Visualization of working fluid flow in gravity assisted heat pipe
University of Zilina, Department of Mechanical engineering, Department of Power Engineering, Univerzitna 8215/1, 010126 Žilina, Slovakia
a Corresponding author: email@example.com
Published online: 6 May 2015
Heat pipe is device working with phase changes of working fluid inside hermetically closed pipe at specific pressure. The phase changes of working fluid from fluid to vapor and vice versa help heat pipe to transport high heat flux. The article deal about construction and processes casing in heat pipe during operation. Experiment visualization of working fluid flow is performed with glass heat pipe filed with ethanol. The visualization of working fluid flow explains the phenomena as working fluid boiling, nucleation of bubbles, vapor flow, vapor condensation on the wall, vapor and condensate flow interaction, flow down condensate film thickness on the wall, occurred during the heat pipe operation.
© Owned by the authors, published by EDP Sciences, 2015
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