Articles from May 2008 Issue

2U Rack Mountable Vapor Compression Cooling System For High Power Electronics

May 1st, 2008

Vapor compression refrigeration has long been used to cool telecommunications equipment and some high performance computers. On the whole, however, its usage has been confined to high-value, relatively large, and stationary applications. The advantages of…read more

Estimating Dew Point Temperature For Water Cooling Applications

May 1st, 2008

Over the past several years thermal engineers and others in the computer industry have become acutely aware of the challenge of increasing power dissipation and the potential of liquid (principally water) cooling to provide a…read more

Modeling Multiple Heat Source Problems In Electronic Systems

May 1st, 2008

Introduction Readers of ElectronicsCooling know about the rapid pace of technological developments towards an increasingly higher level of miniaturization and, hence, an incredible increase of dissipation power densities. Thus, restating some very well known facts…read more

On The Challenges of Thermal Characterization of High-Power, High-Brightness LED Packages

May 1st, 2008

Introduction In recent years, high-power, high-brightness Light Emitting Diodes (LEDs) have penetrated into an ever-increasing number of lighting applications. For such devices, maintaining a low die temperature is becoming a huge challenge because of the…read more

On The Hate/Love Relationship Between The U.S. And SI

May 1st, 2008

Last year I devoted some words on correligion: the religious belief in the usefulness of correlations to solve real-life problems. I forgot to mention that correlations have one big advantage; they are dimensionless meaning that…read more

Thermal Conductivity Of Liquid Metals

May 1st, 2008

This column deals with the thermal conductivity and melting points of liquid metals. Thinking about liquid metals, many people associate them with high temperatures. It is not widely known that some metallic alloys are liquid…read more

Heat Spreading: Not a Trivial Problem

May 1st, 2008

 Introduction Heat spreading is essentially area enlarging: the larger the area, the more heat can be removed at the same temperature difference (subject to certain limits). Unfortunately, except for the simplest of cases, the equations…read more