Cooling of electronic devices

Incropera FP (1999) Liquid cooling of electronic devices by single-phase convection. Wiley, New York... 

A second example can be generated when an intensive flow over a body produces closed field lines (called a vortex) at variable distances. This effect was observed by Strouhal (1850-1912) when some flow of air over wires produced a song. The Strouhal s singing wires give the measure of the frequency that characterizes the vortex flow. This type of flow has been used to produce the so-called grid turbulence, which has various applications in the forced cooling of electronic devices [6.29]. 

Combined natural convection and radiation thermal resistance of various heat sinks used in the cooling of electronic devices between the beat sink and the surroundings. All fins are made of aluminum 6063T-5, are black anodized, and are 76 mm (3 in) long. ... 

Finned surfaces of various shapes, called heat sinks, are frequently used in the cooling of electronic devices. Energy dissipated by these devices is transferred to the heat sinks by conduction and from the heat sinks to tlie ambient air by natural or forced convection, depending on the power dissipation requirements. Natural convection is the preferred mode of heat tiansfer since it involves no moving parts, like the electronic components themselves. However, in (he natural convection mode, the components are more likely to run at a higher temperature and thus undennine reliability. A properly selected heat sink may considerably lower the operation temperature of the components and thus reduce the risk of failure. 

Lallemand M., Lefevre F., (2004), Micro/Mini heat pipes for the cooling of electronic devices. Preprints of the 13 International Heat Pipe Conference, Shanghai, China, September 21 -25, 12-23... 

Synthetic jets have attracted significant interest in recent years due to their potential application in flow control (see Fig. 4), in particular performance control of aerodynamic surfaces through fluidic modification of their apparent aerodynamic shape. Application of synthetic jets can move the local streamlines in the vicinity of a synthetic jet and cause an apparent modification in the shape of the boundary. Such shape modifications are often achieved by operating a synthetic jet at timescales that are below the characteristic time scales of the mean flow. Synthetic jets are also employed for forced cooling of electronic devices, steering mechanism for capsule endoscopy, thrust generation, and jet noise reduction, among others. 

The first part of this book deals with the characteristics of flow and heat transfer in the channels and comparison between conventional size and micro-channels, which are important to understanding micro-processes in cooling systems of electronic devices with high power density and many other applications in engineering and technology. 

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