Unit Model

Unit Model#

Unit models represent pieces of equipment and their processes. These models contain the unit performance constraints and associated variables for the equipment, such as:

  • constraints relating balance terms to physical phenomena or properties (e.g. relating extent of reaction to reaction rate and volume)

  • constraints describing flow of material into or out of unit (e.g. pressure driven flow constraints)

  • unit level efficiency constraints (e.g. relating mechanical work to fluid work)

IDAES includes libraries of UnitModel classes. These models are composed of the following components:

  1. ControlVolumeBlocks, which represent volume of material over which we wish to perform material, energy and/or momentum balances

  2. StateBlocks and ReactionBlocks, which represent the thermophysical, transport and reaction properties of the material at a specific point in space and time

  3. Inlets and Outlets, which allow UnitModels to connect to other UnitModels