As most readers are aware, the data center industry has put an increased focus on energy efficiency and environmental impact. Data centers in the United States are estimated to consume nearly 2% of the total electricity. The de facto metric used in the data center industry to evaluate energy efficiency has been the Power Usage Effectiveness (PUE), as defined by The Green Grid … [Read more...]
Thermocouple Basics Part 1: Advantages to Multi-Channel Isolated Thermocouples
Multichannel isolated thermocouples is a system that RECOM developed for use in a test lab. We will discuss how this will be useful for others to know the advantages and disadvantages of such a system. What is a thermocouple? It is two different types of metals that are joined together. In figure 1, we have a metal that's called chromel, and another one called alumel. When … [Read more...]
Liquid Cooling Systems in Data Centers Help Companies Achieve Sustainability Goals
The millions of data centers worldwide require a significant amount of energy to function. This makes them not only very costly to operate, but also results in a substantial impact on the environment. Data Center Environmental Impact The environmental effects of all these data centers have become a growing concern to governments and the public. Industry experts are … [Read more...]
Rank Sum Tests
Introduction The previous column in this series described methods for assessing whether a set of data was normally distributed [1]. In the event that data is shown to not have a normal distribution, one might ask how to conduct a statistical analysis on it given that many statistical tests are developed on the assumption that the data are normal. For example, how can two … [Read more...]
Rapid and Accurate Analytical Model for Predicting Axial Fan Performance in Electronics Cooling
By Wenguang Zhao, Sahan Wasala, and Tim Persoons Introduction Forced air cooling remains essential for dissipating the heat generated by high-power-density devices in modern electronics [1]. Axial fans are widely used in information technology, telecommunications, automotive, and aerospace applications for air cooling. The aerodynamic performance (P-Q) curve of fans … [Read more...]
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