Re: Gm130l Vs. Gm90s For Vacuum Conveying?
dear epeters
A vacuum blower is part of your pneumatic conveying system design.
If you change the vacuum pump, you also have to change the pipe design, to adapt to the changed airflow and the changed pressure drop.
And probably accept some change in capacity.
The GM90S (90 m3/min) is limited at 500 mbar vacuum (short rotors)
and
the GM130L (130m3/min) is limited at 400 mbar vacuum(Long rotors).
(Pre inlet machines can handle a vacuum up to 850 mbar, at the same time requiring a different pipe diameter)
Without knowing the installation you intend to build, I would strongly suggest to redesign a possible alternative installation.
Even in case the GM130L is underused at a lower rpm compared to the possibly fully used GM90S at higher rpm.
Performing an alternative pneumatic conveying installation for cement cannot be so much of a problem when you already have done it.
take care
teus ■
Teus
Re: Gm130l Vs. Gm90s For Vacuum Conveying?
Dear Teus,
it is true the GM130L has long rotor, but in vacuum it has little importance.
Max pressure difference in vacuum for GM90S and GM130L is 500mbar.
Epeters: it depends of the flow your need.
GM90S is limited to ~90m3/min and GM130L to ~130m3/min (they don't have the same volume per rotation). ■
Gm90s 130l Aerzen Blower
Hello,
I know its late in the game, but I did notice another potential wrinkle in trying to use one blower over the other: The GM90S has DN250 (10") accessories, and the 130L has (12"). Aerzen Canada can also check availability of a GM150S blower and potential surplus equipment. There is usually a way around longer lead times.
By the way, if your blowers were not originally intended for vacuum sercvice, they may only be rated for 400mBar - nothing that cannot be addressed, but a quick reference call to your local Aerzen representative should clear this up really quickly.
Best regards,
Ralf Weiser
www.aerzenusa.com ■
GM130L vs. GM90s for Vacuum conveying?
Hello All,
I'm installing a 100tph vacuum conveying system in a cement plant, to transport dry powdered cement. The blower spec'd for the project was an Aerzen GM130L, which I had in stock, but as the result of a breakdown in another part of the plant, the blower was used in another location. Delivery on these blowers is very long, so I was wondering if I can use a slightly different blower that I have in stock.
The blower I'm looking to use is an Aerzen GM90s. Both blowers (130L or 90s) are mated to 125HP, 1780 RPM motors. If they both use the same amount of horsepower, how does the output of each differ? Is it possible to use the GM90s in place of the GM130L?
Cheers, ■