Heat transfer research on enhanced heating surfaces in pool boiling
1 AGH University of Science and Technology, al A. Mickiewicza 30, 30-059 Krakow, Poland
2 Kielce University of Technology, Al. 1000-lecia P.P. 7, 25-314 Kielce, Poland
* Corresponding author: email@example.com
Published online: 12 May 2017
The paper focuses on the analysis of the enhanced surfaces in such applications as boiling heat transfer. The testing measurement module with enhanced heating surfaces was used for pool boiling research. Pool boiling experiments were conducted with distilled water at atmospheric pressure in the vessel using an enhanced sample as the bottom heating surface. The samples are soldered to a copper heating block of the round cross-section .They were placed: in the fluid (saturation temperature measurement), under the sample for temperature determination. A vessel made of four flat glass panes was used for visualization. The heated surfaces in contact with the fluid differed in roughness were smooth or enhanced. This paper analyzes the effects of the microstructured heated surface on the heat transfer coefficient. The results are presented as relationships between the heat transfer coefficient and the heat flux and as boiling curves. The experimental data obtained for the two types of enhanced heated surfaces was compared with the results recorded for the smooth heated surface. The highest local values of the heat transfer coefficient were reported for the enhanced surfaces.
© The Authors, published by EDP Sciences, 2017
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