.Buildings.HeatTransfer.Data.BaseClasses.Material

Information

Base record for materials that declares the thermal properties.

The specific heat capacity can be zero, in which case the material will be modeled as a thermal resistor that does not store energy.

Note that the thermal resistance is in units of m² K ⁄ W and not K ⁄ W because this record does not have the surface area as a parameter. The surface area will be defined in the model of the construction that uses this material. This allows use of the same material in walls, floors and ceilings of different surface area.

Revisions

• December 10, 2022, by Michael Wetter:
  Corrected annotation to avoid comparison for equality using real-valued parameter.
  See also IBPSA, #1671.
• March 1, 2016, by Michael Wetter:
  Removed test for equality of Real variables. This is for issue 493.
• May 21, 2015, by Michael Wetter:
  Reformulated to reduce use of the division macro in Dymola. This is for issue 417.
• May 30, 2014, by Michael Wetter:
  Removed undesirable annotation Evaluate=true.
• June 3 2010, by Michael Wetter:
  Implemented adaptive computation of number of states based on a reference construction of 0.2 m concrete.
• March 6 2010, by Michael Wetter:
  First implementation.