Simulation on Heat Transfer Enhancement Characteristics of Inserted Spiral Spring Fins
DOI: 10.23977/poweet.2020.020101 | Downloads: 31 | Views: 3178
Yuxiang Ma 1, Yongqi Liu 1, Peng Sun 1, Min Lu 1, Yuqiu Zhang 1
1 School of Transportation and Vehicle Engineering, Shandong University of Technology, 255049, China
Corresponding AuthorYongqi Liu
In order to enhance the heat exchange effect of spring heat exchange tube, based on the traditional spiral spring heat exchange tube, a new type of spiral spring heat exchange tube was developed by changing the spring section into a square and contacting the spring with the inner wall of the heat exchange tube. The spiral spring heat exchange tube was simulated by Fluent software, and compared with the circular section spring heat exchange tube, the influence of equivalent diameter, pitch and section shape on the heat exchange effect was analyzed. The results show that: the heat transfer effect of square section spring heat exchange tube is improved than that of circular section spring heat exchange tube; when the Reynolds number of inlet is 20000~40000 and the pitch is 33.5mm, the heat transfer coefficient and tube pressure drop of spiral spring heat exchange tube increase with the increase of spring equivalent diameter, compared with the smooth tube, the heat transfer coefficient increase by 109%~164%, while the pressure drop increase by 5~18 times; when the equivalent diameter is 6mm, the heat transfer coefficient and tube pressure drop increase with the decrease of spring pitch, compared with the smooth tube, the heat transfer coefficient increase by 109%~158%, while the pressure drop increase by 8~16 times.
KEYWORDSspring pitch, equivalent diameter, spring heat exchange tube, enhanced heat transfer, numerical analysis
CITE THIS PAPER
Yuxiang Ma, Yongqi Liu, Peng Sun, Min Lu and Yuqiu Zhang. Simulation on Heat Transfer Enhancement Characteristics of Inserted Spiral Spring Fins. International Journal of Power Engineering and Engineering Thermophysics (2020) 2: 1-12. DOI: http://dx.doi.org/10.23977/poweet.2020.020101.
 Wenqin L, Guorong Y,Li G. Research progress on heat transfer enhancement of spiral spring inserts in tubes [J]. Modern Chemical Research, 2017, (4): 98-99.
 García J P, Solano P G, Vicente A, et al. The influence of artificial roughness shape on heat transfer enhancement: corrugated tubes, dimpled tubes and wire coils [J]. Applied Thermal Engineering, 2012, 35: 196-201.
 Webb R L, Principles of enhanced heat transfer [M]. New York: Wiley, 1994: 3–11.
 Chandrasekar M,Suresh S,Chandra A. Experimental studies on heat transfer and friction factor characteristics of Al2O3/water nanofluid in a circular pipe under laminar flow with wire coil inserts [J]. Experimental Thermal and Fluid Science, 2010, 34 (2): 122-130.
 Eiamsa-ard S, Koolnapadol N, Promvonge P. Heat transfer behavior in a square duct with tandem wire coil element insert [J]. Chinese Journal of Chemical Engineering, 2012, 20 (5): 863-869.
 Lifang L, Junwen C, Jianmin X. Study on heat transfer enhancement characteristics of inner spiral spring core flow [J]. Petro-Chemical Equipment, 2018, 47 (1): 8-13.
 Lifang L, Junwen C, Jianmin X. Experimental study on heat transfer enhancement of core flow with inserted coil springs [J]. Chemical Equipment Technology, 2018, 39 (3): 26-29.
 Jianmin X, Ying Z, Xiaoxia H, et al. Study on heat transfer performance of the built-in spiral spring heat exchange tube [J]. Chemical Equipment Technology, 2017, 38 (3): 18-21.
 Akhavan-Behabadi M A,Mohseni S G,Najafifi H,et al. Heat transfer and pressure drop characteristics of forced convective evaporation in horizontal tubes with coiled wire inserts [J]. International Communications in Heat and Mass Transfer, 2009, 36 (10): 1089–1095.
 ShyyWoei C,KuoChing Y. Heat transfer enhancement by spirally coiled spring inserts with and without segmental solid cords [J]. Experimental Thermal and Fluid Science, 2018, 97: 119-133.