Ghiasi, Pedram and Salehi, Amar and Hoseini, S. S. and Najafi, G. and R., Mamat and Balkhaya, . and Fitri, Khoerunnisa (2020) Investigation of the effect of flow rate on fluid heat transfer in counter-flow helical heat exchanger using CFD method. CFD Letters, 12 (3). pp. 98-111. ISSN 2180-1363. (Published)
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Abstract
Heat exchangers are generally used in the process of heat transfer between two different fluids separated from each other by a solid wall in order to save time and reduce expenses. Fluids behavior change by adding a wire-insert in its path. To investigate heat transfer parameters, we need to simulate the whole system. In this study, heat transfer of counter-flow helical double pipe heat exchanger was modelled by using Computational Fluid Dynamics (CFD) in "Ansys CFX". The cold and hot fluids temperature were in the ranges of 10-20C° and 30-50C° respectively. The Reynolds number of flows were in the range of 4×103 to 42×103 and the process was singlephase. The model was eventually evaluated by experimental data after simulation. The results indicated that the model was able to interpret the experimental results with correlation coefficients of 0.98 and 0.97 for hot and cold streams respectively. Furthermore, the wire-insert installed to the cold flow path caused more fluid turbulence and increased the temperature difference of the cold fluid inlet and outlet proportional to the hot fluid.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Simulation; Heat exchanger with wireinsert; Turbulent flow; Single-phase flow; Helical heat transfer |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
| Faculty/Division: | College of Engineering |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 10 Nov 2022 03:22 |
| Last Modified: | 10 Nov 2022 03:22 |
| URI: | http://umpir.ump.edu.my/id/eprint/30143 |
| Download Statistic: | View Download Statistics |
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