As energy costs continue to increase, there is an increased awareness of energy usage and a greater emphasis on methods to reduce the energy consumed by electronic equipment. The portion of electronic equipment power devoted to cooling can be significant. For example, the servers in a typical data center can require up to two times the useful computing power for cooling. The … [Read more...]
Thermal Facts and Fairytales: Does Your Correlation Have an Imposed Slope?
There must be an ideal world A sort of mathematicians’ paradise Where everything happens As it does in textbooks — Bertrand Russell This is the third column devoted to the sense and nonsense of correlations. My earlier comments [1] regarding Russell’s quote are maybe worth repeating: “Generations of mechanical engineers have been educated to use the correlations that fill … [Read more...]
Real-Time Data Center Cooling Analysis
The question to be addressed in this article is: Do you really need a traditional CFD package to design or manage your data center under all circumstances? Are there any practical alternatives on the cooling-analysis spectrum between it and spreadsheet calculations by your in-house cooling guru? What are the consequences of unreliable input data for important geometric details … [Read more...]
Strategies for Using Thermal Calculation Methods
Thermal analysis tools available to engineers and scientists offer a wide variety of methods to solve problems. A cursory review of the past decade’s issues of ElectronicsCooling magazine can show methods ranging from analytical techniques (such as hand calculations) to spreadsheets to full numerical/computational solutions such as CFD (Computational Fluid Dynamics) and FEA … [Read more...]
Thin Film Thermoelectrics Today and Tomorrow
Thermoelectric effects were discovered around 1830 by French and German scientists. Thomas Seebeck observed that a magnetic field was produced by a closed loop of two different metals with each junction having a different temperature. Soon after, Danish scientist Hans-Christian Oersted found the magnetic field to be caused by an electric current, so he assigned to Seebeck’s … [Read more...]
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