Computational Fluid Dynamics Analysis Procedure and Genetic Algorithm Application for Evaluating Performance of Double Pipe Heat Exchange

• Autorzy: Kadhim Dina Sami , Assi Samira Ahmed , Aziz Jamela Saadi , Nadeem Zahraa Ahmed

Identyfikatory

DOI

10.12913/22998624/193830

Warianty tytułu

EN

CFD Analysis Procedure and Genetic Algorithm Application for Evaluating Performance of Double Pipe Heat Exchanger

• Języki publikacji: EN

Abstrakty

EN

For the time being, there is a growing endeavor towards supporting energy-saving technologies, most significantly heat exchanger systems, by improving the performance of the heat transfer process. The study model employed is a double-pipe heat exchanger (DPHEX), which is served in an actual project at the Low-Density Polyethylene (LDPE) unit of the State Company for Petrochemical Industries in Basra, Iraq. The prominent goals of this study are to gain a deeper comprehension of the exchanger's performance under advanced operating conditions and to maximize the efficiency of heat transfer between the two fluids in the DPHEX system. The current work applies a distinctive connection of SOLIDWORKS with ANSYS FLUENT software to conduct a simulation design and Computational Fluid Dynamics (CFD) analysis of a heat transfer system in DPHEX. Thermal analysis of exchangers is challenging since many parameters, such as the geometry of the heat exchangers and the varying flow regimes influence the overall heat transfer coefficient. As a result, a Genetic Algorithm (GA) was employed to investigate the optimal design and operating conditions of DPHEX, using a COM server to provide flexible communication between the MATLAB GA toolbox and Aspen HYSYS® software. The preliminary findings from ANSYS FLUENT simulations and GA optimizations demonstrated significant improvements. Specifically, the heat transfer rate rose by 24% and 28%, respectively, also there made up an elevate in the overall heat transfer coefficient to 675 W/m²·K and 751 W/m²·K, correspondingly, from 440 W/m²·K in the as-built heat exchanger. Notably, these results were observed while the outgoing temperature of the chilled ethylene gas was at 49℃, and the efficiency accounted for 87.7%. The study exhibited the feasibility of reducing the cooling water quantity from the traditional mass flow rate of 73,860 kg/hr to 50,400 kg/hr while maintaining a reasonable efficiency of 83% at the LDPE unit. These results were achieved with the leaving temperature of ethylene gas and cooling water set at 50℃ and 34℃, respectively. Hence, minimizing water consumption in heat exchangers brings about environmental, economic, and operational advantages. Generally, the study results have reinforced the importance of simulation tools and their direct contribution to achieving efficient and eco-friendly energy systems.

Słowa kluczowe

EN

CFD; heat transfer coefficient; Genetic Algorithm; ANSYS FLUENT; DPHEX

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2024
• Tom: Vol. 18, no. 8
• Strony: 30--45
• Opis fizyczny: Bibliogr. 25 poz., fig., tab.

Twórcy

autor

Kadhim Dina Sami

• Basra Engineering Technical College, Southern Technical University, Basra, Iraq

• https://orcid.org/0000-0002-6917-5453

autor

Assi Samira Ahmed

• Basra Engineering Technical College, Southern Technical University, Basra, Iraq

autor

Aziz Jamela Saadi

• Basra Engineering Technical College, Southern Technical University, Basra, Iraq

• https://orcid.org/0000-0001-8156-9183

autor

Nadeem Zahraa Ahmed

• Shatt Al-Arab University College, Basra, Iraq

• https://orcid.org/0009-0008-3571-3066

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).