Dr. Richard Bonner, Anqi (Angie) Fan, Daniel Pounds and Dr. Ehsan Yakhshi-Tafti; Advanced Cooling Technologies, Inc. INTRODUCTION In light-emitting diodes (LEDs), 70 percent to 80 percent of the applied electrical power is converted to waste heat. If this thermal energy is not properly dissipated, the resulting high operating temperatures lead to reduced brightness, shift … [Read more...]
Calculating the Heat Dissipation Rate for a Vapor Condenser Heat Sink
This article presents an analysis methodology that can be used to calculate the thermal resistance of a vertical downward facing vapor condenser plate-fin heat sink, i.e. a heat sink in which the plate-fins extend downward from a horizontal base into a coolant vapor region and whose function it is to condense this vapor into liquid condensate. Such heat sinks are used in … [Read more...]
New Manufacturing Method for High Ratio Air-Cooled Extruded Aluminum Heat Sinks
A new method for manufacturing high ratio air-cooled extruded aluminum heat sinks has been announced by Sapa Extrusions North America. Created by Sapa’s North American Technical Center (NATC), an internal research, design and development center, the new method combines the company’s aluminum extrusion manufacturing techniques with friction stir welding technology to create … [Read more...]
New Manufacturing Method Increases Heat Sink Thermal Efficiency
A new method of manufacturing high ratio air-cooled extruded aluminum heat sinks has been announced by Sapa Extrusions North America. The extruded aluminum products manufacturer claims that heat sinks created using the new method are approximately eight percent more thermally efficient than the industry standard. “The patent-pending method utilizes a modular concept that … [Read more...]
Chip-on-Heatsink Technology Offers LED Lighting Benefits
Cambridge Nanotherm, in partnership with Optocap, an advanced microelectric and optoelectronic packaging design and assembly company, has announced that the first chip-on-heatsink modules ordered have been shipped to a customer in the LED industry. Cambridge Nanotherm’s proprietary nano-ceramic coating process is used to convert the surface of any aluminum object into a … [Read more...]
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