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Theorical Analysis of New Propeller Type Turbulator Design in Parallel Flow Double Tube Heat Exchanger

Year 2022, Volume: 12 Issue: 1, 204 - 228, 15.06.2022
https://doi.org/10.31466/kfbd.1014483

Abstract

In this study, the usage purposes of turbulators are mentioned. The advantages and disadvantages of two different turbulator models are examined. In addition, the working principle of the turbulator was examined to create the analysis conditions. Parts used in turbulators and their alternatives are introduced. The necessary engineering calculations for the analysis were made, the flow analysis to be applied to the turbulator was made and the results were interpreted. Flow simulation, one of the simulation plug-ins containing the SolidWorks commercial program, was used in the analysis. Also turbulator analysis; it was made to determine fluid pressure, fluid velocity, fluid temperature, turbulent energy, turbulent viscosity. The heat exchanger is approximately 1000 mm long. For the turbulators, copper material was chosen as its thermal conductivity is better than aluminum. In the study conducted with two types of turbulators; numerical simulation results were calculated as 4,771 Mpa, 20,15 0C, 211,168 J/kg, 14,81 Pa.s for the spring turbulator, while these values were calculated as 7,811 Mpa, 20,32 0C, 165,518 J/kg, 18,62 Pa.s for the propeller turbulator. In addition, it has been observed that the fluid velocities are 61.5 m/s for the spring turbulator and about 75 m/s for the propeller turbulator. Due to the continuous increase in turbulent energy and turbulent viscosity over time, it has been recommended to use a finned turbulator instead of a spring tube. When all these results are examined, it will open new ideas and fields of study to further improve the overall thermal-aerodynamic performance of turbulators. In this study, a design that will be an alternative to turbulator designs has been realized.

References

  • Chen and et al., 2020, Thermal-fluidic correlations for turbulent flow in a serpentine heat exchanger with novel wing-shaped turbulators, International Journal of Heat and Mass Transfer, 160, 120220.
  • Ganji et al., 2016, Effect of discontinuous helical turbulators on heat transfer characteristics of double pipe water to air heat exchanger, Energy Conversion and Management, 118, 75-87.
  • Guo, C., Wang, T., Hua, X., Tang, D., Experimental and theoretical investigation on two-phase flow characteristics and pressure drop during flow condensation in heat transport pipeline. Applied Thermal Engineering, 66, p 365-37
  • Karakaya H. and Durmuş A., 2013, Heat Transfer and Exergy Loss in Conical Spring Turbulators, International Journal of Heat and Mass Transfer,60, 756762.
  • Promvonge P. And Eiamsa-ard S., 2006, Experimental Investigation of Heat Transfer and Friction Characteristics in a Circular Tube Fitted with V-Nozzle Turbulators, International Journal Heat and Mass Transfer, 33, 591-600.
  • Yadav, S. and Sahu, S. 2020, Effect of helical surface disc turbulator on thermal and friction characteristics of double pipe water to air heat exchanger, Experimental Heat Transfer, 34, 51-67.
  • Xin-Cheng Tu ., Yuting Wua, Hyoung-Bum Kim.,Improvement of two-phase flow distribution in the header of a plate-fin heat exchanger.,International Journal of Heat and Mass Transfer 123 (2018),p 523–533.
  • Xiong et al., 2021, 3D Numerical Study of Conical and Fusiform Turbulators for Heat Transfer Improvement in a Double-Pipe Heat Exchanger, International Journal of Heat and Mass Transfer, 170, 120995.
  • Cengel and Cimbala 2008, Fluid Mechanics Fundementals and Aplications, page 406.
  • Steel, H.S. et al., 2019, The Effect of The Addition of Ellipse Discharged Winged Turbulator to the Pipe Interior Surfaces of a Water heater Heater, 14. National Plumbing Engineering Congress, Izmir, 1149-1167.
  • Proceedings from CSCL '95: The First International Conference on Computer Support for Collaborative
  • Baysal, E., 2009, Experimental and Numerical Investigation of the Effects of Helical Turbulators in Concentric Tube Heat Exchangers, PhD Thesis, Gazi University Institute of Science and Technology, Ankara
  • Göcücü, 2020, Experimental Investigation of the Effect of Ring Turbulators on Heat Transfer in Two-Phase Flows. Master's thesis, Ataturk University. Faculty of Engineering, Erzurum.
  • Yesilyurt, 2015, Experimental Investigation of the Effects of Conical Springs on In-Pipe Heat Transfer and Flow Instability in Two-Phase Flows. Master's thesis, Ataturk University Faculty of Engineering, Erzurum.

