论文部分内容阅读
一、前言换热器广泛应用于炼油、化工、电力、热能动力、原子能、冶金、轻工、食品等工业部门。效能的好坏与节能的关系甚大。在低位能的利用和小温差传热更需要高效能的传热设备。列管式换热器是换热装置中应用最广的一种。近年来国内在强化换热管的研制和应用方面取得了很大成绩。在管外强化传热方面有兰石所等研制的低翅片螺纹管,华南工学院化学工程研究所研制的缺口锯齿管(C 型
I. Introduction Heat exchangers are widely used in oil refining, chemical, electric power, thermal power, atomic energy, metallurgy, light industry, food and other industrial sectors. The relationship between good and bad and energy efficiency is great. In the low energy use and small temperature difference heat transfer more efficient heat transfer equipment. Tube heat exchangers are the most widely used type of heat exchanger. In recent years, China has made great achievements in the development and application of enhanced heat exchange tubes. In the pipe to strengthen heat transfer have developed by Lan Shi, such as low-fin thread, South China Institute of Chemical Engineering Institute developed notch sawtooth tube (C