ivanadriane's profile - activity

Hi all,

I am dealing with an energy model where we have a pretty complex plant, using a bunch of different heating, cooling, and thermal sharing technologies and staging the equipment based on when it is most efficient to use it.

We have intially modeled the building in IES-VE. My question is, can we use energy plus to model the plant with 8760 heating/cooling loads from IES-VE?

Thanks

Can you use load data and model a plant separately in E+? Hi all, I am dealing with an energy model where we have a pre

Modeling Separate Ventilation System (eQuest) Hi all, I am trying to model a system serving a residential unit in eQues

I was able to debug it by looking through my options. Turns out the window selection I had for some of the cases had been corrupted (the autocalculated values were not being calculated). I just readjusted my case for window areas and the model successfully ran.

Hi All,

I am currently running Beopt with multiple cases. Each case has minor geometry changes and different design options selected. The first two cases fail to run, while the other 10 run successfully. The error I am receiving is:

1.xml: Error: Invalid xml File.

Has anyone run into this issue with Beopt 2.7 and found a fix?

Thanks!

@mdahlhausen - this is also the solution I came up with. I guess "adding custom meters into another custom meter" may not be an option.

I am running into an issue with the energyplus property Meter:Custom. I have a building that has residential portion and commercial - and I am creating two separate meters so that I can assign different rate structures.

The issue I am running into is in creating the residential meter. Essentially in order to create the residential meter I created individual meters for each end use for all my residential thermal zones. I then tried to add all my individual residential end use meters into a custom ResidentialElectric meter. Example below:

Meter:Custom,
  ResidentialLighting,
  Electricity,
  ResZone-1,
  Lights Electric Energy;

Meter:Custom,
  ResidentialRecepticle,
  Electricity,
  ResZone-1,
  Electric Equipment Energy;

Meter:Custom,
  ResidentialHeating,
  Electricity,
  CoilHtg_ResZone-1,
  Heating Coil Electric Energy;

Meter:Custom,
  ResidentialElectric,
  Electricity,
  ,
  ResidentialLights,
  ,
  ResidentialRecepticle,
  ,
  ResidentialHeating;

Now - when checking the mtd file i see that all the variables set in meters ResidentialLighting, ResidentialRecepticle, and ResdientialHeating are all there. But the meter ResidentialElectric is blank - and when output in the meter.csv file shows 0 energy.

My understanding is that a custom meter has the same property as any other meter. I was wondering if anyone has had experience in creating a custom meter that adds other custom meters, or if this is even a possibility.

I am running into an error with the open studio forward translator. When exporting a model to SDD, I receive an error stating that the floor print cannot be computed.

When opening the XML file in CBECC-Com, the polyloop for that space has no coordinates. But the floors in the space and all other surfaces are successfully translated.

In my example model, the space that is having an issue has two floor surfaces. The exposed floor surface has an outside boundary condition while the interior floor surface is adiabatic.

When i delete the lines separating the exposed floor and have the space with only 1 floor surface, then the error goes away and the SDD export successfully translates the foot print.

In my model I have multiple spaces that have multiple floor surfaces. Out of about 150 spaces , 4 of them run into this issue. I am attaching an example model where I have isolated one of the spaces with the issue.

Has anyone run into this floor print error or has found a solution. I can't seem to figure out why the floor print for certain spaces cannot be translated in the xml model.

Any help is appreciated.

Hello,

I was wondering what the significance is of accurately assigning space types in OpenStudio. Do the built in space types assign different loads (such as people, lighting equipment, interior electrical equipment, etc.)

The reason I ask is because the default space types seems very limited. In my model I have a gym, parking lot, mailroom, etc. The library does not have comparable space types in which I could use. In this case do I have to manually assign my loads?

I download a prototype model for a large office space from the DOE website and opened the .idf file in sketchup using the openstudio plugin. When the model opened in sketchup i was met with this error:

After bypassing the error I proceeded to assign a construction set and save the model anyway as an OSM file and use the openstudio application to open it. In the application I selected the appropriate climate zones and design days. After that I tried to run a simulation assuming the .idf file already has construction sets, mechanical systems, thermal zones, etc. assigned. When running the simulation I got 10 errors:

Does anyone have any suggestions on how to simulate the idf files from the DOE website in the openstudio application?

Hi, I am working on my first project in OpenStudio and turns out my model is an 89 story building. I was wondering if there is a function in OpenStudio that would allow me to use a zone multiplier. Many of the stories in my building have reiterating geometries as well as identical boundary conditions, I was wondering if there was a way I could group these spaces and use a zone multiplying function in OpenStudio when doing my analysis.

The reason for this is that the 89 story model also has about 1,200 individual spaces which makes the OpenStudio plug-in run incredibly slowly in Sketchup.

Thanks for your help.