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<p>The steady-state processes of heat and mass transfer in random and regular packing layers with film countercurrent of liquid with gas flow in the column are considered. The expressions obtained earlier by us for the Sherwood and Nusselt numbers on the basis of turbulent boundary layer models for random packings without irrigation are presented. Based on the application of the dissipative model, an expression is obtained for the dimensionless friction parameter on the gas-liquid surface, which takes into account the presence of the liquid phase in the form of a flowing film. Examples of calculating the Sherwood and Nusselt numbers are given for both dry and irrigated random packings and regular packings with intensifiers. Agreement with experimental data and with calculations using empirical expressions is shown.</p>

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Determination of Heat and Mass Transfer Coefficients in the Gas Phase in a Random and Regular Packing Layer in Counter-Current Mode

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • A. G. Laptev,
  • E. A. Lapteva,
  • A. V. Rakov

摘要

The steady-state processes of heat and mass transfer in random and regular packing layers with film countercurrent of liquid with gas flow in the column are considered. The expressions obtained earlier by us for the Sherwood and Nusselt numbers on the basis of turbulent boundary layer models for random packings without irrigation are presented. Based on the application of the dissipative model, an expression is obtained for the dimensionless friction parameter on the gas-liquid surface, which takes into account the presence of the liquid phase in the form of a flowing film. Examples of calculating the Sherwood and Nusselt numbers are given for both dry and irrigated random packings and regular packings with intensifiers. Agreement with experimental data and with calculations using empirical expressions is shown.