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Open AccessArticle

Outdoor Test Cell Modelling with Modelica

1
Competence Centre Building Envelope, Institute of Civil Engineering, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, CH-6048 Horw, Switzerland
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Competence Centre Thermal Energy Storage, Institute for Mechanical Engineering and Energy Technology, Institute for Natural Sciences and Humanities, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, CH-6048 Horw, Switzerland
*
Author to whom correspondence should be addressed.
Buildings 2019, 9(10), 209; https://doi.org/10.3390/buildings9100209
Received: 26 August 2019 / Revised: 20 September 2019 / Accepted: 23 September 2019 / Published: 25 September 2019
The experimental setup implements a simplified PASSYS test cell construction, which is combined with a detailed simulation to reduce measurement effort. To analyze the cell’s dynamic behavior, the test cell was closely monitored with thermal sensors, and different static and dynamic heating modes were applied during a three-week calibration period. Co-heating tests were performed for steady-state measurements and cyclic heating periods account for the transient behavior of the test cell. The cells response was compared to the results of transient simulations with the software packet Modelica. The equation based Modelica framework allowed a detailed transient thermal simulation of the test cell’s dynamic to be set up that shows close agreement with the measurements. In addition, the flexibility of Modelica allowed unforeseen events affecting the experimental setup to be replicated, thereby ensuring an uninterrupted heat flow history of all surfaces. More than 96% of the predicted air temperatures (1 min resolution) match the experimental values within an error band of ±1.5 K, and 90% of all predictions are within ±1.0 K. View Full-Text
Keywords: outdoor test cell; building dynamic simulations; experimental validation; real-world test system; monitoring data; Modelica outdoor test cell; building dynamic simulations; experimental validation; real-world test system; monitoring data; Modelica
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MDPI and ACS Style

Wüest, T.; Schuetz, P.; Luible, A. Outdoor Test Cell Modelling with Modelica. Buildings 2019, 9, 209.

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