高频与感应式电子除垢仪除垢特性对比

通过搭建电子除垢仪除垢特性对比实验台,模拟蒸发冷设备实际运行工况,对高频与感应式电子除垢仪对蒸发冷设备喷淋系统电子除垢特性进行对比实验研究。结果表明：两种除垢仪均能增加水的活性,加速污垢的溶解、脱落,减少换热管外污垢热阻,但作用效果有差异。经过约150 h的实验,在高频电子除垢仪与感应式电子除垢仪作用下,污垢热阻最高降幅分别为17.81%、20.35%,但在感应式电子除垢仪作用下,污垢热阻减小阶段多次出现。扫描电镜分析发现,在高频电子除垢仪作用下,污垢晶体主要为针棒状结构;而在感应式电子除垢仪作用下,污垢晶体主要为大块散乱状结构。由独立实验可知,高频电子除垢仪与感应式电子除垢仪均能有效降低循环...

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Bibliographic Details
Published in制冷学报 Vol. 39; no. 1; pp. 108 - 120
Main Author 章立新;李鑫;高明;马麟;赵圣仙
Format Journal Article
LanguageChinese
Published 上海理工大学能源与动力工程学院&上海市动力工程多相流动与传热重点实验室 上海200093%上海安得利给水设备有限公司 上海200041 2018
Subjects
喷淋水系统
污垢热阻
电子除垢
蒸发冷设备
electronic descaling
污垢热阻
evaporative cooling equipment
spray water system
电子除垢
fouling resistance
蒸发冷设备
喷淋水系统
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ISSN0253-4339
DOI10.3969/j.issn.0253-4339.2018.01.108

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Summary:通过搭建电子除垢仪除垢特性对比实验台,模拟蒸发冷设备实际运行工况,对高频与感应式电子除垢仪对蒸发冷设备喷淋系统电子除垢特性进行对比实验研究。结果表明：两种除垢仪均能增加水的活性,加速污垢的溶解、脱落,减少换热管外污垢热阻,但作用效果有差异。经过约150 h的实验,在高频电子除垢仪与感应式电子除垢仪作用下,污垢热阻最高降幅分别为17.81%、20.35%,但在感应式电子除垢仪作用下,污垢热阻减小阶段多次出现。扫描电镜分析发现,在高频电子除垢仪作用下,污垢晶体主要为针棒状结构;而在感应式电子除垢仪作用下,污垢晶体主要为大块散乱状结构。由独立实验可知,高频电子除垢仪与感应式电子除垢仪均能有效降低循环水的硬度,经过12 h的实验,循环水硬度降幅分别为40.35%和37.04%。
Bibliography:Zhang Lixin1 , Li Xin1 , Gao Ming1 , Ma Lin1 , Zhao Shengxian2（1. School of Energy and Power Engineering ＆ Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093,China;2. Shanghai An- deli Water Supply Equipment Co. , Ltd. , Shanghai, 200041, China）
11-2182/TB
Under actual operating conditions, a closed cooling tower was simulated and the descaling characteristics of an induction-type electronic descaling device and a high-frequency electronic descaling device on the spray water side of an evaporative cooler was investiga-ted experimentally. The results show that both kinds of electronic descaling instruments can accelerate the dissolution of dirt and reduce fouling resistance on the outside of the heat transfer tubes, but the effects are different. During the 150 h of the experiment, the greatest decline in the fouling resistance using the high-frequency and induction-type electronic descaling devices was 17. 81% an
ISSN:0253-4339
DOI:10.3969/j.issn.0253-4339.2018.01.108