EFFECT OF ADDITIVES ON FLOW BOILING HEAT TRANSFER

思勤; 夏清; 邱运仁

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EFFECT OF ADDITIVES ON FLOW BOILING HEAT TRANSFER

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- EFFECT OF ADDITIVES ON FLOW BOILING HEAT TRANSFER
- CIESC Journal Issue 1, (1995)
- 作者机构：
  
  天津大学化学工程系!天津300072,天津大学化学工程系!天津300072,中南工业大学化工系
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q021
- Online First：25 February 1995，
  
  Published：25 February 1995
- 稿件说明：
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思勤, 夏清, 邱运仁. EFFECT OF ADDITIVES ON FLOW BOILING HEAT TRANSFER[J]. CIESC Journal, 1995, (1).
DOI：

思勤, 夏清, 邱运仁. EFFECT OF ADDITIVES ON FLOW BOILING HEAT TRANSFER[J]. CIESC Journal, 1995, (1). DOI：

摘要

研究了添加剂对垂直管内流动沸腾传热的影响

选用W/O型聚丙烯酰胺(简称PAM)和十八烷胺(简称ODA)为添加剂

研究添加剂水溶液的性质、添加剂浓度、流速、热通量、聚合物分子量等因素对流动沸腾传热的影响.采用X光射线光电子能谱仪测试了添加剂分子在管壁上的吸附情况

并对壁面特性进行了分析.研究结果表明

W/O型聚丙烯酰胺和十八烷胺都具有强化流动沸腾传热的性能

而且有最佳浓度范围。PAM还具有减阻性能

因而可提高流速来强化流动沸腾传热。

Abstract

The effect of additives on the flow boiling heat transfer in the vertical tube has been studied. Polyacrylamide (PAM) and octadecrylamine (ODA) were used as additives for enhancing heat transfer. Effects of fluid properties

concentration and molecular mass of PAM

and heat flux on flow boiling heat transfer were studied. In order to analyse the mechanism of enhancement of boiling heat transfer with additives

the diagram for binding energy was measured by XPS.The experimental results indicate that both PAM and ODA enhance the flow boiling heat transfer of water

and have an optimum range of concentration PAM can reduce the drag of flow boiling to enhance boiling heat transfer by increasing flow velocity.

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