Judgement of External Condensation on Pneumatic System

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Judgement of External Condensation on Pneumatic System

更新时间：2025-07-09

- Judgement of External Condensation on Pneumatic System
- Vol. 45, Issue 1, Pages: 89-93(2011)
- 作者机构：
  
  哈尔滨工业大学SMC气动技术中心,哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH138
- Online First：10 January 2011，
  
  Published：2011
- 稿件说明：
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Judgement of External Condensation on Pneumatic System[J]. 2011, 45(1): 89-93.
DOI：

Judgement of External Condensation on Pneumatic System[J]. 2011, 45(1): 89-93. DOI：

摘要

通过分析、研究气动充放气系统外部结露的发生机理

提出了一种快捷的结露判别方法.当元件表面的平衡温度达到或低于环境露点

系统将发生外部结露

反之则不会发生结露.据此机理的判别方法是:假设系统元件的初始温度为环境露点温度

在考虑系统内部气体、元件及外部空气之间的耦合传热的同时来比较若干个充放气周期结束时元件表面周期温度的变化趋势

如果元件表面周期温度逐渐升高

则系统不会发生外部结露

反之系统将发生外部结露.在气动充放气系统的二维轴对称模型中进行了数值模拟

结果表明所提方法可快速准确地判断出系统的结露情况.

Abstract

The mechanism of external condensation on a pneumatic charging and discharging system was analyzed

and then a convenient judgement method for external condensation on a pneumatic system was proposed. In the judgement method

the initial temperature of components is assumed to equal the dew point of the ambient air

and then the tendency of surface period-temperature of components for several charging and discharging periods is compared considering the coupling heat transfer of the pneumatic components

the inside air and the ambient air. If the period-temperature of components rises

the external condensation will not occur

otherwise the external condensation will occur. The numerical simulation with the two-dimensional axisymmetric model of pneumatic charging and discharging system shows that the proposed judgement method can predict external condensation quickly and accurately.

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references

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