An experimental study was performed to investigate the tube side convective condensation under an applied DC high voltage. Experiments were performed in a horizontal, single-pass, counter-current heat exchanger with a rod electrode placed along the centre of the tube. A 8 kV DC voltage was applied across the annular gap between the central electrode and the pipe wall. The experiments were performed for mass flux in the range 45 to 156 kg/m2s and average quality of 45 percent. The application of the high voltage electric field results in electric body forces at the liquid-vapor interface which extracts the liquid from the bottom stratum towards the vapour core. The application of the 8 KV DC voltage increased heat transfer and pressure drop by factor 3 and 4.5 respectively at the lowest mass flux of 45 kg/m2s. The results show that liquid extraction from the bottom liquid stratum changed the mode of heat transfer at the bottom of the tube from convective condensation into film condensation.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4937-8
PROCEEDINGS PAPER
Horizontal Tube Side Convective Condensation Under an Applied DC Voltage
H. Sadek,
H. Sadek
McMaster University, Hamilton, ON, Canada
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J. Cotton,
J. Cotton
McMaster University, Hamilton, ON, Canada
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C. Y. Ching
C. Y. Ching
McMaster University, Hamilton, ON, Canada
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H. Sadek
McMaster University, Hamilton, ON, Canada
J. Cotton
McMaster University, Hamilton, ON, Canada
C. Y. Ching
McMaster University, Hamilton, ON, Canada
Paper No:
IHTC14-22158, pp. 31-40; 10 pages
Published Online:
March 1, 2011
Citation
Sadek, H, Cotton, J, & Ching, CY. "Horizontal Tube Side Convective Condensation Under an Applied DC Voltage." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 2. Washington, DC, USA. August 8–13, 2010. pp. 31-40. ASME. https://doi.org/10.1115/IHTC14-22158
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