×
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

How to install forced ventilation in a IP23 Motor

How to install forced ventilation in a IP23 Motor

How to install forced ventilation in a IP23 Motor

(OP)
Hello All

We was requested for make a change in one IP23 Motor with following name plate: 450 kW, S1, 400 V, 750 A, 2965/min.Frame 315.

Like you can see at Photos the motor is  designed with internal fan cooling, so we think is possible to install some forced ventilation like in DC motors.

All Ideas are wellcomen, pro and cons

Thanks for the inputs

Carlos  

RE: How to install forced ventilation in a IP23 Motor

Cons

1. Cost of externally driven fan

2. Lost of supply to this fan leads to loss of motor cooling

3. Additional power cost to run this fan

4. Cost of maintenance of this external fan

Pros

....

Muthu
www.edison.co.in

RE: How to install forced ventilation in a IP23 Motor

Hi, Petronila,

Quote (petronila):

We was requested for make a change in one IP23 Motor
What kind of change? Change of number of poles?
Zlatkodo

RE: How to install forced ventilation in a IP23 Motor

(OP)
Dear All

We are going to do the following:

1. Remove the internal fan
2. To install a blower over the large exhaust opening to blow air in the opposite of the original direction.(Before: NDE to DE)
3. Calculate the CFM for the new Fan, taking account one rule of thumb of 100 cfm of air per kW of losses, for it we will  assume 92% efficiency.
 
450 KW x 0.08 = 36 kW losses.
36 x 100 = 3600 cfm

4. close all exhauts in NDE side to avoid air looses.

Regards

Carlos

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