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

Has optimum start adaptiveASHRAE been implemented?

asked 2018-12-05 15:37:56 -0500

mwilson's avatar

updated 2018-12-05 18:24:04 -0500

I'm trying to put an optimum start schedule on my building. I noticed that adaptiveASHRAE is the default Control Algorithm for AvailabilityManager:OptimumStart so I ran with it. However I can't get the output:variable Availability Manager Optimum Start Time Before Occupancy to change.

After doing a little research I found that between EnergyPlus versions 8.8 and 8.9 a note was removed from the Input Output Reference saying, "The AdaptiveASHRAE algorithm has not been implemented yet." Implying to me that it has been implemented.

I dug into the SystemAvailabilityManager source code to try and figure out what why my model doesn't start before occupancy, and I found what I think is the relevant selection of code:

else if (SELECT_CASE_var == AdaptiveASHRAE) {
                AvailStatus = NoAction;}

The code implies with NoAction, that it still hasn't been implemented. I looked back to EnergyPlus version 8.2 and found the code above hasn't changed. Is there somewhere else in the code that I need to be looking to try and figure out why my model doesn't start? Has adaptiveASHRAE been implemented?

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2018-12-06 04:19:19 -0500

This is a great report and with investigation, thank you! When you are fairly certain you discovered a bug, you should post that directly to Github issues for the development to address.

I confirmed your belief, and opened issue #7089.

So bottom line: No, it still hasn't been implemented.

edit flag offensive delete link more


Is there an update for the status of this feature? Is adaptiveASHRAE implemented?


Raul Teixeira's avatar Raul Teixeira  ( 2021-10-11 10:10:36 -0500 )edit

The issue I linked is still open.

Julien Marrec's avatar Julien Marrec  ( 2021-10-12 02:36:49 -0500 )edit

@Raul Teixeira the link to the EnergyPlus Github site that Julien shared is where new issues or feature requests for EnergyPlus are logged. The EnergyPlus development team then addresses those issues or feature requests that they and EnergyPlus users find important. This specific issue is still open, so it has not been addressed yet. You can "vote" on this issue by commenting or adding a "thumbs up" emoji to let the development team know you think it's important.

Aaron Boranian's avatar Aaron Boranian  ( 2021-10-13 08:38:40 -0500 )edit

Your Answer

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

Add Answer

Training Workshops


Question Tools

1 follower


Asked: 2018-12-05 15:37:56 -0500

Seen: 310 times

Last updated: Oct 11 '21