Water | |
Empirical Formulas for Calculation of Negative Pressure Difference in Vacuum Pipelines | |
Marek Kalenik1  | |
[1] Division of Water Supply and Sewage Systems, Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences—SGGW, Nowoursynowska St. 159, Warsaw 02-776, Poland; E-Mail | |
关键词: sewage; domestic sewage; vacuum sewage system; negative pressure difference; vacuum pipeline; | |
DOI : 10.3390/w7105284 | |
来源: mdpi | |
【 摘 要 】
The paper presents the analysis of results of empirical investigations of a negative pressure difference in vacuum pipelines with internal diameters of 57, 81, 102mm. The investigations were performed in an experimental installation of a vacuum sewage system, built in a laboratory hall on a scale of 1:1. The paper contains a review of the literature concerning two-phase flows (liquid-gas) in horizontal, vertical and diagonal pipelines. It presents the construction and working principles of the experimental installation of vacuum sewage system in steady and unsteady conditions during a two-phase flow of water and air. It also presents a methodology for determination of formula for calculation of a negative pressure difference in vacuum pipelines. The results obtained from the measurements of the negative pressure difference Δ
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202003190005382ZK.pdf | 376KB | download |