Another easy fan question
Another easy fan question
(OP)
I have another easy question about fans... well, I hope it is an easy question...
We have in our facility an oil-cooler; it works with two axial blowers, suctioning air through the finned tubes and sending it out directly to the atmosphere.
We could invert the rotation of motor and change the position of the blowing wheel, putting it backwards...
But, ¿could this increase the efficiency of the fan?... I mean, ¿it's better to put the restriction (due to the finned tubes) at the suction-side or at the discharge side, if we are looking for a better performance?
Thanks,
JuanMC
We have in our facility an oil-cooler; it works with two axial blowers, suctioning air through the finned tubes and sending it out directly to the atmosphere.
We could invert the rotation of motor and change the position of the blowing wheel, putting it backwards...
But, ¿could this increase the efficiency of the fan?... I mean, ¿it's better to put the restriction (due to the finned tubes) at the suction-side or at the discharge side, if we are looking for a better performance?
Thanks,
JuanMC





RE: Another easy fan question
RE: Another easy fan question
You could recover the heat in the building rather than wasting in the atmosphere, but fan operation will be the same.
RE: Another easy fan question
RE: Another easy fan question
Willard, thanks, but we can't use the heat. It is the refrigeration of the lube oil for bearings for an electric generator, there is no use for the heat.
I was wondering if it was better; The system has had a lot of miss-designs (piping, thermal capacity under-sized, and others) that we were checking all the posibilities.
Thanks again,
JuanMC
RE: Another easy fan question
You might get increased flow rate if you move the motor away from fan as shown below.
from p___|'''''| to p___________|'''''|
d |....| d |....|
Provided you have the space to do so. You might be able to do this by add in a shaf coupling and a extension shaft.
Regards