肋形隧道表面多孔管强化沸腾传热的研究 |
| |
引用本文: | 钟理,谭盈科.肋形隧道表面多孔管强化沸腾传热的研究[J].化学工程,1990,18(4):26-32. |
| |
作者姓名: | 钟理 谭盈科 |
| |
作者单位: | 华南理工大学化学工程研究所
(钟理,谭盈科),华南理工大学化学工程研究所(王世平) |
| |
摘 要: | 本文报道了肋形隧道机械加工表面多孔管(JK-2管)单管管外池沸腾实验。实验工质为R-113和R-11。实验结果表明:对R-113和R-11工质,JK-2管沸腾给热系数分别比光滑管高2.5~15倍及1~10倍,比JK-1管高20%~150%,而且,当工质为R-113时,JK-2管比光滑管的临界热负荷高约100%。并建立了一个池沸腾膜传热系数的准数关联式,其预测值和实验值的相对误差在±15%以内。
|
关 键 词: | 沸腾传热 传热元件 表面多孔管 |
INVESTIGATION IN ENHENCED BOILING HEAT TRANSFER ON POROUS SURFACE TUBES WITH RIBBED TUNNELS |
| |
Abstract: | The pool boiling experiments,in which the working fluids are R-113 and R-11, of a mechanically made porous surface tube with ribbed tunnels(i, e. JK-2 tube)are reported. The results show that the boiling film heat-transfer coefficients of JK-2 tube are 2.5-15 times and 1-10 times respectively for R-113 and R-11 working fluids more than those of smooth tubes,and 20%-150% more than those of JK-1 tubes,and its critical heat flux for R-113 is about twice as much as a smooth tube. A dimentionless correlation of the above pool boiling film heat-transfer coefficient,which gives a relative error within ±15% between the predicted and experimental values,is established. |
| |
Keywords: | |
本文献已被 CNKI 维普 等数据库收录! |
|