TY - JOUR
T1 - Design of a Numerical Simulator for Finned-Tube Heat Exchangers with Arbitrary Circuitry
AU - Garcia, John Carlo S.
AU - Giannetti, Niccolo
AU - Varela, Daryl Anne B.
AU - Varela, Richard Jayson
AU - Yamaguchi, Seiichi
AU - Saito, Kiyoshi
AU - Berana, Menandro S.
N1 - Funding Information:
The authors would like to acknowledge the Department of Science and Technology–Engineering Research and Development for Technology (DOST-ERDT) for the funding provided to Mr. Garcia under the Foreign PhD Scholarship program. This paper is based on results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO).
Publisher Copyright:
© 2021 Taylor & Francis Group, LLC.
PY - 2021
Y1 - 2021
N2 - A numerical simulator that can handle a finned-tube heat exchanger with a complex refrigerant circuitry is presented. The model is based on a tube-by-tube approach in which each tube is considered as the control volume in the analysis of the mass, energy, and momentum conservation. A mathematical representation of the refrigerant circuitry is also developed using the concepts in graph theory. The tube–tube adjacency matrix provides a unique representation of the tube connectivity and can also be utilized for constraints handling. With the implementation of the constraints, nonphysical and infeasible circuitries are removed from the solution space, which is advantageous for an evolutionary search for an optimum solution. The numerical simulator is verified against two sets of experimental data, and the calculated heat duty and pressure drop are within ±6% and ±20%, respectively. Sample simulations of the performance of different refrigerants in three circuitry configurations, and circuitry optimization are conducted to investigate the reliability and effectiveness of the tube-tube adjacency matrix and simulation model in the search for an optimal solution.
AB - A numerical simulator that can handle a finned-tube heat exchanger with a complex refrigerant circuitry is presented. The model is based on a tube-by-tube approach in which each tube is considered as the control volume in the analysis of the mass, energy, and momentum conservation. A mathematical representation of the refrigerant circuitry is also developed using the concepts in graph theory. The tube–tube adjacency matrix provides a unique representation of the tube connectivity and can also be utilized for constraints handling. With the implementation of the constraints, nonphysical and infeasible circuitries are removed from the solution space, which is advantageous for an evolutionary search for an optimum solution. The numerical simulator is verified against two sets of experimental data, and the calculated heat duty and pressure drop are within ±6% and ±20%, respectively. Sample simulations of the performance of different refrigerants in three circuitry configurations, and circuitry optimization are conducted to investigate the reliability and effectiveness of the tube-tube adjacency matrix and simulation model in the search for an optimal solution.
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U2 - 10.1080/01457632.2021.2001741
DO - 10.1080/01457632.2021.2001741
M3 - Article
AN - SCOPUS:85119281682
SN - 0145-7632
JO - Heat Transfer Engineering
JF - Heat Transfer Engineering
ER -