Why does setting 'swh_src' to 'NaturalGas' results in errant ee-model outputs?

asked 2021-11-22 18:13:53 -0600

rimas-maalka's avatar

updated 2021-11-24 09:36:12 -0600

For the same building:

If 'swh_src' is set to 'Electricity' then the measures in ee-model yield reasonable results (i.e. 'Reduce Lighting Loads by 30%' results in an overall lower annual energy consumption' as compared to calibration best fit data point).

However, if 'swh_src' is set to 'NaturalGas', then all measures in ee-model seem to yield increased energy consumption (i.e. 'Reduce Lighting Loads by 30%' results in significantly higher annual energy consumption' as compared to calibration best fit data point).

Specifically, 'interior_equipment' end use significantly increases (~2.5x increase) with every ECM applied in ee-model when swh_src is natural gas and decreases (~2.5x decrease) when swh_src is electric.

With all other input parameters constant (e.g. calibration year, weather files, building attributes), why does the difference in 'swh_src' consistently yield these issues?

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@rimas-maalka can you include a link to this ee-model tool that you are using? Is this based on using OpenStudio measures to apply the ECMs?

Aaron Boranian's avatar Aaron Boranian  ( 2021-11-23 10:48:24 -0600 )edit

Hi aaron, yes it is using the OpenStudio ee-model measures lib: https://github.com/NREL/openstudio-ee.... I have the in.osm files if that helps

rimas-maalka's avatar rimas-maalka  ( 2021-11-23 15:35:18 -0600 )edit

I've confirmed that this happens every time for the ee-model measures. @aaron I'm not sure how to '@' mention you on this site, as it doesn't trigger any mentioning capability.

rimas-maalka's avatar rimas-maalka  ( 2021-11-29 14:04:56 -0600 )edit