Article | The First Japanese Modelica Conferences, May 23-24, Tokyo, Japan | Advances of Zero Flow Simulation of Air Conditioning Systems using Modelica
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Title:
Advances of Zero Flow Simulation of Air Conditioning Systems using Modelica
Author:
Pieter Dermont: Modelon AB, Sweden Dirk Limperich: Daimler AG, Germany Johan Windahl: Modelon AB, Sweden Katrin Pr√∂lss: Modelon AB, Sweden Carsten K√ľbler: TWT GmbH, Germany
DOI:
10.3384/ecp16124139
Download:
Full text (pdf)
Year:
2016
Conference:
The First Japanese Modelica Conferences, May 23-24, Tokyo, Japan
Issue:
124
Article no.:
018
Pages:
139-144
No. of pages:
6
Publication type:
Abstract and Fulltext
Published:
2016-05-18
ISBN:
978-91-7685-749-6
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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This paper describes recent advances in simulation of zero flow conditions based on work with Daimler using the Air Conditioning Library from Modelon. The Air Conditioning Library is based on the open standard modelling language Modelica. Simulating refrigerant loops at (near) zero flow for large vapor compression cycles is challenging, due to the fast dynamics in the model under those conditions that drastically reduce the step size of the solver. Findings on solver selection and pressure drop correlations are presented. An approach to improve zero flow simulation based on a systematic analysis of heat transfer coefficients is suggested and demonstrated to increase simulation robustness under (near) zero flow conditions.

Keywords: air conditioning systems, zero flow, 1-D fluid modelling, dynamic simulation, numerical issues

The First Japanese Modelica Conferences, May 23-24, Tokyo, Japan

Author:
Pieter Dermont, Dirk Limperich, Johan Windahl, Katrin Pr√∂lss, Carsten K√ľbler
Title:
Advances of Zero Flow Simulation of Air Conditioning Systems using Modelica
DOI:
http://dx.doi.org/10.3384/ecp16124139
References:

Hubertus Tummescheit. Design and implementation of objectoriented model libraries using modelica. PhD thesis, Lund University, 2002.


Hubertus Tummescheit, Jonas Eborn, and Katrin Prolss. Airconditioning‚Äďa modelica library for dynamic simulation of ac systems. In 4th International Modelica Conference, 2005.

The First Japanese Modelica Conferences, May 23-24, Tokyo, Japan

Author:
Pieter Dermont, Dirk Limperich, Johan Windahl, Katrin Pr√∂lss, Carsten K√ľbler
Title:
Advances of Zero Flow Simulation of Air Conditioning Systems using Modelica
DOI:
http://dx.doi.org/10.3384/ecp16124139
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