×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*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.

Students Click Here

Jobs

Exhaust hood usage formula

Exhaust hood usage formula

Exhaust hood usage formula

(OP)
I am installing multiple exhaust hoods in a new multi-story facility.Each hood has approximately 300-500 cfm capacity.
The building is divided among several tenants each with varying amounts of exhaust hoods.Multiple exhaust hoods are common to one exhaust fan on the roof.Rental space is based on square footage of floor space.How can I figure the amount of a surcharge plus or minus for cfm's lost for each exhaust hood?

RE: Exhaust hood usage formula

Get a baseline of operating cost from power consumption by the hood fan and divide the bill proportionally based on the number of hoods per tenant. Don't put flow stations in the ducts because you'll drive yourself crazy trying to calibrate and track them. Plus you shouldn't generally put extra stuff in hood exhaust ducts. Don't do this every month, but establish a norm and raise their rent by the operating cost divided by their proportion of the total number of hoods.

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.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources