During fall 2004, the old version of the ORNL Whole Wall R-value Calculator will be replaced by an updated new whole wall R-value calculation tool. The new calculator will be a part of the newly developed Interactive Envelope Materials Database for Whole-Building Energy Simulation Programs. It will offer many new advancements over the old tool, including the capability of whole wall calculations for complex residential buildings (fourteen new architectural details, three types of foundations, five shapes of floor plans, multistory building options, etc.).  The new material database will provide a direct link between existing hotbox testing results, advanced three-dimensional heat transfer simulations, and whole building energy analysis. Only hotbox tested wall systems will be represented in this new database.

New Features Include: