Article | Proceedings of the 10<sup>th</sup> International Modelica Conference; March 10-12; 2014; Lund; Sweden | Advanced Hybrid Model for Borefield Heat Exchanger Performance Evaluation; an Implementation in Modelica
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Title:
Advanced Hybrid Model for Borefield Heat Exchanger Performance Evaluation; an Implementation in Modelica
Author:
Damien Picard: KU Leuven, Department of Mechanical Engineering, Division of Applied Mechanics and Energy Conversion, Heverlee, Belgium Lieve Helsen: KU Leuven, Department of Mechanical Engineering, Division of Applied Mechanics and Energy Conversion, Heverlee, Belgium
DOI:
10.3384/ecp14096857
Download:
Full text (pdf)
Year:
2014
Conference:
Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden
Issue:
096
Article no.:
089
Pages:
857-866
No. of pages:
10
Publication type:
Abstract and Fulltext
Published:
2014-03-10
ISBN:
978-91-7519-380-9
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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Accurate and computationally efficient borefield models are important components in building energy simulation programs. They have not been implemented in Modelica so far. This paper describes the implementation of an innovative approach to model borefields with arbitrary configuration having both shortterm (minutes) and long-term accuracy (decades) into Modelica. A step response is calculated using a combination of a short-term response model which takes into account the transient heat transfer in the heat carrier fluid; the grout and the immediately surrounding ground; and a long-term response model which calculates the boreholes interactions. Moreover; an aggregation method is implemented to speed up the calculations. Validation shows good results and very high computational efficiency.

Keywords: Borefield; short- and long-term; Modelica; Aggregation method

Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Author:
Damien Picard, Lieve Helsen
Title:
Advanced Hybrid Model for Borefield Heat Exchanger Performance Evaluation; an Implementation in Modelica
DOI:
http://dx.doi.org/10.3384/ecp14096857
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Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Author:
Damien Picard, Lieve Helsen
Title:
Advanced Hybrid Model for Borefield Heat Exchanger Performance Evaluation; an Implementation in Modelica
DOI:
http://dx.doi.org/10.3384/ecp14096857
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