Power electronics devices such as MOSFETs, GTOs, IGBTs, IGCTs etc. are now widely used to efficiently deliver electrical power in home electronics, industrial drives, telecommunication, transport, electric grid and numerous other applications. This paper discusses cooling technologies that have evolved in step to remove increasing levels of heat dissipation and manage junction … [Read more...]
Someday Humans Will “See” The Heat!
Many biological creatures are enabled with the ability to “see” the heat – reptiles, for example, effectively use this ability to detect the size of the heat-emitting object and its range. Other biological entities, including mammals, are enabled with the ability to perceive heat by a process known as Thermoception or Thermoreception. As humans, we are capable of sensing … [Read more...]
Computational Modeling of a Novel End-of-Aisle Close-Coupled Cooling Solution
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...]
Recent Advancements in Oil Immersion Cooling
This blog summarizes some of the recent findings from an ongoing project “An In-Depth Understanding of Oil Immersion Cooling Strategies for Data Centers” at the University of Texas at Arlington (UTA). This project is supported by NSF I/UCRC grant in the program “Energy-Smart Electronic Systems” (ES2) and by many industry partners. Complete immersion of servers in … [Read more...]
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