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

Revision history [back]

Why do we need 7 design days ?

Whenever I import a DDY file into OpenStudio, I am able to see 7 design days. 4 for summer and 3 for winter. Why do we need 7 design days ? what is the significance of this? Isnt one design day for summer and one for winter sufficient ?

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.