BEopt Output - What am I Missing

asked 2023-02-01 18:43:53 -0600

Miles
11 ●2

updated 2023-02-02 09:39:26 -0600

Hi, In order to ask my question, I would like to upload a couple of screenshots, but I don't have enough points yet.

I created a Design, and created (3) Cases: Base, Windows, Exterior Rigid Foam. I'm trying to analyze different options: Window U-factor, Exterior Rigid Foam, etc. I have tried it A BUNCH of different ways: In Design Mode, Parametric, and Optimization. At first, I tried with BEopt version 3.0.0.0. And then I tried it with BEopt version 2.8.0.0. Sometimes with multiple things selected. For example, two types of windows. Sometimes with only (1) change per case.

With three Cases, shouldn't I get 3 points on the graph in the upper left, and 3 columns on the graph in the lower left? Each time I run it, I get less than that.

I have watched the BEopt training videos. I feel like I'm missing something simple. Is there a way to make it analyze these three different cases?

Thanks in advance for your help, Miles

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@Miles if you don't have enough karma points to attach an image, you can still upload image(s) to Flickr, Imgur, or something similar and then share the URL in this post so that others can access it.

Aaron Boranian ( 2023-02-01 21:02:15 -0600 )edit

Without seeing a screenshot or project file, it will be hard to help. You can also upload files to Google Drive or Dropbox.

shorowit ( 2023-02-02 09:01:05 -0600 )edit

Thanks @Aaron Boranian and @shorowit. I uploaded the images to Imgur. Here is a link: https://imgur.com/a/skymlOt

Miles ( 2023-02-02 10:06:13 -0600 )edit

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answered 2023-02-02 13:57:51 -0600

shorowit

11891 ●201 ●9 https://www.nrel.gov/b...

It looks like you are confusing Case tabs with Design tabs. Designs are intended to have different building features/components but share the same building geometry, location, utility rates, etc., whereas Cases can differ in any of these ways. So if you are looking to compare different sets of features for the same building geometry/location, then you generally want to use Designs.

In the sample file, there are four case tabs, and two of these cases are in Design mode. Each of those cases in Design mode will have an additional set of design tabs on the Options input screen. So the "what-ifs" Case has six designs ("base", "walls", etc.). Those six designs are shown on the output screen.

image description

In your file, there are three case tabs. Assuming they all have the same geometry and location, it sounds like you wanted them to be three designs within a single case. Then you would get an output with three results.

There is more description in the help file.

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Perfect. That's exactly what I'm doing wrong. I'll give it a try next time I have a moment. Thanks very much, Scott! :--)

Miles ( 2023-02-02 15:03:55 -0600 )edit

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