化工进展2024，Vol.43Issue(2)：602-608,7.DOI:10.16085/j.issn.1000-6613.2023-1026
微细通道内蒸汽直接接触间歇凝结压力振荡特性
Pressure oscillation characteristics of direct contact condensation in a microchannel
摘要
Abstract
In order to investigate the instantaneous pressure oscillation characteristics of steam direct contact intermittent condensation under microscale conditions,experiments and spectral analysis were conducted on the measurement of intermittent condensation pressure in a T-shaped microchannel.It was found that under the working conditions of steam temperature 100℃,steam mass flow rate 0.45g/min,supercooled water temperature 40℃ and supercooled water mass flow rate 12.65g/min,the time domain signal of intermittent condensation pressure fluctuates between-29.5kPa and 8.8kPa,and the probability density of the pressure value near 2.5kPa was the largest.In addition,through spectrum analysis,it was found that the first dominant frequency of the pressure frequency domain signal was 10Hz,which was similar to the number of cycles experienced by intermittent condensation within one second.关键词
微细通道/直接接触/间歇凝结/压力振荡/频谱分析Key words
microchannels/direct contact/chugging/pressure oscillation/spectrum analysis分类
能源科技引用本文复制引用
李树谦,张超群,张东,侯娜娜,张猛,马坤茹..微细通道内蒸汽直接接触间歇凝结压力振荡特性[J].化工进展,2024,43(2):602-608,7.基金项目
国家自然科学基金(51976052) （51976052）
河北省自然科学基金(E2020412176). （E2020412176）
