Title :
The effect of an electric field on boiling heat transfer of refrigerant-11-boiling on a single tube
Author :
Kawahira, Hiroyoshi ; Kubo, Yoshiaki ; Yokoyama, Takashi ; Ogata, Junji
Author_Institution :
Tokyo Electr. Power Co. Inc., Tokyo, Japan
Abstract :
The effect of an electric field on boiling refrigerant R-11 was investigated experimentally. The test section consisted of a flat plate and a single tube with several rows of electrode wire. The influence of refrigerant oil, the surface roughness of the test tube, and polarity of an applied voltage on the heat transfer performance were studied. The following results were obtained: as the applied voltage increased, the number of boiling bubbles decreased but the heat transfer coefficient increased; no deterioration of heat by the oil contamination occurred; and the polarity of the applied voltage affected the boiling heat transfer
Keywords :
boiling; electric field effects; heat transfer; boiling heat transfer; bubbles; electric field effects; electrode; oil contamination; polarity; refrigerant R-11; surface roughness; Electrodes; Heat transfer; Petroleum; Refrigerants; Resistance heating; Rough surfaces; Surface roughness; Testing; Voltage; Wire;
Journal_Title :
Industry Applications, IEEE Transactions on
