Therm Analysis

Two-Dimensional Building Heat-Transfer Modeling

THERM is a state-of-the-art computer program developed at Lawrence Berkeley National Laboratory (LBNL) for heat transfer analysis of building components and assemblies. Using THERM, we can model two-dimensional heat-transfer effects in building components such as windows, walls, foundations, roofs, and doors where thermal bridges are of concern. THERM's heat-transfer analysis allows us to evaluate a product's energy efficiency and local temperature patterns, which may relate directly to problems with condensation, moisture damage, and structural integrity.

THERM's two-dimensional conduction heat-transfer analysis is based on the finite-element method, which can model the complicated geometries of building products. 

THERM can be used with the Berkeley Lab WINDOW program. THERM's results can be used with WINDOW's center-of-glass optical and thermal models to determine total window product U-factors and Solar Heat Gain Coefficients. 

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