Experimental Study on Condensation of Steam Jet Injection in Submerged Condition

• Published in: Shànghăi jiāotōng dàxué xuébào Vol. 56; no. 1; pp. 1 - 13
• Main Author: ZHANG Wei, JIANG Chaofei, YE Ya’nan, WANG Xiaoyan, GONG Zili, HU Chen, XIAO Yao, GU Hanyang
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of Journal of Shanghai Jiao Tong University 01.01.2022
• Subjects: direct contact condensation; pressure oscillation; steam jet injection; steam plume; steam plume length
• ISSN: 1006-2467
• DOI: 10.16183/j.cnki.jsjtu.2020.302

An experimental study is conducted to find the characteristics of steam plume and pressure oscillation on direct contact condensation by a side-hole sparger. Synchronal measuring of transient pressure of the steam plume is gained from the high-speed camera and high-pressure sensor respectively. The influence of steam mass flux and water temperature on direct contact condensation characteristic are presented and its regime map is plotted. Then, the dynamic connections of transient pressure and steam plume in different condensation regimes are analyzed. It is found that high frequency pressure oscillation and the collapse of detached bubbles occur at the same time. Together with the condensing and disappearing process of the collapse of detached bubbles, the intensity of pressure oscillation decays exponentially in a vibration way. The changing trends of steam plume length in condensation oscillation regime and stable condensation regime are also obtained, which shows that the steam plume increases with the ste