Author(s)

Yuxiang Ma ¹, Yongqi Liu ¹, Peng Sun ¹, Min Lu ¹, Yuqiu Zhang ¹

Affiliation(s)

¹ School of Transportation and Vehicle Engineering, Shandong University of Technology, 255049, China

Corresponding Author

Yongqi Liu

ABSTRACT

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.

KEYWORDS

spring 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.

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