摘要
The characteristics of pressure drop and heat transfer of air across the corrugated tubes with three values of row number were investigated experimentally by measuring the average heat transfer coefficients and friction factors. The results were compared with that of the corresponding same row number smooth tube bundles.The corresponding correlation for the Nusselt numbers and Euler numbers vs the Reynolds numbers for the corrugated tubes were obtained. It was found that the corrugated tube bundles will reach the developed state at a smaller row number compared with the smooth tube bundles. Within the range of Reynolds numbers of the present work, the heat transfer coefficients and the friction factors of the corrugated tube bundles were 13.6%-29.2% and 3.2%-60.0% higher than those of the smooth tube bundles respectively.
The characteristics of pressure drop and heat transfer of air across the corrugated tubes with three values of row number were investigated experimentally by measuring the average heat transfer coefficients and friction factors. The results were compared with that of the corresponding same row number smooth tube bundles. The corresponding correlation for the Nusselt numbers and Euler numbers vs. the Reynolds numbers for the corrugated tubes were obtained. It was found that the corrugated tube bundles will reach the developed state at a smaller row number compared with the smooth tube bundles. Within the range of Reynolds numbers of the present work, the heat transfer coefficients and the friction factors of the corrugated tube bundles were 13.6%-29.2% and 3.2%-60.0% higher than those of the smooth tube bundles respectively.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2003年第7期1009-1012,共4页
CIESC Journal
基金
国家重点基础研究发展规划项目(No G2 0 0 0 0 2 63 0 3 )~~
关键词
波纹管束
充分发展
传热强化
空气横掠波纹管束
流动
Air
Correlation methods
Flow of fluids
Friction
Heat transfer coefficients
Reynolds number
