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

Get started with the Help page

2

optical properties of glass/ films

asked 2016-04-05 09:05:05 -0500

Mroy
117 ●5

updated 2016-04-06 11:13:57 -0500

flag of United States of America

4436 ●5 ●17 http://bleedinggreenna...

Does anybody know if EnergyPlus uses full (or partial) spectral properties of translucent materials and glass to calculate solar transmission (and associated gains)? Attached C:\fakepath\Spectral properties of polycarbonate.png for instance is the transmission of a poly-carbonate surface that I am modelling as a function of varying wavelength. I noticed that DesignBuilder (that I use as graphical interface) allows me to edit a fairly detailed spectral data library for fabric opening materials, and I am wondering if this gets used in E+ for simulations, as opposed to only static figures that asign a single value to infra-red, solar and visible properties of glass, films and polymers? Thanks a lot Roy

edit retag flag offensive close merge delete

Comments

Please tag your question with the software/engine you're asking about.

ericringold ( 2016-04-05 09:58:27 -0500 )edit

1 Answer

Sort by » oldest newest most voted

1

answered 2016-04-05 09:51:30 -0500

flag of United States of America

10512 ●30 ●8 https://www.nrel.gov/b...

Check out the inputs to the WindowMaterial:Glazing and the EnergyPlus Engineering Reference description of the Window Calculation Module. DesignBuilder uses EnergyPlus as the simulation engine, so the spectral data you're inputting is likely being used for complex fenestration calculations in EnergyPlus.

edit flag offensive delete link

Comments

Thanks a lot Eric. E+ can actually use the full spectral properties (outlined in Glazing System Properties - Window calculation model). M

Mroy ( 2016-04-11 10:01:11 -0500 )edit

Your Answer

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

Careers

Question Tools

1 follower

Stats

Asked: 2016-04-05 09:05:05 -0500

Seen: 294 times

Last updated: Apr 05 '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