modelBoiler_ExergyDestruction_Simplified

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Extends from HVACAgentBasedControl.BaseClasses.PartialCostFunction.

Information

Overview

  • This model determines the exergy destruction of a boiler based on the inputs of the component.
  • It is used together with a HeatProducerAgent.

Concept

Instead of a calculation with the help of inflowing and outflowing enthaplies, this cost function calculates the exergy product based on a heat flux. The estimation of the average temperature of the heat flux causes a small uncertainty compared to the other approach. However, this cost function leads to a more stable and reliable simulation. Details can be found in the reference.

References

  • Felix Bünning. Development of a Modelica-library for agent-based control of HVAC systems. Bachelor thesis, 2016, RWTH Aachen University, Aachen, Germany.

Parameters

TypeNameDefaultDescription
RealT_0298.15Exergy reference temperature
Realeta0.84Overall efficiency of the boiler

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealInputcapacity (from PartialCostFunction)Input to connect with ProducerAgent
Modelica.Blocks.Interfaces.RealOutputcost (from PartialCostFunction)Output to connect with ProducerAgent
Modelica.Blocks.Interfaces.RealInputT_circuit

Components

TypeNameDefaultDescription
Modelica.Blocks.Math.Divisiondivision
Modelica.Blocks.Sources.RealExpressionrealExpression
Modelica.Blocks.Math.Divisiondivision1
Modelica.Blocks.Sources.RealExpressionrealExpression1
Modelica.Blocks.Math.Addadd
Modelica.Blocks.Sources.RealExpressionrealExpression3
Modelica.Blocks.Math.Productproduct
Modelica.Blocks.Math.Addadd1
Modelica.Blocks.Math.Gaingain
Modelica.Blocks.Math.Maxmin
Modelica.Blocks.Sources.RealExpressionrealExpression2

Revisions

  • October 2015, by Felix Bünning: Developed and implemented
  • December 2016, by Roozbeh Sangi:
    revised