modelBoilerPolynomial

Boilers with efficiency specified by polynomial and with open loop control
Diagram of BoilerPolynomialOpen the diagram
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Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

This example demonstrates the open loop response of the boiler model for a control signal that is first a ramp from 0 to 1, followed by a step that switches the boilers off and then on again. The instances of the boiler models are parameterized so that boi1 is a dynamic model and boi2 is a steady-state model.

Parameters

TypeNameDefaultDescription
Modelica.Units.SI.PowerQ_flow_nominal3000Nominal power
Modelica.Units.SI.TemperaturedT_nominal20Nominal temperature difference
Modelica.Units.SI.MassFlowRatem_flow_nominalQ_flow_nominal/dT_nominal/4200Nominal mass flow rate
Modelica.Units.SI.PressureDifferencedp_nominal3000Pressure drop at m_flow_nominal

Components

TypeNameDefaultDescription
Buildings.Fluid.Sources.Boundary_pTsinSink
Buildings.Fluid.Sources.Boundary_pTsou
Modelica.Blocks.Sources.TimeTabley
Buildings.Fluid.Boilers.BoilerPolynomialboi1Boiler
Buildings.HeatTransfer.Sources.FixedTemperatureTAmb1Ambient temperature in boiler room
Buildings.Fluid.Boilers.BoilerPolynomialboi2Boiler
Buildings.HeatTransfer.Sources.FixedTemperatureTAmb2Ambient temperature in boiler room

Contents

NameDescription
MediumMedium model

Revisions

  • January 22, 2016, by Michael Wetter:
    Corrected type declaration of pressure difference. This is for #404.
  • December 22, 2014 by Michael Wetter:
    Removed Modelica.Fluid.System to address issue #311.
  • April 27, 2013, by Michael Wetter:
    Removed first order filter from the output of the table. This is not needed and leads to a dynamic state selection.
  • November 1, 2011 by Michael Wetter:
    First implementation.