摘要
说明了利用流体诱导振动来强化传热和开发新型复合技术对换热器优化运行的重要性,并结合工程实际给出了振动疲劳的定义。分别对管壳式换热器壳程流体工作流速的一般分析方法和双程强化传热技术进行了评析。以换热器内能量平衡的观点为依据,给出管束长期在振动疲劳效应下工作时,计算壳程流体工作流速的一般流程。最后,确信必须通过应用新型传热元件、利用计算机技术、完善专家系统和丰富故障诊断经验,才能更加有效地利用流体激振的能量强化传热,进一步延长管束的使用寿命,使整个换热系统更好地服务于工业生产。
The importance of using fluid to induce vibration to intensify heat transfer and of developing new compound techniques for optimized running of heat exchangers was described, and the vibration fatigue was defined from the engineering view. The general analysis method for shell side fluid flow rate in shell and tube heat exchanger and two - way enhanced heat transfer technology were remarked and analyzed, respectively. On the basis of energy balance in heat exchanger, the common workflow of the shell side fluid flow rate was given when the bundles worked long time under vibration fatigue effect. At last, it must make sure that the new heat transfer units and computer technology must be used, perfect expert system must be improved and failure diagnose experiences must be enriched in order to use the fluid - induced excitation energy to enhance heat transfer more effectively,to prolong the service life of bundles, and to let all the heat exchange system serve industrial production well.
出处
《无机盐工业》
CAS
北大核心
2008年第11期57-59,共3页
Inorganic Chemicals Industry
关键词
管壳式换热器
振动疲劳
强化传热
shell and tube heat exchanger
vibration fatigue
heat transfer enhancement
