Boiling Synchronization in Two Parallel Minichannels—Image Analysis

Energies

Gabriela Rafałko¹  Hubert Grzybowski¹  Iwona Zaborowska¹  Romuald Mosdorf¹ 

[1] Department of Mechanics and Applied Computer Science, Faculty of Mechanical Engineering Bialystok University of Technology, Wiejska 45 C, 15-351 Bialystok, Poland;

关键词: two-phase flow instability;    image analysis;    flow pattern;    flow boiling;    boiling synchronization;   

DOI  :  10.3390/en13061409

来源: DOAJ

【 摘 要 】

In this paper, the boiling synchronization of two-phase flow patterns in two parallel minichannels of 1 mm in diameter with connected compressible volumes was analyzed. The analysis was performed using images recorded with a high-speed camera. The degree of synchronization between channels was evaluated by assessing the presence of liquid flow in the small part of the minichannels. It can be concluded that boiling is synchronized when small bubble flow or wavy annular flow occur in neighboring channels. The occurrence of slug flow in one channel causes the boiling in neighboring channels to become unsynchronized. The result of the image analysis shows that the correlation coefficient based on the evaluation of the presence of liquid flow in the small part of the minichannels over a long enough time period allows for the detection of boiling synchronization.

【 授权许可】

Unknown