Paralel Akışlı Çift Borulu Isı Eşanjöründe Yeni Pervaneli Türbülatör Tasarımının Teorik Analizi

Year 2022, Volume: 12 Issue: 1, 204 - 228, 15.06.2022
https://doi.org/10.31466/kfbd.1014483

Abstract

Bu çalışmada türbülatörlerin kullanım amaçlarından bahsedilmiştir. İki farklı türbülatör modelinin avantaj ve dezavantajları incelenmiştir. Ayrıca analiz koşullarını oluşturmak için türbülatörün çalışma prensibi incelenmiştir. Türbülatörlerde kullanılan parçalar ve alternatifleri tanıtılmıştır. Analiz için gerekli mühendislik hesapları yapılmış, türbülatöre uygulanacak akış analizi yapılmış ve sonuçlar yorumlanmıştır. Analizde SolidWorks ticari programını içeren simülasyon eklentilerinden biri olan akış simülasyonu kullanılmıştır. Ayrıca türbülatör analizi; akışkan basıncını, akışkan hızını, akışkan sıcaklığını, türbülans enerjisini, türbülans viskozitesini belirlemek için yapılmıştır. Isı eşanjörü yaklaşık 1000 mm uzunluğundadır. Türbülatörler için, termal iletkenliği alüminyumdan daha iyi olduğu için bakır malzeme seçilmiştir. İki tip türbülatör ile yapılan çalışmada; sayısal simülasyon sonuçları yaylı türbülatör için 4,771 Mpa, 20,15 0C, 211,168 J/kg, 14,81 Pa.s iken, pervaneli türbülatör için bu değerler 7,811 Mpa, 20,32 0C, 165,518 J/kg, 18,62 Pa.s olarak hesaplanmıştır. Ayrıca akışkan hızlarının yaylı türbülatör için 61,5 m/s, pervaneli türbülatör için yaklaşık 75 m/s olduğu gözlemlenmiştir. Zaman içinde türbülans enerjisi ve türbülans viskozitesindeki sürekli artış nedeniyle, yaylı boru yerine kanatlı türbülatör kullanılması tavsiye edilmiştir. Tüm bu sonuçlar incelendiğinde, türbülatörlerin genel termal-aerodinamik performansını daha da iyileştirmek için yeni fikirler ve çalışma alanları açacaktır. Bu çalışmada türbülatör tasarımlarına alternatif olacak bir tasarım gerçekleştirilmiştir.

References

  • Chen and et al., 2020, Thermal-fluidic correlations for turbulent flow in a serpentine heat exchanger with novel wing-shaped turbulators, International Journal of Heat and Mass Transfer, 160, 120220.
  • Ganji et al., 2016, Effect of discontinuous helical turbulators on heat transfer characteristics of double pipe water to air heat exchanger, Energy Conversion and Management, 118, 75-87.
  • Guo, C., Wang, T., Hua, X., Tang, D., Experimental and theoretical investigation on two-phase flow characteristics and pressure drop during flow condensation in heat transport pipeline. Applied Thermal Engineering, 66, p 365-37
  • Karakaya H. and Durmuş A., 2013, Heat Transfer and Exergy Loss in Conical Spring Turbulators, International Journal of Heat and Mass Transfer,60, 756762.
  • Promvonge P. And Eiamsa-ard S., 2006, Experimental Investigation of Heat Transfer and Friction Characteristics in a Circular Tube Fitted with V-Nozzle Turbulators, International Journal Heat and Mass Transfer, 33, 591-600.
  • Yadav, S. and Sahu, S. 2020, Effect of helical surface disc turbulator on thermal and friction characteristics of double pipe water to air heat exchanger, Experimental Heat Transfer, 34, 51-67.
  • Xin-Cheng Tu ., Yuting Wua, Hyoung-Bum Kim.,Improvement of two-phase flow distribution in the header of a plate-fin heat exchanger.,International Journal of Heat and Mass Transfer 123 (2018),p 523–533.
  • Xiong et al., 2021, 3D Numerical Study of Conical and Fusiform Turbulators for Heat Transfer Improvement in a Double-Pipe Heat Exchanger, International Journal of Heat and Mass Transfer, 170, 120995.
  • Cengel and Cimbala 2008, Fluid Mechanics Fundementals and Aplications, page 406.
  • Steel, H.S. et al., 2019, The Effect of The Addition of Ellipse Discharged Winged Turbulator to the Pipe Interior Surfaces of a Water heater Heater, 14. National Plumbing Engineering Congress, Izmir, 1149-1167.
  • Proceedings from CSCL '95: The First International Conference on Computer Support for Collaborative
  • Baysal, E., 2009, Experimental and Numerical Investigation of the Effects of Helical Turbulators in Concentric Tube Heat Exchangers, PhD Thesis, Gazi University Institute of Science and Technology, Ankara
  • Göcücü, 2020, Experimental Investigation of the Effect of Ring Turbulators on Heat Transfer in Two-Phase Flows. Master's thesis, Ataturk University. Faculty of Engineering, Erzurum.
  • Yesilyurt, 2015, Experimental Investigation of the Effects of Conical Springs on In-Pipe Heat Transfer and Flow Instability in Two-Phase Flows. Master's thesis, Ataturk University Faculty of Engineering, Erzurum.
There are 14 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Articles
Authors

Nesrin Adıgüzel 0000-0001-7610-2757

Adem Gündüz 0000-0002-3319-0029

Early Pub Date June 15, 2022
Publication Date June 15, 2022
Published in Issue Year 2022 Volume: 12 Issue: 1

Cite

APA Adıgüzel, N., & Gündüz, A. (2022). Theorical Analysis of New Propeller Type Turbulator Design in Parallel Flow Double Tube Heat Exchanger. Karadeniz Fen Bilimleri Dergisi, 12(1), 204-228. https://doi.org/10.31466/kfbd.1014483