pressure pipe system Articles
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Comparison of viscoelastic models with a different number of parameters for transient simulations
The numerical and analytical models used for transient simulations, and hence for the pressurized pipe system diagnosis, require the definition of a rheological component related to the pipe material. The introduction and the following widespread use of polymeric material pipes, characterized by a viscoelastic behavior, increased the complexity and the number of parameters involved in this ...
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Hydraulic characterization and transient response of pressure reducing valves: laboratory experiments
A pressure reducing valve (PRV) regulates the outlet pressure regardless of the fluctuating flow and varying inlet pressure, thereby reducing leakage and mitigating the stress on the downstream water distribution network (WDN). Notwithstanding the crucial importance of PRVs, few experimental data are available in the literature. The aim of this paper is to overcome this gap by means of the ...
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A fuzzy approach for considering uncertainty in transient analysis of pipe networks
Uncertain parameters in the transient analysis of pipe networks lead to uncertain responses. Typical uncertainties are nodal demand, pipe friction coefficient and wave speed, which not only are imprecise in nature but also change significantly over time. Exploiting the fuzzy set theory and a simple scheme of the simulated annealing method, a conceptual model is developed. It can take into ...
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Subsurface trickle irrigation system for on–site wastewater disposal and reuse
Summary of Process Description The subsurface trickle irrigation system described in this report utilizes an aerobic treatment system in conjunction with a proven subsurface water application system developed by GEOFLOW, Inc. to offer a total system concept for safe and effective sewage disposal for site conditions considered marginal or unsuitable for conventional septic tank systems. The ...
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Fascinating Features of Sanitary Check Valves
Sanitary check valves are mainly used to prevent the backflow of fluids. These valves only allow the flow in one direction. As a matter of fact, they are one of the few valves that have been self-automated to open and close with no assistance. Unlike other types of valves, check valves continue to work even after the plant has lost air, electricity or manual control from the operation team. They ...
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Performances and Options of Sanitary Butterfly Valves
The temperature specifications are set so that the valve works well in different temperature ranges. This minimizes the risk of freezing or melting to obtain maximum performance. The manufacturer customizes the use option to reach more industries, the valve can be used manually or use a pneumatic actuator and an electric actuator interchangeably. The different series of valves manufactured by ...
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Fluid–structure interaction with different coupled models to analyse an accident occurring in a water supply system
Fluid–structure interaction (FSI) means that neither a fluid nor a structural system can be solved independently due to the unknown forces in the interface region. The solution for such problems is based on relations of continuum mean mechanics, solved based on finite element methods, being a computational challenge due to its complex geometry, physics of fluids and the interaction ...
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HDPE PIPE
WHAT IS HDPE PIPE? HDPE pipe (some called poly pipe) is a kind of High-density polyethylene made plastic pipe that is widely used for fluid and gas transfer. Due to many benefits of its raw material high-density polyethylene, Polyethylene pipe is often used to replace aging concrete or steel pipelines. With its innate feature high permeability and strong molecular bond, the HDPE pipe is ...
By Tee Pipe
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Hydraulic simulation of perforated pipe systems feeding vertical flow constructed wetlands
For successfully operating a vertical flow constructed wetland, the uniform distribution of wastewater on the surface of the soil filter is essential. In research, however, this aspect is often overlooked. This study presents a methodology for assessing discharge uniformity from perforated pipe systems via hydraulic modeling. First, the requirements and conditions for the simulation of ...
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Clean power in water supply systems as a sustainable solution: from planning to practical implementation
Energy efficiency and renewable energy sources have drawn a greater attention by EU, in particular for climate change policies as it can substantially cut down CO2 emissions to meet EU environmental obligations. It is well established that in drinking pipe systems Pressure Reducing Valves (PRV) are used as a mean for excess energy dissipation for the purpose of pressure control. This type of ...
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Fecal Suction Trucks
What is fecal suction truck The fecal suction truck which is mainly used for cleaning special vehicles in septic tanks and sewers. It mainly consists of a chassis, a tank body, and a suction device. The composition of the suction truck is oil water separator, water gas separator, special vacuum suction pump, volume pressure gauge, pipe network system, suction pipe, gravity valve, vacuum tank, a ...
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Sewer Cleaning Trucks
What is sewer cleaning truck Sewer Cleaning Truck, also names sewer dredging truck, multi-purpose sewage truck. This truck integrates the functions of cleaning and sucking sewage trucks to realize the multi-purpose of one truck when cleaning the sewage of large-scale pipeline community in urban sewers with high efficiency. The truck can be equipped with sprinklers, green sprinklers, front and ...
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Cooling Tower
A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact to reduce the water’s temperature. As this occurs, a small volume of water is evaporated, reducing the temperature of the water being circulated through the tower. They represent a relatively inexpensive and dependable means of removing heat from cooling water. The make-up water source is ...
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Sewage Trucks
What is sewage truck Sewage truck is a new type of sanitation vehicle that collects, transfers and transports sludge and sewage to avoid secondary pollution. The suction truck can self-prime and discharge, with fast working speed, large capacity, and convenient transportation. The suction sewage truck is suitable for collecting and transporting liquid materials such as manure, mud and crude ...
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Installation Steps of Sanitary Ball Valve
The sanitary ball valve uses a special molding process to allow a dense sealing surface to achieve zero leakage. Its sphere and shank are fused as one to remove the valve stem from pressure due to pressure changes within the possibility of pressure pieces and, therefore, achieve the fundamental guarantee of safety. It uses a full metal hard welding process that is resistant to strong corrosion. ...
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A multi-step genetic algorithm model for ensuring cost-effectiveness and adequate water pressure in a trunk/limb mains pipe system
A water distribution network is the most expensive component of a water supply system; consequently, the overall planning, installation, and rehabilitation processes should be implemented accurately and carefully. The main issue that developing countries are facing is how to optimize the distribution network to meet increasing water demand. To tackle the issue, this paper proposes a new concept ...
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No Silver Bullet Technology For Pipeline Condition Assessment
For utilities with large-diameter networks, waiting for failures to occur before repairing or replacing highly critical mains is not an option. With a large amount of buried water infrastructure reaching the end of its service life, operators have every incentive to take a proactive approach to asset management. Nowhere is this more critical than in busy urban centres. The fallout from an ...
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Installing and Gluing Flexible PVC Pipe
Installing and Gluing PVC Flexible (Flex) Pipe In order to get a proper bond and create a full, permanent seal when installing PVC Flex Pipe we have several suggestions. If you abide by these simple instructions you can minimize problems, leaks, and system failures! Ensure the pipe is clean and dry. Wipe away any dirt or dust and water. Use a PVC Primer on the pipe and in the fitting ...
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Tar and Pitch
Tar and Pitch Pumping liquid tar and pitch with zero leakage and reduced maintenance The pumps used have to be heated and have wear resistant bearings. Tar is often transported in ships. The pumps on board bring the tar to the storage tank from which it is pumped to the distillation towers where it is fragmented. During the process about half the tar ends up as pitch. Pitch is among others ...
By DESMI A/S
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Revolutionizing Water Management with Intelligent Water Quality Sensors
Unveiling Real-Time Insights for Efficient and Sustainable Water Resource Management For millennia, water has been the lifeblood of our planet, sustaining life and shaping civilizations. However, the challenges of managing this precious resource have become increasingly complex in the face of climate change, population growth, and pollution. In this context, innovative technologies like ...
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