Optimization of individual constructions of a compact small diameter pipe bundle using cfd simulation

Authors

  • V. Trokhaniak National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • V. Gorobets National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • V. Tkachenko National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • A. Balitsky National University of Life and Environmental Sciences of Ukraine image/svg+xml

DOI:

https://doi.org/10.31548/energiya2022.05.034

Abstract

Bundles of smooth cylindrical pipes with a checkerboard and corridor arrangement are widely used in various heat exchange devices and devices of power plants. Surfaces of this type, which are used in known designs of shell and tube heat exchangers, have a large mass and dimensions. The research proposed a new design of the shell-and-tube heat exchanger using compact bundles of small-diameter tubes, which significantly improved its mass-dimensional indicators.

  The location of the pipes in the pipe bundle was optimized using the ANSIS FLUENT software package. CFD model type planning was carried out using the "Latin Hypercube Sampling Design" method using ANSYS DesignXplorer software.

  The pipe offset (pipe diameter 8 mm, offset 1 to 5 mm) and the distance between adjacent rows of pipes (5 to 10 mm) were selected as variable parameters. The thermal-hydraulic efficiency of the beam was chosen as the optimal parameter. The MOGA method was used for optimization.

The optimization results show that the greatest value of thermohydraulic efficiency has a pipe bundle for which the displacement of the tubes is 0.00101986 m, the distance between the tubes is 0.009937333 m. At the same time, the heat transfer coefficient is 100.019304 W/m2K, the pressure drop is 34.5701419 Pa, and thermohydraulic efficiency is equal to 312.101156. For an optimal bundle of pipes, the pressure drop in the channels of the bundle lies in the range from -47 to 130 Pa, and the flow speed in individual sections of the channel reaches 14 m/s.

Key words: CFD modeling, optimization, tube bundle, heat exchange, hydrodynamics

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Gorobets, V., Bohdan, Y., Trokhaniak, V., Antypov, I. (2019). Investigations of heat transfer and hydrodynamics in heat exchangers with compact arrangements of tubes. Applied Thermal Engineering, 151, 46-54. doi.org/10.1016/j.applthermaleng.2019.01.059

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Published

2022-12-23

Issue

No. 5 (2022)

Section

Статті

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