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IR thermographic investigation of nucleate pool boiling at high heat fluxPetkovšek, Jure ...Nucleate water pool boiling at high heat flux was investigated on the 25 [micro]m titanium and stainless-steel heaters at atmospheric pressure. A high-speed IR thermographic camera was applied to ... measure the rapidly changing transient temperature field, which served as input data for calculating the transient local heat flux distributions by solving a 3-dimensional (3-D) inverse heat conduction problem (IHCP). A phenomenon of hot spot was observed at the irregular active bubble site characterized by a longer waiting time and a higher activation temperature compared to a regular active nucleation site. The results show that the temperature of the hot spot can significantly exceed the temperature of the heater in its surroundings and remains present on the boiling surface even after the bubble departure. The calculations have shown a strong reduction of the local heat flux at the spot, which represented a potential for the beginning of the boiling crisis.Source: International journal of refrigeration = Revue internationale du froid. - ISSN 0140-7007 (Vol. 61, Jan. 2016, str. 127-139)Type of material - article, component partPublish date - 2016Language - englishCOBISS.SI-ID - 14351643
Author
Petkovšek, Jure |
Heng, Yi |
Zupančič, Matevž, 1990- |
Gjerkeš, Henrik |
Cimerman, Franc, 1967- |
Golobič, Iztok
Topics
pool boiling |
high heat flux |
hot spot |
inverse heat conduction problem |
vrenje v bazenu |
visoke gostote toplotnih tokov |
lokalna pregretja |
problem inverznega prenosa toplote |
prenos toplote
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source: International journal of refrigeration = Revue internationale du froid. - ISSN 0140-7007 (Vol. 61, Jan. 2016, str. 127-139)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Petkovšek, Jure | 26177 |
Heng, Yi | ![]() |
Zupančič, Matevž, 1990- | 36685 |
Gjerkeš, Henrik | 12359 |
Cimerman, Franc, 1967- | 14122 |
Golobič, Iztok | 05566 |
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