Ian
Fans
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ian.stewart
- Forum Contributor
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- Joined: Sat Nov 18, 2006 1:59 pm
- Location: Far Far south, any further south and my feet are wet
Fans
one of these silly questions, just been thinking, for example if you run a computer fan at a set speed and moves 200cfm, if you bolt a second identical fan to the first, assuming there are no leaks between the housings and, run them both at the same speed and same direction would you move more air, less air or the same amount, would a airgap between the two fans have any effect on the results ????
Ian
Ian
THE SMOKING GNU
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
If you run two fans as you describe, then they will flow the same quantity of air (provided they do actually run at the same speed as the previous single far) the reality is that they will both run faster than a single fan and flow more, but also draw more current. The whole set up will not flow as much as the two fans side by side.
leaving a gap between them that is open to the outside world will reduce the flow. Spacing the fans apart in a common duct that is closed to the outside would probably improve flow over a short range of distance between the fans, adding flow straiteners in the gap between would increase flow (and eficiency)
Mike
leaving a gap between them that is open to the outside world will reduce the flow. Spacing the fans apart in a common duct that is closed to the outside would probably improve flow over a short range of distance between the fans, adding flow straiteners in the gap between would increase flow (and eficiency)
Mike
poppet valves rule!
