In april 2006 we will start delivery of a new sickle shaped 3W fan blade.
The project is on schedule and we have done the first trial castings. The picture shows a 6-bladed 3W impeller
together with our Production Manager Christian Juhl, who was attending the trial run of the new mould.
The blade has the same length as the 9W blade (1980mm in a 10 bladed hub), but will have a larger pressure capability. This allows a slower
speed, reducing the noise. The curve below shows a comparison between a 1872/4-8/45/3W and a 1872/8-8/45/9W at 750rpm.
