High-density hardware and software are developed as part of an initiative to greatly increase data center compute densities. Concept systems presented here are based on the Intel® Itanium™ processor family and are designed for a 1U rack-mount form factor. The current dual-processor system concept is targeted at the front-end server market (e.g., web hosting and mail routing), … [Read more...]
Simplified Formula for Estimating Natural Convection Heat Transfer Coefficient on a Flat Plate
Although most of the emphasis today in the electronics cooling community is devoted to extending forced convection cooling capability, many applications still depend upon natural convection cooling. Basically, natural convection cooling combined with radiation is what results when a fan is not used in the cooling design to move air. Instead, movement of the air is induced by … [Read more...]
General aspects on fan selection and layout
Introduction and Description of Fan Types Small ventilators are generally called fans. Depending on the geometrical design of the impeller, various constructional types are distinguished to indicate the main direction of the airflow. Here are the descriptions of the most important types of fans: Axial Fans Axial fans are characterized by their typical impeller form, which … [Read more...]
The treacherous streams
During the development of a telecommunications product, an unpredictable phenomenon of air streams within the maze of cards and module was encountered. It could only be compared to suddenly confronting powerful inner streams in a calm ocean. Unlike the ocean, however, these streams appeared in a man-made machine. It seemed as if someone had rewritten the laws of physics. It was … [Read more...]
Future trends in heat sink design
In today's electronics equipment, total system dissipated power levels are increasing with every new design. Increases in power levels combined with the market expectation of reduced package sizes lead to heat problems that, if uncontrolled, can significantly shorten the life of the electronics. Although this "increased power - decreased size" scenario has been prevalent for … [Read more...]
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