New Pool Boiling Heat Transfer in the Presence of Low-Frequency Vibrations Into a Vertical Cylindrical Heat Source

被引：24
作者：
Atashi, H. [1 ]
Alaei, A. [1 ]
Kafshgari, M. H. [1 ]
Aeinehvand, R. [2 ]
Rahimi, S. K. [3 ]
机构：
[1] Univ Sistan & Baluchestan, Dept Chem Engn, Zahedan, Iran
[2] Amirkabir Univ Technol, Dept Polymer Engn, Tehran, Iran
[3] Univ Manchester, Sch Mat, Ctr Mat Sci, Manchester, Lancs, England
来源：
EXPERIMENTAL HEAT TRANSFER | 2014年 / 27卷 / 05期
关键词：
pool boiling; low-frequency vibration; heat transfer coefficient; cylindrical heat source; ULTRASONIC VIBRATION; THERMAL PERFORMANCE; NATURAL-CONVECTION; CARBON-DIOXIDE; TUBE; ENHANCEMENT; WATER; R134A; PIPE;
D O I：
10.1080/08916152.2013.797940
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A vertical cylinder was applied as a heat source into a water pool; the vibrations were imposed into the heater with different heat fluxes, and the frequencies were adjusted at 10, 15, 20, and 25Hz. An imaging system was employed to observe the produced bubbles around the cylindrical heat source. The results showed that the boiling heat transfer was enhanced under the vibrations with a shorter transient process, and the wall temperature also decreased. The best enhancement ratio was achieved at the frequency of 25Hz and a heat flux value of 30kW/m(2) as a consequence of imposed vibrations.
引用
收藏
页码：428 / 437
页数：10
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