Add Glazing

Hello everybody,

I encountered an annoying problem with glazing.

I want to use the component Add Glazing in order to define all the glazed surface by myself (and not based on ratio). I succeeded in defining :

- HB surface (which is the surface on which the window is situated)

- childsurfaces (the glazed surface)

But I don't know what's next. Could you help me solving this problem ?

If you have any better ideas to define the Glazing, don't hesitate !

Thank you in advance for your answers !

Cheers

Réda

Replies are closed for this discussion.

Replies to This Discussion

Permalink Reply by Aaron Loomans on September 8, 2014 at 2:20pm

Hi all,

I'm looking to run a basic thermal performance simulation, with an intended end result of analyzing heat flow on the glazing. Eventually I want to do this on non-planar surfaces, however for now I'm just trying it on simple planar geometry as I'm new to this and just want to get the basics down. I've set my geometry up similar to the posts in this discussion with the only addition being the EPconstruction to the glass. However when I bring the surface together I get a null HBzone and I'm wondering why that is. Also do the same principles apply with this as they do to irregular geometries. Such as do I have to always use 3 or more walls plus a groundplane and ceiling to create a zone, or can I use 1 or 2 non planar ribbon walls that wrap plus the groundplane and ceiling to create a zone?

Permalink Reply by Mostapha Sadeghipour Roudsari on September 8, 2014 at 2:25pm

Aaron,

I am sorry that you are having so many problems to get started with Honeybee. I would suggest you to post your definition instead of the screenshot so it will be easier to help you. I will reply to your discussions later this evening.

Mostapha

Permalink Reply by Aaron Loomans on September 8, 2014 at 3:29pm

Mostapha,

Apologies for the many questions and issues that I'm running into, your quick response and patience with my problems is much appreciated. Attached first is the gh and 3dm file associated with my initial screenshot (just simply trying to create a zone from surfaces). The next gh and 3dm file are of the more irregular geometries that I'm trying to make into zones to run thermal analysis on.

Thank you so much!

Aaron

Attachments:

Permalink Reply by Aaron Loomans on September 8, 2014 at 3:30pm

gh irregular

Attachments:

ExampleAnalysis_Honeybee2.gh, 260 KB

Permalink Reply by Mostapha Sadeghipour Roudsari on September 8, 2014 at 6:20pm

Hi again Aaron,

No worries. As I said I totally understand that we don't have enough resources and it can be really hard to get started. The good news is as soon as you understand the logic behind Honeybee it is pretty straight forward.

So I started with the hard one. There were minor mistakes/bad practices in the file that i fixed in Grasshopper file. There was also a modeling issue with the way you had the window modeled. In EnergyPlus windows (child surfaces) cannot touch the edge of the walls (parent surfaces). I trimmed the glazing surfaces and now it works fine.

I also have a recommendation for you to simplify your geometry. Honeybee is capable of exporting geometries like yours to EnergyPlus but simulation will take very long as EnergyPlus is not really designed for complex geometries. I will check your simple case soon.

Cheers,

Mostapha

Attachments:

ExampleAnalysis_Honeybee2_msr.gh, 285 KB

Permalink Reply by Aaron Loomans on September 9, 2014 at 11:01am

Thanks Mostapha,

Everything works now and I ran a simulation through the energyplus component. My question now is: energyplus had to break up the curved geometry in order to run it through the simulation, and the output returned with 141 surfaces because that, but how do I identify where each of those surfaces is located in the model (ie: where exactly is GLZSRF_64_SRF_DUP_GLZP_64 located within the 3d geometry?). I initially thought that the Honeybee_Label Zone surfaces would do this but it doesn't seem to work for the (formerly) curved geometry, is that true?

Best,

Aaron

Permalink Reply by Mostapha Sadeghipour Roudsari on September 10, 2014 at 8:33pm

Hi Aaron,

EnergyPlus cannot handle nonplanar surfaces and so many other stuff, which Honeybee has to take care of and make the geometry understandable for EP.

You can find where the surface is by importing back the .idf file into Grasshopper (using import idf) or by opening the .idf file in other tools such as OpenStudio. We are working on a component that will let you bring the results in for nonplanar surfaces but it is not ready yet (https://github.com/mostaphaRoudsari/Honeybee/issues/171).

That is why I made the recommendation to simplify your input geometry then you can easily trace the results plus it won't really make a huge difference in the results of energy model and it will run much faster.

Mostapha

Permalink Reply by Mostapha Sadeghipour Roudsari on September 8, 2014 at 6:28pm

Here is the other one! Similar mistakes in material and construction definition and also in an energy model you need to add the window to parent surface. Check the attached file.

Mostapha

PS: For cases like this it is much easier to use Mass2Zone and addGlzBasedOn%.

Attachments: