Article | Proceedings of the 13th International Modelica Conference, Regensburg, Germany, March 4–6, 2019 | Tube-fin Heat Exchanger Circuitry Optimization For Improved Performance Under Frosting Conditions Linköping University Electronic Press Conference Proceedings
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Title:
Tube-fin Heat Exchanger Circuitry Optimization For Improved Performance Under Frosting Conditions
Author:
Zhenning Li: Center for Environmental Energy Engineering, University of Maryland College Park, MD 20742 USA Hongtao Qiao: Mitsubishi Electric Research Labs, 201 Broadway Cambridge, MA 02139 USA Vikrant Aute: Center for Environmental Energy Engineering, University of Maryland College Park, MD 20742 USA
DOI:
10.3384/ecp19157259
Download:
Full text (pdf)
Year:
2019
Conference:
Proceedings of the 13th International Modelica Conference, Regensburg, Germany, March 4–6, 2019
Issue:
157
Article no.:
027
Pages:
6
No. of pages:
259-264
Publication type:
Abstract and Fulltext
Published:
2019-02-01
ISBN:
978-91-7685-122-7
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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Frost accumulation on tube-fin heat exchanger leads to reduction in evaporator capacity and deteriorates cycle efficiency. The conventional counter-flow heat exchanger circuitry has the disadvantage that more frost tends to accumulate in the first few banks exposed to the incoming air. This frost concentration makes the air side flow resistance increase rapidly, thus reduces the air flow rate and evaporator capacity under constant fan power. In this paper, a novel integer permutation based Genetic Algorithm is used to obtain optimal circuitry design with improved HX performance under frosting conditions. A dynamic HX model with the capability to account for non-uniform frost growth on a fan-supplied coil is used to assess the performance of optimal circuitry. The case study shows that the proposed circuitry design approach yields better circuitry with larger HX capacity, more uniform frost distribution, less air flow path blockage, and therefore longer evaporator operation time between defrost operations.

Keywords: Heat Exchanger, Frost Growth, Circuitry Optimization, Genetic Algorithm

Proceedings of the 13th International Modelica Conference, Regensburg, Germany, March 4–6, 2019

Author:
Zhenning Li, Hongtao Qiao, Vikrant Aute
Title:
Tube-fin Heat Exchanger Circuitry Optimization For Improved Performance Under Frosting Conditions
DOI:
http://dx.doi.org/10.3384/ecp19157259
References:
No references available

Proceedings of the 13th International Modelica Conference, Regensburg, Germany, March 4–6, 2019

Author:
Zhenning Li, Hongtao Qiao, Vikrant Aute
Title:
Tube-fin Heat Exchanger Circuitry Optimization For Improved Performance Under Frosting Conditions
DOI:
https://doi.org10.3384/ecp19157259
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Last updated: 2019-06-04