by Bob Simons – Reprinted from ElectronicsCooling, Feb., 2004 [Formatted by B. Guenin, 4/4/16] In past issues of ElectronicsCooling, methodologies were presented for estimating parallel plate-fin heat sink thermal resistance [1] and pressure drop [2]. The underlying assumption for both articles was that all the flow delivered by the fan is forced to go through the channels … [Read more...]
Cooling Fans Used for Computer Hacking
(June 24, 2016) Researchers in Israel have recently created malware call Fansmitter and hijacked computer fans to transmit data. According to PCWorld.com, “The research from Ben-Gurion University of the Negev shows how data could be stolen from “air-gapped” computers, which are not connected to the Internet” by manipulating the sounds fans create. Fansmitter can secretly send … [Read more...]
Portable Air Conditioning Are Temporary Saviors for Data Centers
(June 27, 2016) In case of a loss of power, mechanical failure, or planned maintenance, portable air conditioning might be an efficient solution to cool data centers’ electronics. According to ACHRNews.com, contractors and data center managers turn to portable cooling because they are “simple and quick to deploy”, as well as for their “low equipment cost and relatively small … [Read more...]
New Cooling Fan Blade Design
Cradle has released their new simpler, faster solution for fan design, SmartBlades. SmartBlades simplifies axial cooling fan design by automating generation of blade geometry CAD data. Engineers adjust parameters for blade number, profile, and twist. Shape information can be output in Parasolid XT format compatible with most CAE software. Or seamlessly import it into Cradle … [Read more...]
New PWM Controller for Fans Released
SANYO DENKI has recently released their “San Ace PWM controller”, which controls fan speed through PWM. This contributes to reduced system power consumption and the fan noise. Up to four PWM-input fans can be connected to each controller, without requiring a costly function generator. The controller can be powered by the fan power supply at rated voltages of 12, 24, and 48 … [Read more...]
- « Previous Page
- 1
- …
- 18
- 19
- 20
- 21
- 22
- …
- 58
- Next Page »
