Experimental study on the submerged steam jet through side hole nozzle

7th International Conference on Cooling & Heating Technologies

材料科学;物理学

Wang, W.^1 ; Yuan, F.^1 ; Zhao, Q.B.^1 ; Chong, D.T.^1 ; Chen, W.X.^1 ; Yan, J.J.^1

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an

710049, China^1

关键词: Almost consistent;    Direct contact condensation;    Expansion ratio;    Oscillation characteristics;    Pressure oscillation;    Root mean square values;    Shape parameters;    Sub-cooled water;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/88/1/012029/pdf
DOI  :  10.1088/1757-899X/88/1/012029

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper, the steam shape parameters and the condensation oscillation characteristics of the direct contact condensation of submerged steam jet into subcooled water were investigated through a side hole nozzle. Meanwhile, the dimensionless jet length and the expansion ratio versus pool water temperature and steam mass flux were obtained by measuring the photographs taken by a high speed camera. Both of them increased gradually with rise of pool water temperature and steam mass flux. A comparison of the shape parameters of three different style nozzles was also achieved. And a correlation of the dimensionless jet length was obtained, the predicted data agreed well with the experimental data, while the discrepancy was within ±5%. For the pressure oscillation versus steam mass flux, the peaks and the root mean square value of pressure oscillation were almost consistent in the range of 150-400 kg·m-2·s-1, while both of them increase in the range of 400-800 kg·m-2·s-1. The positive peak and negative peak were completely symmetrical.