你懂得网,日本精品少妇一区二区三区,国产精品永久免费,无码AⅤ精品一区二区三区 ,欧美综合网站,亚洲综合色区图片区,日本精品网站,日韩精品观看 ,日韩无码兔费黄色视频_精品人妻AV无码一区二区三区_

Contact Us

24V DC Cooling Fan fan revolutions how to calculate?

Date: 2014-12-27   Click: 1555 Times

"24V DC Cooling Fan" fan than revolutions have an important role in the selection of the fan, the more convenient especially for a wide range of centrifugal fan performance curve dimensionless selection. Than the number of revolutions of the fan with the concept of specific speed pumps, but also the same meaning than the number of revolutions in the application. Currently, the fan model establishment of specific speed is according to formula (4-21) calculated results and the provisions of the unit. "24V DC Cooling Fan" fan than ns is the number of revolutions of the wheel in terms of a single, multi-stage (stages of i) and double suction blower fan, which are i ns specific speed stage fan? N? P20 ?? ?? i? (4-22) n double suction fan ns? one of p202 (4-23) than the number of revolutions is the basic performance parameters "24V DC Cooling Fan" fan. For the performance of the previous discussion also applies to parameters specific speed. In addition, ns specific speed and also used to calculate the size of the unit concerned, following discussions on these issues separately.

Back to: Industry news

+86-0769-83660708

Home Product News Contact