Adrian Bejan’s Constructal Law states: “For a finite-size system to persist in time (to live), it must evolve in such a way that it provides easier access to the imposed currents that flow through it.” This can be seen at play in both animate and inanimate systems, from trees to lighting, from river systems to lungs. Such persistent systems tend to carry something … [Read more...]
Circuit Credit Card Assembly Heat Sinks Embedded with Oscillating Heat Pipes
Joe Boswell, Chris Smoot, Elliot Short, Nate Francis Introduction In this study, lightweight two-phase heat sinks embedded with the Oscillating Heat Pipe (OHP) technology are developed for the thermal management of military circuit card assemblies (CCA). OHP-embedded heat sinks efficiently transport heat generated by CCA centrally located components to the assembly’s … [Read more...]
Syringe-Packaged Greases Satisfy Electrical and Thermal Conductivity Needs
Intertronics now offers CircuitWorks’ syringe-packaged conductive greases, which provide electric and/or thermal conductivity for a range of applications. CircuitWorks’ new silicone-free heat sink grease will not harden or dry out while offering excellent thermal conductivity and dielectric properties. It is non-corrosive and exceeds ML-C-47113 for thermal conductivity, … [Read more...]
Thermally Conductive Plastic for LED Heat Sinks Reduces Lighting Costs
Bayer Material Science has announced Makrolon® polycarbonate as the latest addition to its family of heat-resistant plastics designed specifically for LED heat sink applications. Compared with aluminum, this grade of Makrolon polycarbonate conduct similar thermal performance while helping to reduce costs and enhance design freedom. Moreover, this material can help save costs … [Read more...]
Built-in Heat Spreading for Efficient Thermoelectric Cooling of Concentrated Heat Loads
Jeff Hershberger, Robert Smythe, Xiaoyi Gu and Richard F. Hill Laird Technologies, Inc. INTRODUCTION Thermoelectric cooling is an active thermal management technique. A thermoelectric cooler (TEC) has two circuit boards which are typically Al2O3 plates with copper circuit traces attached to them and semiconductor elements soldered between them. TECs are now available … [Read more...]
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