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Flow mechanism and heat transfer enhancement in longitudinal-flow tube bundle of shell-and-tube heat exchanger

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Abstract

The flow disturbance and heat transfer mechanism in the tube bundle of rod baffle shell-and-tube heat exchanger were analyzed, on the basis of which and combined with the concept of heat transfer enhancement in the core flow, a new type of shell-and-tube heat exchanger with combination of rod and van type spoiler was designed. Corresponding mathematical and physical models on the shell side about the new type heat exchanger were established, and fluid flow and heat transfer characteristics were numerically analyzed. The simulation results showed that heat transfer coefficient of the new type of heat exchanger approximated to that of rod baffle heat exchanger, but flow pressure drop was much less than the latter, indicating that comprehensive performance of the former is superior to that of the latter. Compared with rod baffle heat exchanger, heat transfer coefficient of the heat exchanger under investigation is higher under same pressure drop, especially under the high Reynolds numbers.

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Authors and Affiliations

  1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China

    Wei Liu, ZhiChun Liu, YingShuang Wang & SuYi Huang

Authors
  1. Wei Liu
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  2. ZhiChun Liu
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  3. YingShuang Wang
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  4. SuYi Huang
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Corresponding author

Correspondence to Wei Liu.

Additional information

Supported by the National Basic Research Program of China (“973” Project) (Grant No. 2007CB206903) and the National Natural Science Foundation of China (Grant No. 50721005)

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Liu, W., Liu, Z., Wang, Y. et al. Flow mechanism and heat transfer enhancement in longitudinal-flow tube bundle of shell-and-tube heat exchanger. Sci. China Ser. E-Technol. Sci. 52, 2952–2959 (2009). https://doi.org/10.1007/s11431-009-0237-7

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  • DOI: https://doi.org/10.1007/s11431-009-0237-7

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