Question-and-Answer Resource for the Building Energy Modeling Community

Get started with the Help page

3

OpenStudio Results - Exterior Lighting correct?

asked 2016-04-28 07:39:34 -0600

Matt Koch
1998 ●3 ●17

updated 2016-04-28 09:19:25 -0600

flag of United States of America

10147 ●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

edit retag flag offensive close merge delete

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 ( 2016-05-13 18:07:52 -0600 )edit

1 Answer

Sort by » oldest newest most voted

3

answered 2016-04-28 09:13:02 -0600

flag of United States of America

10147 ●1 ●19 ●26 https://www.nrel.gov/b...

updated 2016-04-28 09:53:14 -0600

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

edit flag offensive delete link

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 ( 2016-04-28 09:41:27 -0600 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2016-04-28 07:39:34 -0600

Seen: 155 times

Last updated: Apr 28 '16

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

Powered by