Rapid changes in flow rate can cause serious problems
in water distribution systems. High water hammer
pressure can permanently deform or rupture a pipeline
and its components, and low pressure can collapse a
pipeline, causing leaks, disrupting service, and contaminating
pipelines. One way to protect distribution systems
from damage is to install a pressure relief valve (PRV).
The authors illustrate the challenges inherent in PRV
design and show that an appropriately designed PRV
can protect some systems from excessively high or low
pressures and that inappropriate use can actually
worsen a system's transient response. The general principles
of PRV use and selection are presented in two
case studies along with a sensitivity analysis of PRV
parameters. This study contributes to a cost-effective
solution to excessively low- or high-pressure control in
distribution systems, making water suppliers more
aware of the need for numerical simulation of transient
flow and water hammer control issues in water supply
and distribution systems. Includes 4 references, figures.
| Edition : | Vol. 100 - No. 8 |
| File Size : | 1
file
, 630 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 8 |
| Published : | 08/01/2008 |
