flow regulator Articles
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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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Gas process automation
Problem: Many relatively simple industrial or laboratory processes that require control of flow or pressure can be greatly improved with automation. Using a mass flow controller to control a certain gas flow rate, for instance, is far more precise and has a faster speed of response than manually adjusting a needle valve while consulting a pressure gage. Such processes can be automated using ...
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Improve air sampling by measuring mass flow
How can contaminant concentration be stated unless the sample mass is known? The answer: it can’t. Without an accurate measure of the mass of air collected as a sample, the relative concentration of a contaminant—whether it be chemical or particulate—cannot be stated as a part per million, billion, or trillion. Even for sampling applications where the contamination is expressed ...
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Dams induced stage–discharge relationship variations in the upper Yangtze River basin
Although stage–discharge relationships are crucial for discharge estimations and hydrological analyses, few efforts have been taken to assess their temporal alterations in the context of dam regulation. Here, the upper Yangtze River basin serves as an example to demonstrate the influence of hydraulic structures on stage–discharge relationships evolution. Daily records of water level and river ...
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Biodiversity and its conservation in the Sundarban Mangrove Ecosystem
Abstract. The Sundarban, covering about one million ha in the delta of the rivers Ganga, Brahmaputra and Meghna is shared between Bangladesh (~60%) and India (~40%), and is the world’s largest coastal wetland. The area experiences a subtropical monsoonal climate with an annual rainfall of 1,600–1,800 mm and severe cyclonic storms. Enormous amounts of sediments carried by the rivers contribute to ...
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Corrosion-Resistant PVC Sends Metal Pipe Down the Drain Case Study
Drain, Waste and Vent (DWV) systems are necessary in every building for removing sewage and storm water from a variety of fixtures and regulating air pressure to facilitate flow. Pipes used in traditional DWV systems for commercial buildings due to code restrictions have long been made of copper and heavy cast iron. However, performance has often been an issue knowing that sanitary and storm ...
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Use Precision Hydrogen Generators as a Centralized Gas Supply Solution
Learn how to use your Peak Precision Hydrogen generator as centralized gas solution. Overview As laboratories are increasingly under pressure to streamline their operations, a reliable, consistent, stable, and safe supply of gases for applications such as gas chromatography (GC) or mass spectrometry (MS) has never been more important. Nowadays, round the clock sample analysis is commonplace, ...
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Sustainable engineering management: end-of-life vehicles with recovery in mind
Growth sustainability requires to lower pollution and raw materials consumption. The paper deals with car end-of-life recovery (reuse, recycle) regulation as new business issue, and outlines modelling and simulation paths, to assess problems in reverse logistics for items collection and process data management. The backward flow (from exhausted items, to useful provisions) is fostered to lower ...
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Improve fed-batch fermentation by measuring mass flow
How can my fermentation process yield a more consistent product? Any biochemical process is only as consistent as the parameters that control it. What makes a fed-batch fermentation process particularly susceptible to variation is the fact that it relies on many critical parameters. With an aerobic fermentation process, temperature, pO2, substrate consumption, and pH are primary critical ...
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How to use GT5000 Terra Gasmet FTIR Gas Analyzer
In this article we show you how to conduct measurements with our new portable GT5000 Terra FTIR gas analyzer. Watch the video below to learn how to take your gas analyses to the next level: How to use GT5000 Terra Gasmet FTIR Gas Analyzer Getting Familiar with The GT 5000 Terra Before detailing how to use the device, it is important to be aware of certain features. First, on the front side of ...
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Case study: MODEL: EWB3.1690 - WATER COOLED LIQUID CHILLER FOR ENGINE TESTING
Project Requirements Cooling Request: 552 kW Inlet/Outlet Evaporator Fluid Temperatures: -15/-20°C Condenser Water Temperature In/Out: 30 / 35°C Refrigerant: R449A Number of unit: 2 Destination: Romania Process Fluid: 45% ethylene ...
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From air conditioning to urban planning, defaults and standards create dysfunction by design
How can we stop outdated assumptions from forcing us to waste? Personal heaters are a summer survival tool for many office workers chilled to the bone by hyperactive ventilation systems — an act of self-defense against an epidemic of overcooling that is wasting energy and confounding comfort in not only offices but also large shops, schools and other buildings. An audit of U.S. government ...
By Ensia
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Industrial Gate Valves
Industrial valves are devices that are used to regulate liquids, gases, and slurries. The flow of liquids or gases can be controlled using these valves. This can be done through pipes and other passageways by opening, closing, and partially obstructing the passageway or pipe. Different types of Industrial Valves include: • Gate Valves • Globe Valves • Ball Valves • ...
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Using new electrodynamic cross-correlation technology for flow measurement in stacks
Abstract Continuous flow measurement is often performed in industrial stacks to enable emissions to be converted from units of concentration to units of total mass over a given period. This requirement has increasing importance with the advent of emission inventories which industry and regulators are starting to maintain. The traditional flow measurement techniques for stacks are averaging ...
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EU Industrial Policy Strategy: Investing in a smart, innovative and sustainable industry
On 13 September, in his annual State of the Union address, President Jean-Claude Juncker stated: "I want to make our industry stronger and more competitive. The new Industrial Policy Strategy we are presenting today will help our industries stay or become the world leader in innovation, digitisation and decarbonisation." The renewed EU Industrial Policy Strategy brings together all existing and ...
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What is a Gas Ball Valve?
Valves come in a wide array of types to control the flow of liquids and gases within a system. Industries rely on numerous valves in applications ranging from chemical process systems to plumbing, with some of the most common valve types including: Ball valves Butterfly valves Check valves Diaphragm valves Gate valves Globe valves Knife gate valves Parallel slide valves Pinch ...
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Diaphragm Valve Vs Globe Valve for Chemical Processing Applications
Both diaphragm valves and globe valves are used to control the flow of liquids through a pipeline. Each has both advantages and disadvantages, particularly when looking at chemical resistant valves for use with the types of aggressive media that might be found in chemical processing applications. We take a look at both diaphragm and globe valves, consider their differences and offer some guidance ...
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What are the most commonly used Valves in Chemical Processing Applications?
Chemical processing applications present specific challenges in terms of the equipment used within the processing plant; they must be manufactured from materials that will not damage or harm the end product, and also comply with industry regulations. We take a look at which chemical resistant valves are most commonly used in these industries and why they are so popular. ...
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Pattison Auto Rate and Sectional Control Systems
Sectional Control Video Transcript: Hi, Ron here with Pattison Liquid Systems. Today we are going to go over our fertilizer variable rate and sectional control system. We use all Raven Industries components for valving. We can tie into most of the existing guidance systems out there that you have in the cab already. In some cases, we will have to add a rate controller in there. But if your ...
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VC2 Vertebrae AS/SVE under highway - Case Study
SITE Active Fueling Station and Farm Store, Greeley Colorado CONTAMINATION Diesel and Gasoline range organics including LNAPL. The LNAPL plume is approximately 20,000 square feet. The dissolved-phase plume, above RBSLs, is approximately 40,000 square feet. OBJECTIVE The design involved 5 VertebraeTM well systems to provide targeted air sparging (AS) utilizing 29 independent well segments and ...
By EN Rx, Inc.
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