Electrically Induced Shape Oscillation of Drops as a Means of Direct-Contact Heat Transfer Enhancement: Part 1—Drop Dynamics

1988 ◽  
Vol 110 (3) ◽  
pp. 695-699 ◽  
Author(s):  
N. Kaji ◽  
Y. H. Mori ◽  
Y. Tochitani
Keyword(s):  
Direct Contact ◽  
Low Frequency ◽  
Immiscible Liquid ◽  
Contact Heat ◽  
Resonant Oscillation ◽  
Liquid Drops ◽  
Contact Heat Exchange ◽  
Second Mode ◽  
Shape Oscillation ◽  
Sinusoidal Waveform

The shape oscillation of liquid drops passing through an immiscible liquid medium subject to a low-frequency (1 ∼ 16 Hz) alternating electric field having a sinusoidal waveform has been studied experimentally with the intention of investigating the enhancement of the direct-contact heat exchange between the two liquids. We have found that the field can induce, depending on its frequency, not only the resonant oscillation of the second mode of the drops, but also another peculiar oscillation that is related to the resonant oscillation of the third mode superposed on the second-mode oscillation.

Electrically Induced Shape Oscillation of Drops as a Means of Direct-Contact Heat Transfer Enhancement: Part 2—Heat Transfer

1988 ◽  
Vol 110 (3) ◽  
pp. 700-704 ◽  
Author(s):  
N. Kaji ◽  
Y. H. Mori ◽  
Y. Tochitani
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Electric Fields ◽  
Silicone Oil ◽  
Low Frequency ◽  
Transfer Enhancement ◽  
Contact Heat ◽  
Shape Oscillation ◽  
Sinusoidal Waveform ◽  
Water Drops

The heat transfer enhancement caused by the application of a low-frequency (1 ∼ 16 Hz) alternating field having the sinusoidal waveform has been studied experimentally with water drops in a medium of silicone oil. The heat transfer coefficient has been found to peak at three particular frequencies. The data newly obtained with the sinusoidal waveform are compared with earlier results obtained with electric fields having other waveforms. The waveform and the frequency that yield the largest enhancement of heat transfer are sought.

Heat Transfer Enhancement Due to Electrically Induced Resonant Oscillation of Drops

1985 ◽  
Vol 107 (4) ◽  
pp. 788-793 ◽  
Author(s):  
N. Kaji ◽  
Y. H. Mori ◽  
Y. Tochitani
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Silicone Oil ◽  
Low Frequency ◽  
Transfer Enhancement ◽  
Resonant Oscillation ◽  
Second Mode ◽  
Shape Oscillation ◽  
Enhancing Heat Transfer ◽  
Water Drops

By applying a low-frequency alternating field with a specially designed waveform, we succeeded in making water drops in a medium of silicone oil undergo a resonant shape oscillation of the second mode. The resonant oscillation was found to be quite effective for enhancing heat transfer between the medium and drops.

MILK CONCENTRATION BY DIRECT CONTACT HEAT EXCHANGE

1986 ◽  
Vol 9 (1) ◽  
pp. 63-79 ◽  
Author(s):  
A. H. ZAIDA ◽  
S. C. SARMA ◽  
P. D. GROVER ◽  
D. R. HELDMAN
Keyword(s):  
Heat Exchange ◽  
Direct Contact ◽  
Contact Heat ◽  
Contact Heat Exchange

Direct-contact heat exchange, shale production, and slag processing as examples of new efficient technologies for power generation

Energy ◽  
1987 ◽  
Vol 12 (10-11) ◽  
pp. 1097-1105
Author(s):  
R.B. Akhmedov ◽  
Z.L. Miropolsky ◽  
E.V. Samuilov ◽  
G.P. Stelmakh
Keyword(s):  
Power Generation ◽  
Heat Exchange ◽  
Direct Contact ◽  
Contact Heat ◽  
Contact Heat Exchange ◽  
Slag Processing
Sign in / Sign up

Export Citation Format

Share Document