ThermalWall calculates some fundamental dynamic thermal characteristics for
an arbitrary wall composed of multiple homogeneous layers whose boundaries
are submitted to sinusoidal variations of temperature or heat flow rate. The
characteristics variables are: steady state thermal transmittance; time shift
of the periodic thermal transmittance; time shift between the maximum
temperature outside and inside; decrement factor. The physical quantities
treated and their numerical procedures are those defined in the European
Standard EN ISO 13786 December 2007. (in Business and Productivity)