| 微牛物污垢形成的传热传质模型 |
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| 引用本文： | 曹生现,孙嘉伟,刘洋,张艳辉,杨善让,徐志明.微牛物污垢形成的传热传质模型[J].工程热物理学报,2012(6):1023-1026. |
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| 作者姓名： | 曹生现 孙嘉伟 刘洋 张艳辉 杨善让 徐志明 |
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| 作者单位： | 东北电力大学节能与测控技术研究中心;中国科学院广州能源研究所 |
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| 基金项目： | 国家自然科学基金项目(No.50806010);吉林省科技发展计划项目(No.20100432);吉林省教育厅“十一五”科学技术研究项目(吉教科合字[2010]第77号) |
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| 摘 要： | 为研究循环冷却水中微生物污垢的形成,本文综合考虑微生物的传质和吸附过程,建立了微生物污垢形成的传热传质模型。该模型基于微生物生长动力学原理,建立了水质参数与污垢热阻的关联关系,并考虑了微生物比生长速率、致垢物质的沉积与脱除速率。通过微生物污垢动态模拟实验,对相关参数进行分析测量,以验证该传热传质模型准确性。实验结果表明:由该模型计算的污垢热阻预测值能够与实验结果很好吻合,验证了该模型的正确性,其综合预测误差为5.8%。
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| 关 键 词： | 微生物污垢 传热传质模型 水质参数 微生物生长动力学 |
Heat and Mass Transfer Model of Biofouling Formation |
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| Institution: | CAO Sheng-Xian1 SUN Jia-Wei1 LIU Yang1 ZHANG Yan-Hui2 YANG Shan-Rang1 XU Zhi-Mirig1 (1.Energy Conservation and Measure-Control Technique Research Center,Northeast Dianli University,Jilin 132012,China); (2.Guangzhou Institute of Energy Conversion,Chinese Academy o[Sciences,Guangzhou 510640,China) |
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| Abstract: | For studying biofouling formation in circulating cooling water,the heat and mass transfer model of biofouling formation is established in this paper.This model considers microbial mass transfer and adsorption process.This model,based on microbial growth dynamics theory,can reflect the association between fouling resistance and water quality parameters.This model also considers the microbial specific growth rate,the deposition and removal rates of fouling material.This model has been verified through the relevant parameters obtained in biofouling dynamic simulation experiments. The fouling predictive value calculated by this model can fit with the experimental results well,the error of composite prediction is 5.8%. |
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| Keywords: | biofouling heat and mass transfer model water quality parameters microbial growth dynamics |
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