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

Year 2022, Volume: 6 Issue: 3, 189 - 195, 20.09.2022

Mahmut Uyanık Toygun Dağdevir , Veysel Ozceyhan

https://doi.org/10.26701/ems.1032081

Cited By: 2

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

Keywords

Heat transfer enhancement, twisted tape, alternate axis, friction factor, performance evaluation criteria.

Supporting Institution

Erciyes University

Project Number

FYL-2020-10681

Thanks

The authors acknowledge the financial, laboratory, and infrastructure support provided by the Scientific Research Projects Coordination Unit, Erciyes University, Turkey (FDK-2020-10681).

References

• 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 having integral helical rib roughness and fitted with centre-cleared twisted-tape. Experimental Thermal and Fluid Science. 42: 154–62. doi: 10.1016/J.EXPTHERMFLUSCI.2012.05.002.
• Dagdevir, T., Ozceyhan, V., (2021). An experimental study on heat transfer enhancement and flow characteristics of a tube with plain, perforated and dimpled twisted tape inserts. International Journal of Thermal Sciences. 159: 106564. doi: 10.1016/j.ijthermalsci.2020.106564.
• Kola, P.V.K.V., Pisipaty, S.K., Mendu, S.S., Ghosh, R., (2021). Optimization of performance parameters of a double pipe heat exchanger with cut twisted tapes using CFD and RSM. Chemical Engineering and Processing - Process Intensification. 163: 108362. doi: 10.1016/J.CEP.2021.108362.
• Promvonge, P., Suwannapan, S., Pimsarn, M., Thianpong, C., (2014). Experimental study on heat transfer in square duct with combined twisted-tape and winglet vortex generators. International Communications in Heat and Mass Transfer. 59: 158–65. doi: 10.1016/j.icheatmasstransfer.2014.10.005.
• Hayat, M.Z., Nandan, G., Tiwari, A.K., Sharma, S.K., Shrivastava, R., Singh, A.K., (2020). Numerical study on heat transfer enhancement using twisted tape with trapezoidal ribs in an internal flow. Materials Today: Proceedings. doi: 10.1016/j.matpr.2020.09.061.
• Dagdevir, T., Uyanik, M., Ozceyhan, V., (2021). The experimental thermal and hydraulic performance analyses for the location of perforations and dimples on the twisted tapes in twisted tape inserted tube. International Journal of Thermal Sciences. 167: 107033. doi: 10.1016/j.ijthermalsci.2021.107033.
• Abolarin, S.M., Everts, M., Meyer, J.P., (2019). Heat transfer and pressure drop characteristics of alternating clockwise and counter clockwise twisted tape inserts in the transitional flow regime. International Journal of Heat and Mass Transfer. 133: 203–17. doi: 10.1016/J.IJHEATMASSTRANSFER.2018.12.107.
• Eiamsa-ard, S., Somkleang, P., Nuntadusit, C., Thianpong, C., (2013). Heat transfer enhancement in tube by inserting uniform/non-uniform twisted-tapes with alternate axes: Effect of rotated-axis length. Applied Thermal Engineering. 54(1): 289–309. doi: 10.1016/J.APPLTHERMALENG.2013.01.041.
• Eiamsa-ard, S., Promvonge, P., (2010). Performance assessment in a heat exchanger tube with alternate clockwise and counter-clockwise twisted-tape inserts. International Journal of Heat and Mass Transfer. 53(7–8): 1364–72. doi: 10.1016/j.ijheatmasstransfer.2009.12.023.
• Sharma, P., Kumar Patel, V., (2020). Computational investigation of the thermo-fluidic effects of inserting twisted tape with alternating twists with notches. Materials Today: Proceedings. 28: 1968–72. doi: 10.1016/j.matpr.2020.05.565.
• Wongcharee, K., Eiamsa-ard, S., (2011). Friction and heat transfer characteristics of laminar swirl flow through the round tubes inserted with alternate clockwise and counter-clockwise twisted-tapes. International Communications in Heat and Mass Transfer. 38(3): 348–52. doi: 10.1016/J.ICHEATMASSTRANSFER.2010.12.007.
• Seemawute, P., Eiamsa-ard, S., (2010). Thermohydraulics of turbulent flow through a round tube by a peripherally-cut twisted tape with an alternate axis. International Communications in Heat and Mass Transfer. 37(6): 652–9. doi: 10.1016/j.icheatmasstransfer.2010.03.005.
• Wongcharee, K., Eiamsa-ard, S., (2011). Heat transfer enhancement by twisted tapes with alternate-axes and triangular, rectangular and trapezoidal wings. Chemical Engineering and Processing: Process Intensification. 50(2): 211–9. doi: 10.1016/j.cep.2010.11.012.
• Eiamsa-ard, S., Wongcharee, K., Eiamsa-ard, P., Thianpong, C., (2010). Thermohydraulic investigation of turbulent flow through a round tube equipped with twisted tapes consisting of centre wings and alternate-axes. Experimental Thermal and Fluid Science. 34(8): 1151–61. doi: 10.1016/j.expthermflusci.2010.04.004.
• Dittus, F.W., Boelter, L.M.K., (1930). Heat Transfer in Automobile Radiators of the Tubular Type. University of California Publications on Engineering. 2.
• Blasius, H., (1913). Das Aehnlichkeitsgesetz bei Reibungsvorgängen in Flüssigkeiten. Mitt. Forschungsarbeiten Gebiete Ingenieurwesens. 131.