Defining Human Boundary Conditions

You can specify several factors that contribute to a human model's comfort level, including clothing insulation, metabolic rate, and radiation behavior.

See Also
About Human Boundary Conditions
  1. From the Boundaries section of the action bar, click Human .
  2. Optional: Enter a descriptive Name.
  3. Select the surfaces that represent the human boundary.

    The surfaces you select do not need to be contiguous or to form a closed volume.

  4. Optional: Specify the surface-to-surface radiation behavior of the human surface. For more information, see Defining Surface-to-surface Radiation Behavior at a Wall.
  5. If you want to categorize the human model as part of a defined Human group, select the name of group.

    The human appears in the tree under the selected human group.

  6. If you want to define the human model without including it in a human group, do the following:
    1. Specify the Clothing insulation level, which is a measure of the thermal insulation provided by clothing.
    2. Specify the Met rate, or metabolic rate, to define the level of heat generation per unit area on the surface of the human model's body.

      Some common values are 0.7 met for a sleeping human, 1.0 met for a seated human, and 2.0 met for a walking human. Metabolic values for a variety of human activities are available in the ASHRAE Standard 55-2010 handbook.

    The human appears in the tree under the Human group category but not under any of its specific human group definitions.

  7. Optional: Specify the solar radiation behavior for the human surface. For more information, see Defining Solar Radiation Behavior at a Wall.
  8. Click OK.