Novel numerical modeling of concentric and lateral capillary tube suction line heat exchangers
Document Type
Article
Publication Date
9-1-2022
Abstract
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.
Keywords
Capillary tube, Adiabatic, Non-adiabatic, Capillary tube-suction line heat exchanger, Numerical model
Divisions
fac_eng,mechanical
Funders
Universiti Malaya (Grant No: RK005-2020),IIRG Grant (Grant No: IIRG014A-2019),Daikin Fellowship (Grant No: PV018-2016)
Publication Title
Iranian Journal of Science and Technology-Transactions of Mechanical Engineering
Volume
46
Issue
3
Publisher
Springer
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES