文献检索作业.doc

实习一:文摘数据库检索-用NSTL检索下列文献：1. 检索换热器方面西文期刊根据实验确定的螺旋式换热器的新的形式和解决方案2蒸发式冷凝器方面中文期刊论文9253板式蒸发式冷凝器的性能实验3检索有关压缩机方面的外文会议文献26278 New rig safe package air compressors unveiled 带有新的安全封装设备的空气压缩机面世4检索水冷却塔方面的中文会议文献215 电厂海水冷却塔防腐技术 实习二1. 用中文期刊全文数据库检索化工机械设备防腐方面的文献2.用中国优秀硕士论文数据库检索有关换热器方面硕士论文【英文题名】The Comparative Study and Numerical Simulation of Shell-and-Tube Heat Exchangers【作者中文名】罗再祥;【导师】朱康玲;【学位授予单位】华中科技大学;【学科专业名称】应用化学【学位年度】2008【论文级别】硕士【网络出版投稿人】华中科技大学【网络出版投稿时间】2009-09-08【关键词】管壳式换热器; 强化传热; 数值模拟; FLUENT;【英文关键词】shell-and-tube heat exchanger; heat transfer enhancement; numerical simulation; FLUENT;【中文摘要】换热器是化工、炼油、动力、食品、轻工、原子能、制药、航空及其它许多工业部门广泛使用的一种通用工艺设备。由于能源价格飙升,对换热器的强化传热研究一直备受关注。管壳式换热器由于结构可靠、技术成熟、适用面广,是目前国内外换热设备的主要结构形式。管壳式换热器多采用单弓形折流板,和圆管管束结构,该换热器制造相对简单、适应性强、处理量大,但壳侧流动阻力大,实际传热效果远低于理论值。 为了提高整个换热器的综合传热性能,本文将低流阻、高传热效率的壳程传热支撑结构与高效强化传热管相结合,从实验和数值模拟两方面对传热过程进行了研究,研究的主要内容如下: 表面强化传热通常已被用于工艺过程并改善传热设备的整体性能。本文研究了圆管换热器、波节管换热器和螺旋波纹管换热器的传热性能并做了对比。实验结果表明了在雷诺数从5000到30000的范围内波节管对换热器的对流强化传热非常有效。与圆管相比,波节管管内换热系数提高了167.8%,螺旋波纹管提高了60.2%。 在研究换热器壳程结构的基础上,研究发现折流杆换热器比折流板换热器具有更低的压力损失和更高的传热系数。同时折流杆换热器还具有好的抗震性能、防结垢等优点。折流.【英文摘要】Heat exchangers are widely used in many industrial fields such as chemical industry,oil industry,power industry, food industry, light industry, atomic energy industry, pharmaceutical industry, aviation industry. Because the energy prices are soaring, the research about enhancing heat transfer of heat exchangers receives the widespread recognition. Shell-and-tube heat exchanger has many advantages such as reliable structure,mature technology and good adaptability, so it is the mostly used structure at home a.3.用中国重要会议论文数据库检索干燥机方面的会议论文2. 中华人民共和国知识产权局检索换热器方面发明专利文献5.用Springer Link检索空气分离器方面期刊论文6.用Wiley Online在线检索压力容器方面期刊论文7.用ebsco数据库检索空气干燥器方面期刊论文8.用proquest检索换热器方面学位论文A general transient-based technique for the evaluation of overall heat transfer coefficient in a heat exchanger.一个常规的基于换热器的全面的热交换系数的改革的转换技术出版号:MQ82546作者: Mokamati, Satyanarayana Venkata. 学校: University of New Brunswick (Canada). 学位: M.Sc.E.指导老师: Prasad, Ramesh C.,eadvisor 学科: Engineering,Mechanical. 来源: Masters Abstracts International 出版日期: 2002 ISBN: 9780612825468 语言: English 摘要In order to evaluate the performance of a heat exchanger, it is essential to determine the overall heat transfer coefficient. This can be determined using a steady state method which is time consuming and involves long waiting time for the steady state to be reached. In this thesis, a general technique is developed using the transient-based method to evaluate the overall heat transfer coefficient in a concentric tube heat exchanger. The transient-based method described here provides a speedy measurement of the overall heat transfer coefficient. This technique can be used for a parallel flow or counter flow heat exchanger with equal or unequal velocities of fluids involving liquid-to-liquid or liquid-to-gas heat transfer. Eulers implicit method and a finite element method combined with the Galerkin approach is used to solve the energy equations of a concentric tube heat exchanger for the determination of the overall heat transfer coefficient. In this work, the proposed method has also been applied to study the performance of an augmentation device for heat transfer enhancement. Several heat exchanger tubes enhanced with wire coil inserts having different wire diameters (0.813 1.016 mm, 1.575 mm) and coil pitches (8.47 mm, 5.08 mm, 3.63 mm, 2.82 mm) are tested. The experimental results indicate that the wire coil