Experimental Study of Heat Transfer Enhancement and Friction Loss Induced by Inserted Rotor-assembled Strand （II） Lubricant Oil 22  

作　　者：韩崇刚 杨卫民 丁玉梅 关昌峰 李锋祥 张震 阎华 

机构地区：[1]State Key Laboratory of Organio-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China [2]Practical New-type Patent Examination Department of State Intellectual Property Office of China, Beijing 100191, China

出　　处：《Chinese Journal of Chemical Engineering》2011年第6期1069-1074,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of Beijing （3102023） and the National Science and Technology Support Plan Project （2011BAA04B02）.

摘　　要：The paper described experimental investigation of heat transfer and single-phase pressure drop through tubes with different rotor-assembled strands inserted in the Reynolds number range of 800-9000 with lubricant as working fluid. In the experiment, fixed mounts were employed to eliminate the entrance effect. The experimental results showed that the employment of fixed mounts led to a visible bias of friction factor in the laminar regime while it could not affect the Nusselt numbers significantly. Experiment for the tube inserted with rotors-assembled strand showed remarkable improvement for heat transfer with the Nusselt number increased by 200%-225% in the laminar regime and 125%-160% in the transitional regime. Meanwhile, the friction factor increased inevitably by 200%-300% within the same range of Reynolds number. The comparison of different rotor-assembled strands in-serted tubes and plain tube showed that the heat transfer benefited from the increase of the diameter of rotor-assembled strand with the same lead and the decrease of the lead of rotor-assembled strand, so does the friction factor. Based on experimental data and thorough multivariant linear normal regression method, the correlations of average Nusselt number and friction factor are established.纸通过试管描述了热转移和单相的压力落下的试验性的调查，不同装配转子的海滨作为工作液体与润滑剂在 8009000 的雷纳兹数字范围插入了。在实验，修理了山被采用消除入口效果。当它不能显著地影响 Nusselt 数字时，试验性的结果证明固定的山的雇用在 laminar 政体导致了磨擦因素的可见偏爱。为与装配转子的海滨插入的试管的实验证明为有 Nusselt 数字的热转移的显著改进在过渡政体在 laminar 政体和 125%160% 由 200%225% 增加了。同时，磨擦因素在雷纳兹数字的一样的范围以内由 200%300% 不可避免地增加了。不同装配转子的海滨的比较插入了试管，平凡试管证明热转移与一样的铅和装配转子的海滨的铅的减少一起得益于装配转子的海滨的直径的增加，磨擦因素也一样。把线性正常回归方法基于试验性的数据和彻底的 multivariant，平均 Nusselt 数字的关联和磨擦因素被建立。

关 键 词：heat transfer enhancement rotor-assembled strand friction factor thermal performance factor 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TM312[动力工程及工程热物理—热能工程]