×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# Capacity of blower system.

## Capacity of blower system.

(OP)
Dear All

On one of the systems in our plant we have 2 x 2,4 m³/hr ring blowers installed in parrallel and further upstream a 5m³/hr ring blower installed in series with the two parrallel ones how does one determine the maximum discharge capacity of such a system

THANKS IN ANTICIPATION

### RE: Capacity of blower system.

Time to break out your calculator or better, spreadsheet.  What you need to do is develop the system curve.  Basically,what I understand you have is:

A source,
A possible section of inlet piping,
1 blower (you used the term upstream, I'm assuming this is the first blower in the system, 5 m3/hr),
more piping
2, 50% blowers (2.4 m3/hr each)
more piping
final delivery point.

Basically, it's a pressure drop/flow calculation through the system.  You'll need to adjust the flow rate through the system until the pressure drops through the piping and change in delivery conditions equal the pressure rises added by the blowers.  It's a trial and error calculation thus the best way is to set it up on Excel and curve fit the blower curves so you can easily adjust conditions.

Let's say you were compressing from 0 psig to 20 psig.  Adjust the flow rate through the system until the line losses + 20 psi (change in source/delivery pressure) equals the sum of the pressure rise from the blowers that are operating.  Change the source or delivery pressure, you get a new flow rate.  Change the number of blowers online, you get a new flow rate.  Change the fluid properties, you get a new flow rate.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

#### Resources

White Paper - How ESI is Helping Move New Medical Device Product to Market Quicker & More Cost Effic
Early Supplier Involvement has long been a strategy employed by manufacturers to produce innovative products. Now, it almost seems like a necessity. Because decisions made in the design phase can positively affect product quality and costs, this can help add value to OEM bottom lines. This white paper will discuss many facets of ESI, including why itâ€™s so valuable today, what challenges limit the benefits of ESI, how cost is impacted, and more. Download Now

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!