Novel numerical modeling of concentric and lateral capillary tube suction line heat exchangers

Yau, Yat Huang and Poh, H. H. (2022) Novel numerical modeling of concentric and lateral capillary tube suction line heat exchangers. Iranian Journal of Science and Technology-Transactions of Mechanical Engineering, 46 (3). pp. 693-704. ISSN 2228-6187, DOI

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A homogenous model for simulating flow characteristics in a capillary tube-suction line heat exchanger (CT-SL HX) is developed based on conservation of mass, momentum, and energy. The numerical model is completely validated by 102 experimental data for both concentric and lateral types of CT-SL HX. The agreements of +/- 10% and +/- 15% on the prediction of the mass flow rate for the just mentioned CT-SL HX, respectively, and +/- 35% on the heat transfer rate are reported. The model investigates the impacts of the convergence criteria setting, and the findings suggest that the outlet pressure of +/- 0.01 MPa on the capillary tube and the temperature of +/- 0.5 degrees C for the suction pipe inlet as the proven convergence criteria. The model is ready to be used for parametric studies with the noted error band just mentioned and can be applied as an important reference for heat exchanger design engineers to optimize the performance of the CT-SL HX in the refrigeration industry.

Item Type: Article
Funders: Universiti Malaya (Grant No: RK005-2020), IIRG Grant (Grant No: IIRG014A-2019), Daikin Fellowship (Grant No: PV018-2016)
Uncontrolled Keywords: Capillary tube; Adiabatic; Non-adiabatic; Capillary tube-suction line heat exchanger; Numerical model
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Oct 2023 05:10
Last Modified: 26 Oct 2023 05:10

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