Jason DeGraw's profile - activity

No, there's nothing wrong with the IDF. There was a bug in input processing that didn't always get hit, so the testing t

No, there's nothing wrong with the IDF. There was a bug in input processing that didn't always get hit, so the testing t

No, there's nothing wrong with the IDF. There was a bug in input processing that didn't always get hit, so the testing t

Hmmm, well, it did get tested with more than one at one time, but I'll see if I can figure out what is happening.

If you really need the original file, then it can be found in the repo history here: https://github.com/NREL/OpenStudio

Is there a way to use a unitary system with an air flow network? I am trying to develop a measure that will build an air

@jrmuller When we did the AFN integration 5 or 6 years ago it was not fancy and the focus was on the non-distribution pa

Presumably the additional energy use is due to the increased infiltration, but I am not aware of anything in AFN that wo

I've made the change you indicated and tested with the latest release (22.1) and with my build of the in-development cod

I've made the change you indicated and tested with the latest release (22.1) and with my build of the in-development cod

@yoshiwara Thanks for adding the link to the file, it appears that you changed the flow rate in a few more places than I

I've made the change you indicated and tested with the latest release (22.1) and with my build of the in-development cod

@the_donn the exact details are going to depend on how you answer Aaron's question above, but AFAIK AirflowNetwork objec

@Mariam always happy to help!

Here are some answers, happy to clarify if needed: MultizoneWithoutDistribution will only use the pressure network sol

Based upon the description of what you're trying to model and your goal (close to representative of the real life scenar

@Mariam If you've done the CFD, processing those results should give you the the information needed to create an Airflow

Based upon the description of what you're trying to model and your goal (close to representative of the real life scenar

The Help says you now have sufficient karma to be able to upload the file, or at least add a link to it (e.g. a Dropbox

If you're trying to use a window on an internal surface, that could be the problem. I don't recall if it that is allowed

Download Older Versions of OpenStuido, v-2.5 Hello Does anyone know how it is possible to download older versions of Op

I'm not quite sure what all you changed, but it appears that you did the following things: Set the leap year flag in t

The general strategy here is to set up the AirflowNetwork objects so that the airflow through them at a given pressure d

There are going to be two fundamental ways to control the air flow with just basic objects. The first is to change the v

how can i control Air change rate when using AFN Air change rate values are very high got using the output variable name

If you're using version 8.5, then in order to control the year you should use the RunPeriod:Custom Range object. That ob

I'm not 100% sure what the error actually is, there are two places that write out that error in that format and I'm less

I'm pretty sure the linked issue is not the exact problem, as the internals have changed quite a bit between 8.9 and 9.4

I think it's actually correct, air flow per area would be: (m3/s)/m2 = m/s

When you say "automated test", what do you mean? A measure or a Ruby script?

@mafalda correia That sounds generally correct, though I think the details get important, and I'm no EMS expert.

Section 2.2.2 of COMIS Fundamentals is "Air Flow through Large Openings", and while its references are older there are a

@mafalda correia I'm still not sure I'd go with that exponent, but since your case is "virtual" it is probably OK.

@mafalda correia You are welcome. I'd check the average temperature in your EPW file and take into account the indoor te

@mafalda correia, that looks about right. Keep in mind that if the conditions you're modeling are different than the ref

If I understand your question correctly, you have set "Wind Pressure Coefficient Type" to SurfaceAverageCalculation and

If I understand your question correctly, you have set "Wind Pressure Coefficient Type" to SurfaceAverageCalculation and

Good questions. Here's what I would do: This one, I think, is a shortcoming of E+. Air walls are a new addition, and I

Did you do the addition of the node data with IdfEditor? I think that program still reads the IDD at runtime, so I belie

I'm not an expert on the stratified tank model, but I am pretty sure that the IDD is not processed at runtime by more re

I would do it with Python as opposed to Excel, Python's CSV module makes this sort of thing super easy. I'm no EMS exper

I would do it with Python as opposed to Excel, Python's CSV module makes this sort of thing super easy. I'm no EMS exper

I do believe that there are going to be ways to do this within EnergyPlus (probably involving EMS), but I'm not sure tha

I've used spreadsheets do do this in the past, but I can't seem to find one right now. But the calculation isn't to diff

The RunPeriod:CustomRange object was removed when the begin/end year fields were added, so you'll probably want to edit

There's probably not any missing data. That warning happens because OpenStudio is trying to figure out if the EPW that h