William Maltz, Darryl Moore, and Arun Raghupathy 1. Introduction With peak loads often in the order of minutes and ergonomic considerations limiting surface temperatures and acoustical noise, handheld devices, such as smart phones or tablets, are excellent candidates for use of phase change materials (PCMs). Processor loads in handheld products are highly variable. There … [Read more...]
Pluggable Optics Modules – Thermal Specifications, Part 1
Bonnie Mack and Terence Graham 1. Introduction Pluggable optics modules, (POMs), such as SFP, QSFP, QSFP+, QSFP28, CFP, CFP2, and CFP4 transceivers, are optical interface devices that are connected to a PCB through ports in the faceplate. A brief description of these modules is given in Table 1. Initially conceived as low power devices, the module power density has increased … [Read more...]
The Hidden Risk of Invisible Airflow Imbalance in an Efficient Contained Data Center
Husam Alissa, Kourosh Nemati, Dr. Bahgat Sammakia, Mark Seymour, Ken Schneebeli, Dr. Demetriou New Solutions, New Challenges Generally, a legacy data center consists of an array of hot and cold aisles where the air intake to the IT equipment resides in the cold aisle and the air exhaust of the equipment rejects hot air into the hot aisle. In a raised floor environment, chilled … [Read more...]
New Software Creates Heat Sink Geometries
From Cradle, HeatDesigner is a fast, efficient, and easy to use thermal analysis tool for electronics cooling. It includes a one time saving feature, a Parametric Study Tool, and plate heat sink creation. With a few inputs, the shape of pin or plates fins, and their orientation and spacing are quickly created. HeatDesigner models can contain 100 million elements so the flow … [Read more...]
Research Underway for Heat Conductor Substitutes for Diamond
(July 5, 2016) Thanks to a research grant awarded from the Office of Naval Research for pursuing “high risk-high reward” scientific and technological breakthroughs, six universities are working to develop cost-effective and high-quality substitutes for diamond as a heat conductor. Diamond was recently discovered to be the best available heat conductor, however it is too rare … [Read more...]
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