SavedAdd your journal

Journals / European Mechanical Science / 2022 / Cilt: 6 - Sayı: 3

Thermo-hydraulic performance investigation of a heat exchanger tube inserted with twisted tapes modified with various twist ratio and alternate axis

Veysel ÖZCEYHAN
Mahmut UYANIK
Toygun DAĞDEVİR
Pages
189–195
Publication Date
2022-10-12
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Overall results are determined with thermohydraulic performance criteria (THP).

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This paper presents a numerical investigation on a heat transfer enhancement by using a computational fluid dynamics software.
📊
Key Findings & Data:The twisted tapes with twist ratios of 4, 6 and 8 were modified with alternate axis.
💡
Conclusion & Impact:Overall results are determined with thermohydraulic performance criteria (THP).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Heat transfer enhancement · twisted tape · alternate axis

Abstract

This paper presents a numerical investigation on a heat transfer enhancement by using a computational fluid dynamics software. The heat transfer enhancement is implemented by inserting twisted tape into a heat exchanger tube. The twisted tapes with twist ratios of 4, 6 and 8 were modified with alternate axis. The pitch of the twisted tape having the rotation direction such as clockwise and counterclockwise are connected with 90º connection angle. Water is selected as working fluid and turbulent flow condition corresponding to Reynolds number ranging from 5000 to 29000 are considered in the study. The heat exchanger tube is under constant heat flux of 50 kW/m2. Numerical analysis results prove that the use of twisted tape improves thermal performance compared to smooth tube. As the twist ratio increased, the heat transfer performance and the friction loss penalty decreased. Overall results are determined with thermohydraulic performance criteria (THP). The highest THP value is obtained as 1.21 for the tube inserted with the twisted tape which has the twist ratio of 4 and alternate axis between the twist pitches at Reynolds number of 5913

🔖

Cite This Article

ÖZCEYHAN, V., UYANIK, M., DAĞDEVİR, T. (2022). Thermo-hydraulic performance investigation of a heat exchanger tube inserted with twisted tapes modified with various twist ratio and alternate axis. European Mechanical Science, Cilt: 6 - Sayı: 3, 189–195. https://ajindex.com/articles/512371

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (1)

  1. Kumar, B., Srivastava, G.P., Kumar, M., Patil, A.K., (2018). A review of heat transfer and fluid flow mechanism in heat exchanger tube with inserts. Chemical Engineering and Processing - Process Intensification. 123: 126–37. doi: 10.1016/J.CEP.2017.11.007. Maradiya, C., Vadher, J., Agarwal, R., (2018). The heat transfer enhancement techniques and their Thermal Performance Factor. Beni-Suef University Journal of Basic and Applied Sciences. 7(1): 1–21. doi: 10.1016/j.bjbas.2017.10.001. Kareem, Z.S., Mohd Jaafar, M.N., Lazim, T.M., Abdullah, S., Abdulwahid, A.F., (2015). Passive heat transfer enhancement review in corrugation. Experimental Thermal and Fluid Science. 68: 22–38. doi: 10.1016/J.EXPTHERMFLUSCI.2015.04.012. Bucak, H., Yılmaz, F., (2020). The current state on the thermal performance of twisted tapes: A geometrical categorisation approach. Chemical Engineering and Processing - Process Intensification. 153: 107929. doi: 10.1016/j.cep.2020.107929. Rahimi, M., Shabanian, S.R., Alsairafi, A.A., (2009). Experimental and CFD studies on heat transfer and friction factor characteristics of a tube equipped with modified twisted tape inserts. Chemical Engineering and Processing: Process Intensification. 48(3): 762–70. doi: 10.1016/j.cep.2008.09.007. Eiamsa-ard, S., Thianpong, C., Eiamsa-ard, P., (2010). Turbulent heat transfer enhancement by counter/co-swirling flow in a tube fitted with twin twisted tapes. Experimental Thermal and Fluid Science. 34(1): 53–62. doi: 10.1016/j.expthermflusci.2009.09.002. Zhang, X., Liu, Z., Liu, W., (2012). Numerical studies on heat transfer and flow characteristics for laminar flow in a tube with multiple regularly spaced twisted tapes. International Journal of Thermal Sciences. 58: 157–67. doi: 10.1016/J.IJTHERMALSCI.2012.02.025. Ponnada, S., Subrahmanyam, T., Naidu, S.V., (2019). A comparative study on the thermal performance of water in a circular tube with twisted tapes, perforated twisted tapes and perforated twisted tapes with alternate axis. International Journal of Thermal Sciences. 136: 530–8. doi: 10.1016/j.ijthermalsci.2018.11.008. Guo, J., Fan, A., Zhang, X., Liu, W., (2011). A numerical study on heat transfer and friction factor characteristics of laminar flow in a circular tube fitted with center-cleared twisted tape. International Journal of Thermal Sciences. 50(7): 1263–70. doi: 10.1016/j.ijthermalsci.2011.02.010. Bhattacharyya, S., Saha, S.K., (2012). Thermohydraulics of laminar flow through a circular tube ha