摘要
滑油冷却器是核电厂广泛使用的润滑设备。多孔金属材料因能显著强化传热而日益得到关注。为了研究多孔金属材料对管内滑油强化传热效果,以68#润滑油为换热工质,不同孔隙率的多孔金属材料为研究对象,通过改变换热管内多孔金属材料的种类、段数,实验研究管内滑油强化传热特性及其阻力特性。结果表明:在实验范围内,多孔金属材料能显著强化润滑油的传热;油侧努赛尔数与加入的多孔金属材料段数近似成正比;多孔结构是影响其强化传热效果的主要因素。
Oil cooler is a device widely used in nuclear power plants. Porous metal materials are of concern because of the good performance to enhance the heat transfer. In order to study the feasibility of the enhanced heat transfer of porous metal materials to oil, 68# turbine oil was chosen as the heat transfer working medium, and kinds of porous metal materials with different porosities were chosen as the experimental objects. By changing the number of porous metal materials, the heat transfer and frictional resistance characteristics of oil inside tube were studied experimentally. The results show that the porous metal materials can enhance the heat transfer of oil inside tube within the experimental range. The Nusselt number of the oil side is in direct proportion to the number of porous metal materials. Moreover, the structure of porous metal materials is the most important factor of the enhanced heat transfer.
作者
刘小丫
丁铭
李春
阎昌琪
齐云飞
Liu Xiaoya Ding Ming Li Chun Yan Changqi Qi Yunfei(Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2017年第3期24-28,共5页
Nuclear Power Engineering
关键词
滑油冷却器
多孔金属材料
管内强化换热
传热特性
阻力特性
Oil cooler, Porous metal material, Enhanced heat transfer inside tube, Heat transfer characteristics, Frictional characteristics
