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AirflowNetwork and OpenStudio

asked 2015-06-10 12:27:49 -0500

Caroline gravatar image

Hi, I have a lot of doubts about OpenStudio, that I cant solve. What are the groups that OpenStudio uses of EnergyPlus? It integrates the natural ventilation of the airflownetwork group? And what about the PAT, can parametrize a model with natural ventilation or just the HVAC?

Thank you,


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answered 2015-06-10 15:25:08 -0500

I'm in the process of adding most of the AirflowNetwork group into OpenStudio, but I'm afraid it won't be completed until later this summer. I am aiming for making it into 1.9, which will be out in September.

It would be possible to add in the necessary objects via a measure, but doing so will require some care (as well as knowledge of AirflowNetwork and the OpenStudio model). If you have a pretty good command of the OpenStudio model, it should be fairly doable.

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@antonszilasi Well, I'm not going to comment on someone else's answer, so I'll answer with a comment on my own answer. Barring any further interruptions, there'll be at least partial support of AFN in the next major release of OpenStudio.

Jason DeGraw gravatar imageJason DeGraw ( 2016-04-13 08:41:15 -0500 )edit

@Jason DeGraw can I ask what features will be available? Are they outlined here https://openstudio-sdk-documentation.... I'd like to port my code over to OS I suppose it would be a good idea to wait until you are finished with the AFN also do you work for NREL?

antonszilasi gravatar imageantonszilasi ( 2016-04-19 08:58:36 -0500 )edit

@antonszilasi Initially the plan is to support the non-distribution elements, with the distribution elements to follow later. The documentation you link to is the documentation of the CONTAM translator, which is already built into OpenStudio

Jason DeGraw gravatar imageJason DeGraw ( 2016-04-22 10:50:55 -0500 )edit

@Jason DeGraw do you have any updates on this issue? I am looking at the latest release and there seems to be full support for AFN within OpenStudio is this correct? https://openstudio-sdk-documentation.... thanks!

antonszilasi gravatar imageantonszilasi ( 2017-01-27 17:12:44 -0500 )edit

@antonszilasi Actually, that link is to other parts of the CONTAM integration work that I did some years ago. So that is not what you're looking for. But I have good news. After many, many delays we're on track to add "core" AFN (both non-distribution and non-distribution elements) this year. I'm not sure which release it'll be in, but it should start appearing in iteration builds this spring.

Jason DeGraw gravatar imageJason DeGraw ( 2017-01-27 19:31:47 -0500 )edit

answered 2015-06-10 12:52:54 -0500

OpenStudio doesn't directly support airflow network. You would have to add that as an EnergyPlus measure. I don't think anyone has written this yet. If you did have this measure you could parameterize it with PAT.

For an example of an EnergyPlus measure see the simple PV measure. In the most basic form an EnergyPlus measure can be a large block of IDF text with variables setup where desired.

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Did you think the airflow network group it's difficult for create the measure? That maybe it requires a large programming knowledge?

Thank you again

Caroline gravatar imageCaroline ( 2015-06-10 13:17:33 -0500 )edit

@Jason DeGraw@David Goldwasser Can I ask what is the status with the OpenStudio the AFN? I have nearly finished writing the AFN into the Honeybee run energy plus component however I would rather write it using the Open Studio SDK since the Honeybee team plans to transition everything over to Open Studio.

antonszilasi gravatar imageantonszilasi ( 2016-04-12 17:40:52 -0500 )edit

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Asked: 2015-06-10 12:27:49 -0500

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Last updated: Jun 10 '15