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Higher cooling demand in the west/east orientation- compared to south!

asked 2024-02-29 01:19:57 -0500

updated 2024-03-02 20:22:29 -0500

Hi all,

I was wondering if anyone could please assist me with he following question. More specifically, I'm working on a single office space model (to be used as a baseline for further testing purposes) - located in Golden, Colorado. This model is cooling dominant north oriented, while a single window is located on it's south wall). However, I'm not sure why switching the orientation of that model - from north to west or east- would cause increase in cooling end-use. It seems to be odd, as basically in the north hemisphere, the highest cooling demand is expected for the case when the window is located on the south wall.

Please find the idf files for all four directions here.

Also, a screenshot of the model is presented here: C:\fakepath\Office Space.png

Any thoughts will be greatly appreciated. Thanks!

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answered 2024-03-05 08:06:19 -0500

Buildings have many interactive effects, and sometimes the results of simulations do not match your intuition. When this happens, you should dig into the numbers and see what is going on. I would start by double checking that the building models are really identical except oriention. Then I would suggest looking at the Sensible Heat Gain Summary report in the tabular output file. You may need to look at hourly output results to really get a deep understanding of why the results are the way they are.

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Asked: 2024-02-29 01:19:57 -0500

Seen: 164 times

Last updated: Mar 05