"Andy Champ" wrote in message
...
the_constructor wrote:
Can you explain difference between axial and centrifugal etc.


See

http://en.wikipedia.org/wiki/Axial_compressor
http://en.wikipedia.org/wiki/Centrifugal_compressor


Andy

Try this as well:


http://www.engineeringtoolbox.com/fan-types-d_142.html