Here's a list of the resources I would investigate:
The materials in (2) are available in the OpenStudio via:
Also, the OpenStudio API can be used to get components from the BCL. See these previous questions for more information:
Hi, Appendix A (Tables 3.1) in ASHRAE 90.1 has information on the relation between equivalent U-values and R values of wall sections. By general definition, U-value is the ratio of the conductivity to the thickness of a material, and R-value is the reciprocal of the U-value. Hope this answers your question.
In case you do not have easy access to 90.1. The reference appendices for Title 24 Section 6 include tables giving the U-Values for different wall and roof assemblies developed using the approach outlined in the 2009 ASHRAE Handbook of Fundamentals.
http://www.energy.ca.gov/2012publicat...
starting on pdf page 137
The U value takes into the account the film coefficients on the outside and the inside. For complex walls and roofs, with thermal bridges, there is a publication of ASHRAE that lists numerous structures with their U values, sorry I dont have the reference at hand.
Asked: 2016-10-17 08:35:23 -0600
Seen: 5,214 times
Last updated: Oct 18 '16
