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Compressor Vs Blower


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#1 Gabriel MV

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Posted 13 April 2015 - 03:02 PM

As part of class, I am designing a basic system that requires slightly pressurized air (100cfm @1.2 barg).

I am having a hard time choosing between a compressor and a blower. Using a compressor seems to be very excessive (centrifugal or rotary screw) to achieved the flow rate. When I look at blowers, it seems that most only have maximum pressure <1barg.

 

Any useful tips or resources? 

 

Thank you

 

Gabriel



#2 shan

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Posted 14 April 2015 - 06:11 AM

2 stages blowers.



#3 breizh

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Posted 14 April 2015 - 07:03 AM

http://www.hsiblower...literature.html

I think Shan give you a good suggestion , multi stages blower! You may also consider the link above and may be contact some company like Atlas Copco for advice .

Good luck

Breizh

#4 Gabriel MV

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Posted 14 April 2015 - 10:59 AM

Thank you shan and breizh. Very useful advice!

 

Gabriel



#5 Zauberberg

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Posted 14 April 2015 - 11:22 AM

With the compression ratio 2.2 you are well within the centrifugal machine range. I'm sure there are manufacturers out there.

Apart from 2-stage blowers you can use single-stage rotary lobe/screw blowers as well. Look at Gardner-Denver website for more info.



#6 fallah

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Posted 14 April 2015 - 11:33 AM

Gabriel MV,

 

Above pressure ratio of 1.2 the pressurization is to be done by compressor; then here with pressure ratio of 2.2 you can go using a compressor rather than a blower...



#7 curious_cat

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Posted 15 April 2015 - 12:47 AM

Can you tell more about the application? 100 cfm sounds a low flow rate from the process point of view. Just curious. 






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