| Issue |
E3S Web Conf.
Volume 128, 2019
XII International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2019)
|
|
|---|---|---|
| Article Number | 01016 | |
| Number of page(s) | 4 | |
| Section | Heat and Mass Transfer in Energy Systems | |
| DOI | https://doi.org/10.1051/e3sconf/201912801016 | |
| Published online | 08 November 2019 | |
The heat transfer and instabilities results during the onset of flow boiling in minichannels
1
Kielce University of Technology
al. Tysiaclecia Panstwa Polskiego 7,
25-314
Kielce,
Poland
2
Echo Investment S.A.,
Al. Solidarnosci 36,
25-323
Kielce,
Poland
* Corresponding author: beatam@tu.kielce.pl
The paper discusses the results of flow boiling heat transfer in minichannels obtained on the basis of time-dependent experiments. The main interest of the work was to investigate the occurrence of the accompanying instabilities during the boiling incipience. The essential part of the experimental standwas a test section with two minichannels, each of 1.7 mm depth. The heated element for FC–72flowing along the minichannels was a thin foil. In the tested minichannel, the temperature of the outer surface of the foil was measured due to thermoelements. The onset of flow boiling in minichannels was induced by increasing the heat flux supplied to the heater. The main aims of the investigation were to determine the heat transfer coefficient by means of the FEM with time—dependent Trefftz–type basis functions based on the Hermite interpolation and to recognize dynamic instabilities during boiling incipience. The results were illustrated as: the heat transfer coefficient, the mass flow rate and the inletpressure versustime and as boiling curves.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.