The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...

When implementing cooling solutions for electronic equipment, system designers are confronted with a complex set of variables. The cooling requirements are typically dynamic, and ambient temperatures ...

Horton Inc. says its VMaster and Stratis Di Viscous Fan Drive and Controller systems offer an economical choice for customers who seek the flexibility of variable speed along with optimal engine ...

ROSEVILLE, Minn. — Horton Holding Inc. will launch in September new variable-speed fan drives and fan blades designed to improve commercial vehicle cooling system performance and help engine makers ...

Part-load efficiency is rapidly becoming the most important measure of energy efficiency in chiller units. Around the world, new environmental standards are increasingly based on a combined part-load ...

BorgWarner announced its Cool Logic variable speed fan drives are now standard equipment on MACK Granite, Titan and Pinnacle model series heavy-duty commercial diesel trucks. Based on four million ...

It's easy to understand how variable-speed motor drives benefit pumps and blowers from the energy curves that depict their performance. It is interesting to look at figures from the Energy Information ...

I've got a 120mm 120VAC fan I've been using as a desk fan, plugged directly into mains with a lamp cord. (Note for non-US readers: mains here is 120VAC, 60Hz, so I am using it at its rated specs.) I ...

A large number of the world’s power generation plants are operating with 50-year-old-plus fan equipment. These fans originally were selected from low- to moderate-efficiency designs that were the most ...

Fans are often used to ventilate agricultural buildings. Adjoining rooms with connecting air paths through open doors or manure channels can operate as a single room with a common negative pressure.

I have a Volcano 7 variable speed fan on my Duron 1.2Ghz machine. The fan speed is controlled by a temp. sensor between a 'low' and 'high' speed. The problem is, the crossover point for the two speeds ...