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Investigation on ADDIN CNKISM.UserStyleTemperature Uniformity in a Gas‐liquid Two‐phase Mixing System Stirred by Top‐blown Air ▴
Author(s) -
Yang K.,
Li Z.,
Wang Q.,
Hu X.,
Zhu X.,
Wang H.
Publication year - 2021
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.202000014
Subject(s) - mixing (physics) , thermodynamics , materials science , heat transfer , phase (matter) , field (mathematics) , analytical chemistry (journal) , mechanics , chemistry , physics , chromatography , mathematics , organic chemistry , quantum mechanics , pure mathematics
Abstract The purpose of this study is to introduce a new method for quantifying the uniformity of temperature fields. A top‐blown gas‐stirring gas‐liquid two‐phase mixing test bench was set up, combined with an infrared imager, to obtain the temperature distribution of the gas‐liquid two‐phase mixing process. Gas‐liquid two‐phase energy conversion occurs during the physical reaction. The top‐blown gas is in direct contact with liquids of different temperatures to take away some of the heat, causing a difference in the internal temperature distribution of the liquid. The gas is air and the liquid is synthetic heat transfer oil. Using image segmentation and mathematical analogy of local discrepancy functions, the temperature distribution difference and temperature field non‐uniformity coefficient (NUC) of the rectangular region in the actual temperature field are obtained. By calculating the standard deviation of the non‐uniformity coefficient of the temperature field in each working condition, the fluctuation of the uniformity of the temperature field with time is obtained.