Data centers are mostly managed by overly conservative thermal management approaches [1]. The typical thermal solution for data centers is perimeter computer room air handlers (CRAH). The traditional cooling method includes supplying air through raised floor plenum that is blown by the CRAH blowers, and the chassis fans, typically located at the rear end of the IT equipment, … [Read more...]
The Problem with Effective Thermal Conductivity
Simply stated, the problem with the use of volume weighted, effective thermal conductivity, kvw, in the thermal modeling of a printed circuit board (PCB), is inaccuracy. In this paper, we show how using kvw can lead to serious errors in the prediction of PCB temperatures. We recommend two, related, alternative procedures that provide greater … [Read more...]
A Brief Overview of Thermal Management in Printed Electronics
Editor’s Note: This is the first in a series of articles to appear in Electronics Cooling addressing emerging areas for electronics thermal management. Printed electronics (PE) is one of the key enabling technologies of many electronic products that we take for granted today, not just in functional feasibility but also in cost that seems to be on a continuous downward trend. … [Read more...]
Updates in Liquid Cooling Research
The below includes recent research in liquid cooling. Test results from the comparison of three liquid cooling methods for high-power processors Guy R. Wagner, Joseph R. Schaadt, Justin Dixon, Gary Chan, William Maltz, Kamal Mostafavi & David Copeland This study compares three different liquid cooling technologies to determine which of the three methods is able to … [Read more...]
A Novel Approach to Development of a Thermal Capacitor
INTRODUCTION In terrestrial or air-borne electrical and electronic systems, cooling requirements can be unsteady due to spikes in heat load, or changes in ambient conditions. Such an event results in a sharp rise in system temperature or temperature cycling thus possibly reducing the system reliability. In the electrical domain, fluctuations in voltage are managed by using … [Read more...]
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