques, Aegis has been able to fabricate high-efficiency, robust graphite foam heat exchangers with a substantial reduction in weight and size over conventional metallic heat exchangers.
(a) System level design of graphite foam heatsink,
(b) Heatsink with nano-coolant flow,
(c) Side-view of an integrated aluminum and graphite foam heat sink,
(d) Top-view of an integrated aluminum and graphite foam heat sink