THERM has three basic components:
Graphic User Interface
THERM has standard graphic capabilities associated with the Microsoft Windows operating system. For example, THERM allows you to use:
THERM has powerful drawing capabilities that make it easy to model the geometry of the cross section of a building component.
You can use two methods to draw a cross section:
The following thermal properties must be defined for the cross section geometry:
THERM uses two-dimensional (2D) conduction and radiation heat-transfer analysis based on the finite-element method, which can model the complicated geometries of fenestration products and other building elements. This method requires that the cross section be divided into a mesh made up of nonoverlapping elements. This process is performed automatically by THERM using the Finite Quadtree method. Once you have defined the cross sections geometry, material properties, and boundary conditions, THERM meshes the cross section, performs the heat-transfer analysis, runs an error estimation, refines the mesh if necessary, and returns the converged solution.
The results from THERMs finite-element analysis of a fenestration product or building component can be viewed as: