• Title/Summary/Keyword: Bell-Delaware Method

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Effect of baffle parameters on heat transfer in shell-and-tube heat exchangers (원통다관형 열교환기에서 배플인자가 열전달에 미치는 영향)

  • Lee, Sang-Cheon;Jo, Yeong-U;Nam, Sang-Cheol
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.21 no.1
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    • pp.185-194
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    • 1997
  • An experimental study has been performed on the effect of baffle parameters on shell -side heat transfer in a conventional shell-and-tube heat exchanger. The baffle spacing distance and the number of baffle were varied to investigate the behavior of unequal baffle spacing correction factor which is appeared in the Bell Delaware method for prediction of the shell-side heat transfer coefficient. It was obvious that heat duties obtained from the experiment significantly deviated from those calculated by the conventional Bell-Delaware method. A new correlation of the unequal baffle spacing correction factor was developed. It was shown that the new correlation improves the accuracy of the Bell-Delaware method considerably. This result may induce the use of the Bell-Delaware method in developing a computer software for design of shell-and-tube heat exchangers.

The Performance in Shell-and-Tube Heat Exchangers with Configuration and Surface Characteristics of Tube (Tube의 형상 및 표면특성에 의한 Shell-and-Tube 열교환기의 열전달 성능)

  • Kim, Sung-Il;Park, Ki-Ho;Chun, Won-Pyo
    • Proceedings of the KSME Conference
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    • 2008.11b
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    • pp.2316-2321
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    • 2008
  • This paper presents an improved performance of heat transfer for shell-and-tube and thermal analysis based on the Bell-Delaware method for single tube. Heat transfer has been compared for a smooth tube, helical tube and surface-coated tube. In general, the results showed that properly designed helical tube and surface-coated tube offer a significant improvement in heat transfer. The numerical results derived from the Bell-Delaware method for the shell-side heat transfer coefficient were verified with experimental results. The thermal analysis aids significantly in the solution of the design problem.

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Development of a Single Phase Shell-and-Tube Type Heat Exchanger Thermal Design Code Based on Stream Analysis (유동해석에의한 단상용 원통다관형 열교환기 열설계 코드의 개발)

  • 반태곤;이상천;남상철;박병덕
    • Journal of Energy Engineering
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    • v.10 no.4
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    • pp.299-309
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    • 2001
  • This shell-and-tube heat exchanger design code based on stream analysis method was developed to design accurate and advanced heat exchangers. Several geometry factors which affect the heat exchanger design was explained. Stream analysis method to calculate flow fraction of each stream and heat exchanger design flow chart was introduced. Performance of developed simulation code was compared with Delaware09, Delaware10, DongHwa and ANL experimental data. The statistical results of performance evaluation indicated that most data points are predicted within $\pm$30%. But the pressure loss was over predicted.

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