A Comparison of the Dynamic Temperature Responses of Two Different Heat Exchanger Modelling Approaches in Simulink Simscape for HVAC Applications

Samuel Fux, Babak Mohajer, Stefan Mischler

2023

Abstract

In the HVAC industry, the dynamic temperature response of water-to-air heat exchangers is of particular importance for control system design. In this paper, the dynamic temperature responses of two established thermal dynamic modelling approaches for heat exchangers, the single-segment modelling using the effectiveness-NTU method and the multi-segment modelling, are investigated. Both approaches are validated against experimental data recorded with two different heat exchangers used in HVAC systems. A quasi-static analysis reveals minor differences between the results of the two models considered. The dynamic analysis is performed with varying inlet conditions. First results show that the single-segment model may fail to properly reproduce the water outlet temperature dynamics of a heat exchanger under certain conditions. In the tests performed in this study, however, the multi-segment model captures the relevant dynamics. The influence of this difference in the dynamic behaviour of the single-segment model on the model-based development of control algorithms is subject of future studies.

Paper Citation

in Harvard Style

Fux S., Mohajer B. and Mischler S. (2023). A Comparison of the Dynamic Temperature Responses of Two Different Heat Exchanger Modelling Approaches in Simulink Simscape for HVAC Applications. In Proceedings of the 13th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH; ISBN 978-989-758-668-2, SciTePress, pages 417-424. DOI: 10.5220/0012132300003546

in Bibtex Style

@conference{simultech23,
author={Samuel Fux and Babak Mohajer and Stefan Mischler},
title={A Comparison of the Dynamic Temperature Responses of Two Different Heat Exchanger Modelling Approaches in Simulink Simscape for HVAC Applications},
booktitle={Proceedings of the 13th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH},
year={2023},
pages={417-424},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012132300003546},
isbn={978-989-758-668-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 13th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH
TI - A Comparison of the Dynamic Temperature Responses of Two Different Heat Exchanger Modelling Approaches in Simulink Simscape for HVAC Applications
SN - 978-989-758-668-2
AU - Fux S.
AU - Mohajer B.
AU - Mischler S.
PY - 2023
SP - 417
EP - 424
DO - 10.5220/0012132300003546
PB - SciTePress