Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
6

Variable speed fan powered terminal units

asked 2017-10-27 11:48:07 -0500

The October 2017 issue of the ASHRAE journal includes an article about fan-powered VAV terminal units. The article states that:

EnergyPlus, version 8.7, was recently released and it now states that it allows the user the simulate modulation of the terminal unit fan airflow through a part load fan curve or a performance table

I might be mistaken but I was under the impression that FP terminal units in EnergyPlus could only be modeled with constant volume fans, as specified in the documentation. I checked the EnergyPlus 8.7 release notes but couldn't see anything about FPB and part load fan performance. I thought that maybe they were referring to the new Fan:SystemModel object but I swapped the Fan:ConstantVolume for a Fan:SystemModel (with a typical VAV fan part load curve) in the 5ZoneVAV-ChilledWaterStorage-Mixed_DCV_MaxZd example file but the fan seemed to run similarly to a Fan:ConstantVolume. Am I missing something?

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
4

answered 2019-06-13 16:55:51 -0500

Repeating this answer here since this post was referenced here https://unmethours.com/question/38879...

This feature is not available in EnergyPlus yet (v9.1). This has been posted as a new feature request, issue #7311.

edit flag offensive delete link more

Your Answer

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

Add Answer

 



Question Tools

2 followers

Stats

Asked: 2017-10-27 11:48:07 -0500

Seen: 183 times

Last updated: Jun 13