×
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

calculate cfm

calculate cfm

calculate cfm

(OP)
hi, i'm designing a drying oven and need to choose the right fan for the oven. how to choose the fan?
dim. of the oven:2275x2378x5470(mm)
temp in oven: 80deg. celcius( same in the whole oven)

i want to use 2 fan for this oven. the air sucked from middle and distribute evenly to top and bottom of th oven. can somebody help me with this.?? thanks

RE: calculate cfm

The minimum flow rate required (by this I am not accounting heat transfer efficiency) can be calculated by doing energy balance.

1.08 x cfm x (T1-T2) = [m x Cp x (t1-t2)]/X

Where, T1 = inlet temp. of air in deg.F
T2 = outlet temp. of air in deg.F
m = mass of the substance you are heating in the dryer in lb
Cp = specific heat in btu/lb F
t1 = initial temp. of the substance in deg.F
t2 = final temp. in deg.F
X = drying time in hrs.

Regards,

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