Title

正弦型波纹换热管传热特性实验研究

Translated Titles

The Experimental Research on the Heat Transfer Properties of Sinusoidal Corrugated Tubes

Authors

刘洁(Jie Liu);张和平(He-Ping Zhang);裴威(Wei Pei)

Key Words

正弦型波纹管 ; 传热特性 ; 实验研究 ; 努赛尔数 ; sinusoidal corrugated tube ; heat transfer properties ; experimental research ; Nusselt number

PublicationName

石油機械

Volume or Term/Year and Month of Publication

33卷3期(2005 / 03 / 01)

Page #

1 - 3

Content Language

簡體中文

Chinese Abstract

The sinusoidal corrugated tubes, manufactured based on corrugated tubes, were presented for developing high efficiency heat exchangers. By means of vapor-water heat-transfer experiment under low Reynolds numbers(1800<Re<24000), the heat transfer properties of 3 sinusoidal corrugated tubes of different sizes were investigated and compared to straight tubes respectively. The result shows that, the heat transfer coefficients increase with the Reynolds numbers and the sinusoidal corrugated tubes can transfer heat more effectively than the straight tubes, and with the same Reynolds number, the heat transfer coefficients of sine-corrugated tubes are 2.5~3.5 times as much as that of straight tubes; under the condition of the same equivalent diameter, the heat transfer coefficients decrease with long pitch and deep peak. In addition, when the Prandtl numbers are in a high range, they are influential to the Nusselt numbers. At last, the criterion equation for heat transfer laws of heat exchanger tubes was derived based on the experiment data.

English Abstract

The sinusoidal corrugated tubes, manufactured based on corrugated tubes, were presented for developing high efficiency heat exchangers. By means of vapor-water heat-transfer experiment under low Reynolds numbers(1800<Re<24000), the heat transfer properties of 3 sinusoidal corrugated tubes of different sizes were investigated and compared to straight tubes respectively. The result shows that, the heat transfer coefficients increase with the Reynolds numbers and the sinusoidal corrugated tubes can transfer heat more effectively than the straight tubes, and with the same Reynolds number, the heat transfer coefficients of sine-corrugated tubes are 2.5~3.5 times as much as that of straight tubes; under the condition of the same equivalent diameter, the heat transfer coefficients decrease with long pitch and deep peak. In addition, when the Prandtl numbers are in a high range, they are influential to the Nusselt numbers. At last, the criterion equation for heat transfer laws of heat exchanger tubes was derived based on the experiment data.

Topic Category 工程學 > 機械工程
工程學 > 礦冶與冶金工程