The effect of baffles types on pressure drop and the overall heat transfer coefficient inside a shell and tube heat exchanger

Authors

  • ณัฐดนย์ พรรณุเจริญวงษ์ Department of Mechanical Engineering, Faculty of Engineering, Thammasat University
  • ณัฏฐา กัลยาประสิทธิ์ Faculty of engineering, Thammasat
  • พลเทพ เวงสูงเนิน Department of Agricultural Machinery Engineering, Rajamangala University of Technology Isan
  • ผดุงศักดิ์ รัตนเดโช Department of Agricultural Machinery Engineering, Rajamangala University of Technology Isan

Keywords:

Baffle types, Heat exchanger, Pressure drop, Overall heat transfer coefficient

Abstract

This research study the effect of the baffles type on pressure drop and the overall heat transfer coefficient in the shell and tube heat exchanger that replace on vapor recovery unit located at PTT public company limited Prakanhong branch. The 3 types of baffles were employed including segmental baffles (SB), double segmental baffles (DSB) and helical baffles (HB). The solving in this research was carried out by CFD to improve heat transfer efficiency in this heat exchanger. A pressure drop found to be 222.36, 170.32 and 100.57 Pa and the overall heat transfer coefficient were 13.07, 8.93 and 14.57 W/m2K respectively. It can be concluded that the shell-and-tube heat exchanger using HB gave the lowest pressure drop and highest overall heat transfer coefficient in this research. And the effectiveness between VRU system and heat exchanger with HB system is improved 72.77%

References

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Published

2019-12-11

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Research Articles