钢质T形翅片管的池沸腾传热研究

<正>1 引言 随着对传热过程这一客观规律认识的深化以及加工制造技术的进步,人们已能研制开发出各式各样的强化换热元件,并在工程实践中取代传统的光滑管从而取得省材节能的双重效果。T.C.Canavos曾预言:到目前为止,强化换热元件的工作还仅仅是个开始,但是它的好处是那样地明显,以至于普通光滑管之被淘汰只不过是一个时间的问题了。多年来的实践证明这种预言是正确的,在强化换热元件中,强化液体泡核沸腾的元件的研究进展尤为突出,自60年代末期以后,先后有4种管型实现商品化,其中一种就是T形翅片管（Gewa-T）。T形翅片管自1978年问世于原联邦德国的Wieland Worke公司以后,国内外已有多项研

AN INVESTIGATION ON POOL BOILING HEAT TRANSFER OF CARBON STEEL T-SHAPED FIN TUBE

Taking the industrial alcohol as a medium and the T - shaped fin tube as a heat transfer element, an experimental study on pool boiling heat transfer of single tube and small tube bundle have been done. The experimental results have show that the T -shaped fin tube is very effective for enhancement of pool boiling. Its boiling heat transfer coeffecient is 2-5 times of plain tube within the range of experimental heat flux. The relatve location of T -shaped tube has only a very small influence on boiling performance. The hysterisis phenomina of boiling of T -shaped tube have not been observed regardess of single tube or tube bundle within experimental heat flux. The carbon steel T -shaped fin tube and its correlation from experimental data regression with a wider application range and accuracy within ±25% have been succesfully used for butane reboiler of depropanizer.