DIRECT CONTACT HEAT TRANSFER BETWEEN   TWO IMMISCIBLE LIQUIDS IN VERTICAL TUBE

张鹏; 王一平; 郭翠梨; 王琨; 张金利

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DIRECT CONTACT HEAT TRANSFER BETWEEN TWO IMMISCIBLE LIQUIDS IN VERTICAL TUBE

更新时间：2025-12-10

- DIRECT CONTACT HEAT TRANSFER BETWEEN TWO IMMISCIBLE LIQUIDS IN VERTICAL TUBE
- CIESC Journal Issue 2, (2001)
- 作者机构：
  
  天津大学化工学院!天津300072,天津大学化工学院!天津300072,天津大学化工学院!天津300072,吉林化工学院精细化工系!吉林吉林132022,天津大学化工学院,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q021
- Online First：25 February 2001，
  
  Published：25 February 2001
- 稿件说明：
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张鹏, 王一平, 郭翠梨, et al. DIRECT CONTACT HEAT TRANSFER BETWEEN TWO IMMISCIBLE LIQUIDS IN VERTICAL TUBE[J]. CIESC Journal, 2001, (2).
DOI：

张鹏, 王一平, 郭翠梨, et al. DIRECT CONTACT HEAT TRANSFER BETWEEN TWO IMMISCIBLE LIQUIDS IN VERTICAL TUBE[J]. CIESC Journal, 2001, (2). DOI：

摘要

研究了垂直管内连续相水和分散相戊烷泡滴之间的流动和传热性能 .在全面考虑了汽体的膨胀、水蒸气的蒸发、界面张力的作用、汽液两相的相互作用和滑移、泡滴的破碎等影响因素的基础上

建立了与实验结果吻合较好的一维流体力学模型和传热模型

Abstract

In this paper

the performance of fluid dynamics and heat transfer between continuous and dispersed phases is studied for pentane-water system in a gas-liquid-liquid three-phase vertical tube. The gas-liquid-liquid three-phase section is divided into two stages. In the first stage the droplets number density is assumed to be unvarying but the diameter increases gradually

while in the second stage the diameter of droplet is kept constant value but the droplet number density is a variable. Under this assumption some models such as one-dimensional two-fluid dynamics model

local volumetric heat transfer coefficient

average volumetric heat transfer coefficient and single droplet heat transfer coefficient are developed. These models take into account the variation of gas density due to expansion in the tube

the evaporation of continuous-phase water

the action of interfacial tension

the velocity slip and interaction between gas and liquid

and two-phase bubbles break-up. The main characteristic parameters of fluid flow are also analyzed in detail. The calculated results showed good agreement with the experimental values.

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