New research shows how a special tool called a noise logger can detect leaks accurately and efficiently, before major roadwork is required.
The world is approaching a water crisis. According to the International Water Management Institute, 33 per cent of the world’s population will experience water scarcity by 2025.
One main cause is leaks. Twenty to 30 per cent of treated water is lost in systems because of this simple and fixable problem.
Repairs need to be as precise as possible because excavation and resurfacing is a costly undertaking. Digging up more than one location, or more area than is needed for the repair, can lead to a problematic domino effect including traffic disruption, commuter frustration and loss of business.
Meanwhile, there are major public health risks associated with contaminants entering the water system through holes in pipes.
Luckily, researchers from Concordia University in Montreal have an innovative solution. In an article recently published by the American Society of Civil Engineers, Tarek Zayed, professor in the Department of Building, Civil and Environmental Engineering, shows how a special tool called a noise logger can detect leaks accurately and efficiently, before major roadwork is required.
“This approach can reduce the duration of a leak, as well as the cost and time involved in locating the site in need of repair,” says Zayed, who co-wrote the article with post-doctoral fellow Mohammed S. El-Abbassy, recent graduate Fadi Mosleh and Ahmed Senouci from the University of Houston and Qatar University.
For the study, the researchers went all the way to Doha, Qatar to test their theories. The small nation has one of the lowest precipitation rates in the world, as well as one of the highest evaporation rates — meaning the little rain that falls is quickly reabsorbed by the atmosphere as water vapour.
“Qatar is currently facing significant challenges regarding its water supply,” explains Zayed. “Its water distribution network currently suffers from 30 to 35 per cent water loss due to leakage.”
Working on-site at Qatar University, the team installed the noise loggers along the institution’s main water network and used them to record the constant noise generated by a leak over a two-hour time period. They then analyzed the readings, comparing sound level and sound spread. A consistent anomaly meant a leak investigation was required.
Over several weeks of monitoring they collected data from across 140 different points. They then ran simulations using mathematical models to determine the location of the leaks. The facilities management team at Qatar University reported back on the actual locations and found that the team had estimated with 99.5 per cent accuracy.
For Zayed and his team, the next step is to collect leak-data surveys of real-life pipelines from municipalities that use noise loggers and develop customized leak location prediction models.
The Latest on: Noise logger
via Google News
The Latest on: Noise logger
- ‘I Want to Meet My Teacher’on January 25, 2021 at 4:00 am
At the December protest, children stood next to their parents and held signs that read “I Want to Meet My Teacher” and “Don’t Mute Me.” A little girl gripped a pennant on a stick: “I Want Real School.
- Convergence Instruments’ technology supports Greater Santiago noise maps in Chileon January 21, 2021 at 12:17 pm
In 2008, the Chilean Ministry of the Environnent (MMA) started the Noise Maps’ program for cities in Chile. In 2011, the first version of the Noise Map of Greater Santiago was completed, and during ...
- Trump’s Out; Biden’s In: What You Need To Know If You’re Invested In Stockson January 19, 2021 at 12:55 pm
For example, when President Kennedy was assassinated November 22, 1963, stocks fell 2.89%, then immediately rose, logging a 17.0% ... we must learn to dismiss the “noise” and focus on what ...
- Riz Ahmed Makes Some Noiseon January 19, 2021 at 6:00 am
With his buzzy performance in 'Sound of Metal' — which required him to learn sign language and drumming — plus a new wife and a booming company, the soft-spoken actor and rapper is having his loudest ...
- Hacking The Aether: How Data Crosses The Air-Gapon January 18, 2021 at 4:00 pm
It’s possible to listen to computer keyboards, each key emits a slightly different noise when pressed so it’s possible to log key strokes without actually requiring logging software.
- Noise.cash: Social Microblogging App Fueled by Bitcoin Cash Tips Gathers Tractionon January 17, 2021 at 10:30 pm
Read.cash devs have introduced another application called noise.cash that allows people to make noise using much shorter messages.
- An ambush in Brazil's Amazon that killed a forest guardianon January 14, 2021 at 4:00 pm
Laércio Guajajara said the men — who when not hunting are Forest Guardians protecting the Arariboia indigenous area — heard a noise in the ... an ambush by illegal loggers that left one ...
- 'Carbon-neutrality is a fairy tale': how the race for renewables is burning Europe's forestson January 13, 2021 at 10:50 pm
But still the noise comes.” Forests cover 2m hectares ... the 1979 EU birds directive and the 1992 habitats directive. But logging is governed by domestic laws, and Estonia permits it as long ...
- how the race for renewables is burning Europe’s forests – Jawebon January 13, 2021 at 10:26 pm
Kalev Järvik stands on a bald patch of land in the heart of Estonia’s Haanja nature reserve and remembers when he could walk straight from one side of the reserve to the other under a canopy of trees.
- Women who seriously assaulted two police in Glen Iris released on bailon January 10, 2021 at 11:36 am
You can now click/tap LISTEN to start the live stream. Thanks for logging in. You can now log in once to listen live, watch live, join competitions, enjoy exclusive ...
via Bing News