We all understand that higher circuit density and increasingly compact microelectronic devices have created a need for more efficient cooling. Vapor chambers have emerged as a widely employed solution in some of the most demanding microelectronics applications. They are already found in high-performance computers, such as servers, workstations, and personal gaming desktops and … [Read more...]
Adding Function, Value, and Performance to Direct-to-Chip (DTC) Cold Plates With Ultrasonic Additive Manufacturing
Lance Dumigan Fabrisonic, LLC Mark Norfolk Fabrisonic, LLC Practical Knowledge Gained “The performance of DTC cold plates can be enhanced by a new method of fabrication called Ultrasonic Additive Manufacturing (UAM). Building DTC cold plates with UAM could enhance performance and functionality.” The direction of Artificial intelligence and High Power Computing … [Read more...]
Calculation Corner: Properties of Humid Air
INTRODUCTION Long time readers may recall that one answer to the question of how humidity changes the thermal conductivity of air is “Nothing to worry about” [1]. Generally, the effect of humidity on air properties is small enough that it can be neglected. However, at high ambient temperatures and low pressure, humidity effects may need to be addressed in applications such as … [Read more...]
Beat the Heat! Dissipation Solutions Using Active Thermal Management Systems
This article is a summary of a webinar presented by ACT at Thermal Live Fall Summit in 2023. Introduction to Active Thermal Management Systems In the realm of high power density systems, effective heat management is not just a necessity; it's a critical component of functionality and longevity. These systems, found in everything from advanced computing to industrial … [Read more...]
Calculation Corner: A Simple Method for Estimating Radiation Heat Transfer
This article describes a semi-empirical equation that can be used to assess radiation heat transfer in terms of an effective convection coefficient. The effective convection coefficient due to radiation is shown to be: Where temperatures are in °C and ε is the emissivity of the radiating surface. This equation is accurate to within ~10% over a temperature range of 0 - … [Read more...]
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