It is well known that the thermal properties of heating or cooling fluids play a major role in the development of energy-efficient heat transfer equipment. However, conventional heat transfer fluids such as water, ethylene glycol and engine oils have, in general, poorer heat transfer properties than most solids. In spite of considerable research efforts, major improvements in … [Read more...]
Insulated Metal Printed Circuits – A User-Friendly Revolution In Power Design
Introduction The growing pressure to fit as much circuitry into the smallest space possible has created new and more acute thermal problems for the design engineer. More high power components in a smaller space means higher watt densities, which lead to increased heat. As the operating temperatures of components within a design increase, their performance, stability, and life … [Read more...]
Metal Injection Molding Of Heat Sinks
Introduction New thermal management solutions are needed to provide cost-effective means of dissipating heat from future generation microelectronic devices. A relatively new process to reduce the costs of fabricating large quantities of complex components, such as heat sinks, is metal injection molding (MIM), a net-shaping process in which metal powder is mixed with a … [Read more...]
Communication Network Power Efficiency Assessment, Limitations and Directions
Introduction Despite the slowdown in the communication industry, Internet traffic continues to grow rapidly, fueled by the explosion in data communications, mobile Internet, e-commerce, content rich applications, and multi-media services. Internet traffic has increased by approximately 80% yearly in each of the last three years, and will continue to grow at 60 - 80% annually … [Read more...]
Keep Cool by Sensing Current to Control Fans
Control of cooling fans has become increasingly popular as efforts are made to reduce system power consumption and mechanical fan noise. The purpose of including a fan is to reduce temperature and keep it as low as possible. Mean time to failure for a variety of systems increases rapidly as temperature elevates. This has brought about a wide choice of thermally based fan … [Read more...]
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