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Has anyone validated the DOE Reference Building Measure?

asked 2019-03-07 07:47:19 -0500

Vaclav gravatar image

I used the OpenStudio measure "Create DOE Prototype Building" for a medium and large office buildings, but found that the site EUIs vary widely from the EUI summary table on DOE's website. Specifically, I ran both buildings for the 90.1-2013 standard and 4A climate zone without any further modifications and got a 35% lower EUI for the medium office building and 240% higher EUI for the large office building, compared to the DOE summary table EUIs.

Has anyone else come across this issue? Are there any best-practice suggestions for using this measure to avoid such an issue? Has this measure been validated or is it still under active development?

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answered 2019-03-07 11:10:32 -0500

See the answer to this question about the DOE Prototype buildings.

The link you reference is for ASHRAE 90.1-2004, Post-1980, and Pre-1980, not ASHRAE 90.1-2013. Also, PNNL updated the models from the version you referenced: PNNL, Enhancements to ASHRAE Standard 90.1 Prototype Building Models, April 2014. Most importantly, the updated included adding a data center to the Large Office model which explains the much higher EUI. The lower medium office building EUI is explained by the new code version.

Both the PNNL reference buildings and theCreate DOE Prototype Building measure are under active development (e.g. recently switching to ASHRAE 169-2013 instead of ASHRAE 169-2006 for design days), but should be very close.

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answered 2019-05-11 19:20:43 -0500

Using the "create DOE Prototype Building" measure for the existing post-1980 large office in San Francisco I get an EUI of 55 kbtu/ft2, about 17% higher than the summary table for the original reference model in this location. (Also, just running the file in E+ v 9.1, after updating from v7.2, I get a 10% lower EUI than in DOE's summary table).

So it does not seem that this measure is currently working too well.

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Are you using the newer model with the detailed space plan? Or the older model that has only zone level loads?

__AmirRoth__ gravatar image__AmirRoth__ ( 2019-05-12 12:49:01 -0500 )edit

HI Amir, do you mean the 90.1 models?

I just checked, and the measure does match well for those.

I was referring to Version 1.4_7.2 updated November 13, 2012

Hayes Zirnhelt gravatar imageHayes Zirnhelt ( 2019-05-12 13:09:29 -0500 )edit

The newer large office model contains a data center, which mostly explains the higher EUI.

mdahlhausen gravatar imagemdahlhausen ( 2019-05-13 15:58:45 -0500 )edit
1

Ok, that's sort of confusing. So when you run the 'create DOE prototype building' for post-1980 it adds a data center similar to the newer PNNL 90.1 reference models, even though there isnt one in the 'post-1980' DOE reference model.

Hayes Zirnhelt gravatar imageHayes Zirnhelt ( 2019-05-13 16:07:21 -0500 )edit
1

I also noticed this measure is creating natural gas powered elevators, which is interesting!

Hayes Zirnhelt gravatar imageHayes Zirnhelt ( 2019-05-16 16:59:49 -0500 )edit

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Asked: 2019-03-07 07:47:19 -0500

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Last updated: May 11