×
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

Large Scale Plotter Load

Large Scale Plotter Load

Large Scale Plotter Load

(OP)
The print room in our building was designed for basic office use and due to the number of plotters in the room it is often uncomfortably warm, especially in the summer months.  We have decided to install a split unit but have run into a slight problem in selecting a unit for the job.  Does anyone know the sensible heat load that a large scale printer would produce while printing?  I've done a fair amount of research and even contacted a few manufacturers but have had no luck.

RE: Large Scale Plotter Load

To be conservative, can't you just take the power usage of the device and assume it all goes to heat ?

That could be a starting point.

RE: Large Scale Plotter Load

The question I keep coming up with in this situation: what is an appropriate diversity factor to apply to the nameplate watts?  maybe 50%

RE: Large Scale Plotter Load

I know that DaveGrohl said he contacted some manufacturer's.  I can't imagine that the tech support staff for the manufacturer can't provide this information.  I think a 50% diversity factor is appropriate, because if you take the power usage of each plotter and assume all that goes to heat (which it doesn't) that is a conservative number in itself.  Then to assume that 1/2 the plotters are running at full power all the time seems like this should give a good number to design by.  

Whenever I needed heat gain information for a device I was alwasy able to find some number to go by by talking to a mnaufacturer's tech support.  Call Hewlett Packard. Even if it is not the type of plotter you have, I'm sure with HP being as big as they are they can give you a design number for their plotters.

RE: Large Scale Plotter Load

I would think that the diversity factor of this situation can be determined by observing the approximate usage.  If a large project is going out in the middle of summer, how often would the unit run?  How many sheets per minute can it print?

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