.AixLib.Controls.HVACAgentBasedControl.CostFunctions.Exergy.MixingValveAndHEX_ExergyDestruction_Simplified

Information

Overview

• This model determines the exergy destruction of a mixing valve and a heat exchanger based on the inputs of the component.
• It is used together with an IntermediateAgent.

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.

Revisions

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