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Research Article

Modeling of active beam units with Modelica

Alessandro Maccarini1( ), Göran Hultmark2, Anders Vorre2, Alireza Afshari1, Niels C. Bergsøe1
Aalborg University, Danish Building Research Institute, Denmark
Lindab A/S, Denmark
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Abstract

This paper proposes an active beam model suitable for building energy simulations with the programming language Modelica. The model encapsulates empirical equations derived by a novel active beam terminal unit that operates with low-temperature heating and high-temperature cooling systems. Measurements from a full-scale experiment are used to compare the thermal behavior of the active beam with the one predicted by simulations. The simulation results show that the model corresponds closely with the actual operation. The model predicts the outlet water temperature of the active beam with a maximum mean absolute error of 0.18 °C. In term of maximum mean absolute percentage error, simulation results differ by 0.9%. The methodology presented is general enough to be applied for modeling other active beam units.

Keywords

modelingbuilding energy simulationactive beamsModelica

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Building Simulation
Volume 8 Issue 5,
October 2015
Pages 543-550
DOI: 10.1007/s12273-015-0236-5
Cite this article:
Maccarini A, Hultmark G, Vorre A, et al. Modeling of active beam units with Modelica. Building Simulation, 2015, 8(5): 543-550. https://doi.org/10.1007/s12273-015-0236-5

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Received: 10 November 2014
Revised: 04 May 2015
Accepted: 18 May 2015
Published: 05 June 2015
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015
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