.Buildings.DHC.Loads.Steam.BuildingTimeSeriesAtETS

Information

This model is intended for existing steam district heating systems where the heating load at the energy transfer station (ETS) is availble as a time series data input. Thus, the building-side piping and equipement is not included in this model, as depicted below.

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Implementation

With the time series input, this model is configured such that the control volume (representing the steam side of the heat exchanger) has steady state energy and mass balances. The steam trap also has steady state balances by design. Meanwhile, the condensate return pump allows either dynamic or steady state balances. The mass flow rate at the pump is prescribed ideally such that the heat flow rate input from the time series is rejected at the control volume based on the physical laws.

References

Kathryn Hinkelman, Saranya Anbarasu, Michael Wetter, Antoine Gautier, Wangda Zuo. 2022. “A Fast and Accurate Modeling Approach for Water and Steam Thermodynamics with Practical Applications in District Heating System Simulation,” Energy, 254(A), pp. 124227. 10.1016/j.energy.2022.124227

Kathryn Hinkelman, Saranya Anbarasu, Michael Wetter, Antoine Gautier, Baptiste Ravache, Wangda Zuo 2022. “Towards Open-Source Modelica Models For Steam-Based District Heating Systems.” Proc. of the 1st International Workshop On Open Source Modelling And Simulation Of Energy Systems (OSMSES 2022), Aachen, German, April 4-5, 2022. 10.1109/OSMSES54027.2022.9769121

Contents

Name	Description
MediumSte	Steam medium
MediumWat	Water medium

Revisions

• September 15, 2023, by Kathryn Hinkelman:
  Added publication references.
• March 28, 2022, by Kathryn Hinkelman:
  Removed massDynamics.
  This is for issue 1542.
• March 2, 2022, by Kathryn Hinkelman:
  First implementation.