by Bob Simons – Reprinted from ElectronicsCooling, Feb., 2004 [Formatted by B. Guenin, 4/4/16] In past issues of ElectronicsCooling, methodologies were presented for estimating parallel plate-fin heat sink thermal resistance [1] and pressure drop [2]. The underlying assumption for both articles was that all the flow delivered by the fan is forced to go through the channels … [Read more...]
Thermal Facts and Fairy Tales: Understanding and Defining Electronics Cooling Requirements
Jim Wilson My experience in electronics cooling has taught me that it is often a fairy tale that thermal engineers fully understand requirements related to their designs and analyses, or that they fully understand the implications of subjecting thermal requirements on suppliers or coworkers. A rush to get a quick answer or to use the latest feature in an analysis software code … [Read more...]
Application of Phase Change Materials in Handheld Computing Devices
William Maltz, Darryl Moore, and Arun Raghupathy 1. Introduction With peak loads often in the order of minutes and ergonomic considerations limiting surface temperatures and acoustical noise, handheld devices, such as smart phones or tablets, are excellent candidates for use of phase change materials (PCMs). Processor loads in handheld products are highly variable. There … [Read more...]
New Software Creates Heat Sink Geometries
From Cradle, HeatDesigner is a fast, efficient, and easy to use thermal analysis tool for electronics cooling. It includes a one time saving feature, a Parametric Study Tool, and plate heat sink creation. With a few inputs, the shape of pin or plates fins, and their orientation and spacing are quickly created. HeatDesigner models can contain 100 million elements so the flow … [Read more...]
Liquid Cooled Data Center with More Power and No Leakage
(June 29, 2016) Recently, eBay, Dell, and Intel claimed to have made “major strides in channeling the potential of liquid cooling” to enable greater processing power without excessive consumption “that could have implications for the hyperscale and web services market”, according to EnterpriseTech.com eBay, the world’s largest online marketplace, which handles more than 1 … [Read more...]
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