OpenStudio Results - Exterior Lighting correct? - Unmet Hours

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OpenStudio Results - Exterior Lighting correct?

asked 9 years ago

Matt Koch
1998 ●3 ●19

updated 9 years ago

flag of United States of America

10177 ●1 ●19 ●26 https://www.nrel.gov/b...

Hi,

I am using the Exterior Equipment in the Facility Tab to specify exterior lighting at 6,698 W. It is running 12 hours a day 365 days a year so uses approximately 2,444.8 kWh/month or 29,337.2 kWh/y. Yet, OpenStudio Results Exterior Lighting is reporting this as 29.34 kWh (presumably per year - there really should be an "Annual" annotation if that is so). Am I misinterpreting this number - is it referring to some period other than a year?

Thanks,

Matt

Comments

Note that the annual exterior lighting consumption can also be found in the OpenStudio report under Monthly Overview and then expanding the "Electricity Consumption (kWh) - view table". Exterior Lighting will be a row in that table with an annual (as well as monthly) values.

shorowit ( 8 years ago )

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answered 9 years ago

flag of United States of America

10177 ●1 ●19 ●26 https://www.nrel.gov/b...

updated 9 years ago

The OpenStudio Results are produced by a measure that gets values from the EnergyPlus results, so check the Lighting Summary report there for the real values.

It looks like the measure is incorrectly doing a conversion here, which may be happening if you're converting the results to IP units.

FYI @David Goldwasser

Comments

Good catch, I'll fix both the unit conversion and extend the label to specify consumption as annual. https://github.com/NREL/OpenStudio/is...

David Goldwasser ( 9 years ago )

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Asked: 9 years ago

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Last updated: Apr 28 '16

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