Question-and-Answer Resource for the Building Energy Modeling Community

How to set minimum fan flow rate for VFD?

asked 2016-02-22 12:31:23 -0500

updated 2016-07-13 10:21:36 -0500

In practice, it is common for AHU VFD fans to have some set minimum motor frequency. I've been trying to implement this is an OS/E+ model but seem to be stuck (i.e. you need to fix the fan so it never goes below 30 Hz)

@Kyle Benne seems to be asking about this as well...but not sure if he ever got any satisfaction. https://unmethours.com/question/11631...

Anyone know how to accomplish this?

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2016-07-13 11:58:57 -0500

Julien Marrec

29032 ●85 ●74 http://www.effibem.com/

I think you could use Fan:ComponentModel for that. The field Motor Maximum Speed seems pretty aligned with what you do.

The drawback is that the object seems pretty detailed (or overkilled, depending on who's asking), and you'd have to implement it in an EnergyPlus measure if you want to stay within the OpenStudio ecosystem.

edit flag offensive delete link

Comments

@Julien Marrec Thanks for the advice! Minimum motor freq. is an important feature and hopefully will make it into OS in future releases. For now, E+ it is :)

NickC ( 2016-10-28 22:23:01 -0500 )edit

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Careers

Question Tools

1 follower

Stats

Asked: 2016-02-22 12:31:23 -0500

Seen: 32,780 times

Last updated: Jul 13 '16

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

How to set minimum fan flow rate for VFD? edit