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Proceedings of Symposium on Energy Engineering in the 21<sup>st</sup> Century (SEE2000) Volume I-IV

ISSN:
1-56700-132-7 (Print)

EFFECT OF FLUID PROPERTIES ON POOL BORING, BUBBLE DYNAMICS AND THERMAL PATTERNS ON THE WALL

Gad Hetsroni
Department of Mechanical Engineering, Technion- Israel Institute of Technology, Technion City, 32000 Haifa, Israel

Albert Mosyak
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Roman Rozenblit
Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel

Abstract

During nucleate pool boiling of pure water and water with cationic surfactants, the motion of bubbles and the temperature of the heated surface were recorded by both a high-speed video camera and an infrared radiometer. All experiments were performed at saturated boiling conditions. The boiling curves for various solutions were obtained and compared. The results show that the bubble behavior and the heat transfer mechanism for the surfactant are quite different from those of clear water. In this study the examples of the irregular behavior of nucleation sites and their interactions are presented.