Pressure Elevation of High-Performance Steam-Water Condensing-Injector
| Autor: | Kazuhiro Sawa, Hiroto Sakashita, Yifei Xu, Takashi Hibiki, Shuichiro Miwa |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Fluid Flow and Transfer Processes
Jet (fluid) Materials science Mechanical Engineering Compressed fluid Mass flow Nozzle 02 engineering and technology Injector Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas law.invention Diffuser (thermodynamics) Volumetric flow rate Subcooling law 0103 physical sciences 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer. 170:120971 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2021.120971 |
| Popis: | The steam-water condensing injector (SI) is a device capable of producing high-pressure subcooled liquid streams by combining steam and subcooled liquid jet at a higher pressure than the inlet streams. The present study investigated the SI's pressure elevation mechanism using supersonic steam and a subcooled water jet. The experiment was carried out using central-water jet type SI equipped with an overflow port at the inlet steam pressures of 0.3 to 0.7 MPa and inlet liquid mass flow rates of 0.4 to 0.7 kg/s. Axial pressure and temperature distributions were measured at the mixing nozzle and diffuser sections to study the pressure elevation mechanism. Based on the analytical foundation laid by Grolmes (1968), the one-dimensional analytical model was implemented by treating SI's two-phase flow regimes as inverted annular and dispersed flows. For the current SI geometry and operating conditions, the present one-dimensional model could predict the axial pressure distribution of the SI and the maximum discharging pressure with reasonable accuracy for sufficiently high inlet flowrate ratio conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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