Title :
Experimental study of electrohydrodynamically augmented condensation heat transfer
Author :
Wawzyniak, M. ; Motte, E. ; Seyed-Yagoobi, J.
Author_Institution :
Dept. of Mech. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A vertical single tube condenser is built to investigate electrohydrodynamically enhanced condensation heat transfer both qualitatively and quantitatively. R-113 is used as the working fluid. Based on visual observation for various sample electrode configurations the electrode design is optimized with respect to the amount of liquid extracted from the condensation surface. Heat transfer results are presented for the optimum electrode design. The overall heat transfer conductance value of the condenser is enhanced by up to 19% by realizing the liquid extraction phenomenon. This enhancement is significant since it was obtained by changing only the condensation heat transfer coefficient. The necessary electric power input is found to be negligible representing less than 0.004% of the exchanged heat
Keywords :
condensation; electric field effects; electrodes; electrohydrodynamics; fluid dynamics; heat transfer; thermal analysis; R-113 working fluid; electric power input; electrode design; electrohydrodynamically augmented condensation heat transfer; heat transfer conductance; liquid extract; liquid extraction phenomenon; vertical single tube condenser; visual observation; Design optimization; Electrodes; Electrohydrodynamics; Heat engines; Heat transfer; Nonuniform electric fields; Refrigerants; Surface treatment; Voltage; Wire;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377649
