Energy effectiveness analysis of countercurrent humidifier

XIE Yingchun; MEI Ning

doi:10.3969/j.issn.0438-1157.2014.z1.010

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Energy effectiveness analysis of countercurrent humidifier

更新时间：2025-12-10

- Energy effectiveness analysis of countercurrent humidifier
- CIESC Journal Issue S1, Pages: 61-65(2014)
- 作者机构：
  
  中国海洋大学工程学院,山东,青岛,266100
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.z1.010
  CLC： Q053.5
- Online First：30 May 2014，
  
  Published：30 May 2014
- 稿件说明：
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XIE Yingchun, MEI Ning. Energy effectiveness analysis of countercurrent humidifier[J]. CIESC Journal, 2014, (S1): 61-65.
DOI：

XIE Yingchun, MEI Ning. Energy effectiveness analysis of countercurrent humidifier[J]. CIESC Journal, 2014, (S1): 61-65. DOI： 10.3969/j.issn.0438-1157.2014.z1.010.

摘要

采用75组逆流湿化器实验数据，对基于改进效能定义式的直接接触换热器ε-NTU方程进行了验证，并分析了压力、水气比、进口水温、进口空气湿球温度等操作参数对热容量流比和效能的影响。结果表明，改进ε-NTU方程的最大计算相对误差为27.7%，可用于工程计算；热容量流比随操作参数的变化单调增减，而效能曲线在热容量流比等于1时存在最小值拐点；固定操作压力下，进口空气湿球温度、水气比、进口水温的变化对逆流湿化器效能的影响依次减小。

Abstract

In this paper

the ε-NTU function of direct contact devices based on modified energy effectiveness definition was verified by 75 groups of countercurrent humidifier experimental data. The affection of pressure

water/air mass flow ratio

inlet water temperature and inlet air wet bulb temperature on heat capacity rate ratio and energy effectiveness were analyzed. The results show maximum relative-error of modified ε-NTU function is 27.7%

which can be used in engineering calculation. Heat capacity rate ratio change monotonically increase or decrease with operation parameters

while energy effectiveness curves has minimum inflection point at heat capacity flow being equal to 1. At fixed operating pressure

the affection of inlet air wet bulb temperature

water/air mass flow ratio and inlet water temperature on energy effectiveness of countercurrent humidifier decreases in turn.

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