标题：Investigation of precipitation fouling in corrugated plate heat exchangers
作者：Zhang, Guanmin ;Kukulka, David ;Li, Guanqiu ;Li, Wei
作者机构：[Zhang, Guanmin ] School of Energy and Power Engineering, Shandong University, Jinan 250061, China;[Li, Wei ] Department of Energy Engineering, Zhejia 更多
会议名称：ASME 2013 Heat Transfer Summer Conference, HT 2013 Collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
会议日期：14 July 2013 through 19 July 2013
来源：ASME 2013 Heat Transfer Summer Conf. Collocated with the ASME 2013 7th Int. Conf. on Energy Sustainability and the ASME 2013 11th Int. Conf. on Fuel Cell Science, Engineering and Technology, HT 2013
关键词：Corrugated plate heat exchanger; Precipitation fouling; Scanning electron microscope; Semi-empirical fouling model; Teflon coated plate
摘要：Experimental and theoretical investigations of precipitation fouling performance have been performed inside four corrugated plate heat exchangers (PHE). They have different geometry parameters, such as plate height, plate spacing, and plate angle. Heat transfer coefficient and friction factor have been obtained in the clean tests with the range of Reynolds number of 600-6000. Three precipitation fouling experiments focused on temperature influences and geometric designs have been performed. PHE with the largest hydraulic diameter and height to pitch ratio shows the best anti-fouling performance. Scanning electron microscope is used to investigate the microscopic structures of precipitation fouling. A type of Teflon coated plate has been used for testing the anti-fouling characteristic of PHEs. The coated plates show well anti-fouling performance comparing with the common SS-304 plates. A semi-empirical fouling model using Prandtl analogy has been established. The model predictions agree well with experimental data. Copyright © 2013 by ASME.