Example of a building that uses an EMS actuator. The building
has three thermal zones that are simulated in EnergyPlus. In the
EnergyPlus model, the west-facing thermal zone has a window blind
that is open if its control signal is 0 or closed if it is
6. The control sequence obtains the room air temperature of
the west-facing zone from the Modelica instance
zonWes, and connects it to a hysteresis block that
switches its output to true if the zone temperature is
above 24°C, and to false if it drops below
23°C. The instance incBeaSou obtains from
EnergyPlus the incident solar beam radiation on the outside of the
window, and feeds it into a hysteresis block that outputs
true if its input exceeds 200 W/m2,
and switches to false if it drops below 10
W/m2. The instance actSha connects to the
EMS actuator in EnergyPlus that activates this shade. If both
outputs of the hysteresis blocks are true, then the
EnergyPlus shade actuator is deployed by setting the input of
actSha to 6. Otherwise, the input is set
to 0.
To the right of the model, there are three idealized cooling systems that keep the room air temperature below 25°C in each of the three zones. Also, each zone is connected to a constant, unconditioned outside air supply.
The internal heat gains are set to zero in Modelica because these are specified in the EnergyPlus model.
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Medium model |