制冷学报Issue(1)：84-88,5.DOI:10.3969/j.issn.0253-4339.2013.01.084
Ni-P-PTFE化学复合镀层导热性能的研究
Investigation on Thermal Conductivity of Ni-P-PTFE Composite Coating on Copper Tubes
摘要
Abstract
Copper tubes covered by Ni-P-PTFE composite coating can mitigate fouling adhesion on the heat exchange surface. However, the impact of composite coating on the thermal conduction of copper tubes should be considered. A thermal resistance method was utilized to measure the heat transfer coefficient of copper tubes with Ni-P-PTFE composite coatings. The thermal conductivities of these Ni-P-PTFE composite coatings were gained by means of Wilson plot in the end. The effects of Ni, PTFE, C and P contents were discussed on the thermal conductivity of Ni-P-PTFE composite coating. The results showed the thermal conductivity of these Ni-P-PTFE composite coatings were weakened by the increases of PTFE and P contents, but enhanced when the C content increased. It reached a peak value 23.12 W/(m.K) when w(PTFE)=1.76%, w(C)=3.82% and w(P)=10.81%, respectively. Although the thermal conductivities of the composite coatings were lower, their thermal resistances in the total heat transfer process were from 9.91×10-5 to 1.6×10-4(m2.K)/W due to their small thickness. Therefore, the tubes with Ni-P-PTFE composite coatings still kept high thermal conductivities 314.88~357.55W/(m.K).关键词
导热性能/热阻测量法/Ni-P-PTFE化学复合镀层Key words
thermal conductivity/thermal resistance method/Ni-P-PTFE composite coating分类
通用工业技术引用本文复制引用
何凯龙,陈颖,钟天明,莫松平..Ni-P-PTFE化学复合镀层导热性能的研究[J].制冷学报,2013,(1):84-88,5.基金项目
本文受广东省部产学研结合项目(2009B090200016)和广东省部产学研结合项目(2011B090400374)资助.(The project was supported by Industry-Academia-Research project of Guangdong province(No.2009B090200016) and Industry-Academia-Research project of Foshan in Guangdong Province( No.2011B090400374).) （2009B090200016）
