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

how to set VAV system to supply only minimum outdoor air requirement?

asked 2018-06-13 03:38:16 -0600

2085 ●1 ●4 ●14

I am modelling VAV system for LEED baseline case system8 using HVACTemplate in EnergyPlus.
Since minimum outdoor air fraction is fixed based on autosizing calculation , extra outdoor air is being introduced in summer which lead to unmet hour due to limited cooling capacity.(refer to image below) What I want to implement is to introduce minimum outdoor air flow constantly through a year? Does anyone know how I can implement?
image description

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2018-06-20 17:42:55 -0600

MJWitte

9740 ●6 ●10 http://www.gard.com/

In the HVACTemplate:Zone:VAV object, specify FixedMinimum (instead of ProportionalMinimum) in the "Minimum Outdoor Air Control Type" field. Or if not using HVACTemplate, see the "Minimum Limit Type" field in the Controller:OutdoorAir object.

edit flag offensive delete link

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

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2018-06-13 03:38:16 -0600

Seen: 225 times

Last updated: Jun 20 '18

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 VAV system to supply only minimum outdoor air requirement? edit