flow limiters Articles
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Reducing Fugitive Emissions with Stainless Steel Valves
Fugitive emissions can be a problem for any industry, but they are especially problematic in the petrochemical and refining industries. The leaking gas from these industries is composed of many different hydrocarbons such as equipment leaks and gas from the manufacturing process that have been found to cause respiratory problems, heart disease, cancer and other illnesses. What are the Fugitive ...
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BUYERS SUPPLIER SURVEY
Conducting in-depth buyer and supplier assessment survey can help you meet your strategic and tactical sourcing needs, helping you reduce the total cost and time of procurement, broaden supplier mix and increase negotiation information support. When supplier performance deteriorates, such as insufficient cash flow, credit limit, capital shortage, and even bankruptcy plan, these financial ...
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Linking North Slope of Alaska climate, hydrology, and fish migration
Arctic grayling (Thymallus arcticus) have a life-history strategy specifically adapted to the extreme climate of the North. These fish migrate to spawning grounds just after breakup in the spring, then migrate to feeding sites in early summer, and finally in the fall migrate back to their overwintering sites. The Kuparuk River is a perennial stream originating in the northern foothills of the ...
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Management of power transactions using particle swarm optimisation
In this paper, a particle swarm optimisation (PSO) technique has been proposed for congestion management in different market structures comprising pool model, mix of pool and bilateral contracts by change in generation, such that the line flow which violate the limit are alleviated and the system security is maintained. The first stage describes a technique for selection of suitable participating ...
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Coupled solution of oil slick and depth averaged tidal currents on three-dimensional geometry of Persian Gulf
Abstract: In this paper, simulation of oil spill due to tidal currents in Persian Gulf is performed by coupled solution of the hydrodynamics equations and an equation for convection and diffusion of the oil. The hydrodynamic equations utilized in this work consist of depth average equations of continuity and motion in two dimensional horizontal planes. The effect of evaporation is considered in ...
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OGI Range – Long Distance Applications
A discussion of range for OGI technology is more relevant for the OGI fixed solutions, such as EyeCGas 24/7 series of products, where the camera is expected to automatically alert for leaks from longer distance (>100 meters). Since LWIR uncooled OGI cameras are typically far less sensitive than cooled MWIR OGI cameras, they are not the preferable choice for an OGI fixed solution when larger ...
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A large-scale hydroclimatological perspective on western European river flow regimes
A novel flow regime classification scheme was applied to 141 river basins across western Europe, providing more robust analysis of space–time variability in regimes and their driving hydroclimatological processes. Regime shape (timing) and magnitude (size) were classified to regionalise long-term average flow regimes and to quantify year-to-year variation in regimes for each basin. Six ...
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Fuzzy logic rule–based modelling of natural spring flow in a hilly catchment of Tehri–Garhwal district, Uttarakhand, India
This paper demonstrates how a fuzzy rule–based algorithm can provide reasonable weekly estimates of spring flow using limited climatological parameters. A fuzzy logic rule–based model (FLRBM) is developed to estimate the weekly spring flow in a hilly watershed. The average rainfall, evaporation, temperature and relative humidity were incorporated to verify their effects on spring flow. The effect ...
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Optimal location of artificial recharge of treated wastewater using fuzzy logic approach
Increasing water demands in light of limited water resources have intensified exploitation and drawdown of groundwater. On the other hand, rising water demand has accelerated wastewater production. Therefore, urban wastewater management via artificial recharge may play a significant role in aquifer management. While site selection for artificial recharge projects is a major challenge, fuzzy ...
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The Gerald Desmond Bridge Replacement Project - Case Study
Location: Long Beach, CA Owner: Port of Long Beach Engineer: SFI Project Revenue: $196,450.00 Project Timeline: 2019 Challenge: The new $1.5B Gerald Desmond Bridge at the bustling Port of Long Beach is the first cable-stayed vehicular structure built in California and must conform to rigorous seismic standards. The challenge was to create sufficient drawdown without lowering the ...
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Main Things to Check when Buying Rug Cleaners
Rug cleaners, which are also known as carpet cleaners, carpet extractors, carpet shampooers, or upholstery cleaners, are widely used for cleaning mats, carpets, seat upholstery, and rugs. These are very popular machines, known for their ease of use and simple method of working. These are used in shopping malls, hospitals, hotels, factories, and retail outlets. Buying these machines is not ...
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Performance of Residential Wastewater Treatment Technologies under New Stressing Conditions related to Lifestyle Changes
Over the past two decades, major changes in family lifestyles have been observed. People travel more, eat in restaurants more frequently and, in many families, both parents work outside the home. Based on information from Statistics Canada, in 1970, 31% of Canadian families had both parents working outside the home. In 1990, this percentage has risen to more than 70%. As well, the higher divorce ...
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Headworks Screening for Smaller Plants
Water treatment facilities in smaller towns and villages, as well as treatment works supporting institutions, prisons, resorts or remote facilities, have difficult choices to make when selecting a headworks system. All require a solids control strategy, but lower flows and smaller budgets limit the available equipment options. A number of different types of equipment can be used to meet these ...
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Advantages of renting your commercial equipment
Waste handling equipment When your business needs commercial equipment, such as compactors and balers, you have three options. One is to buy your equipment brand new, the other is to buy it second-hand, and the third option is to rent. Ultimately, in the long run, you will always pay more in rental costs if you opt to rent out the equipment you need for your business when compared with the ...
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Use of a Finite Element Code to Model Complex Mine Water Problems
Abstract: Numerical models are now used routinely to predict ground-water inflows to both surface and underground mines and to help design dewatering systems. Two of the more complex problems encountered in mine dewatering are 1) predicting the configuration of the phreatic surface and height of the seepage face in pit highwalls for slope stability analysis and 2) predicting inflow to ...
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Removing heavy iron deposits improves effluent output and Decreases costs - Case Study
The Problem At a local manufacturing facility, ground water pumped with #6 oil was heavily impacted with iron deposits. Heated water and product was being pumped into the existing oil water separator, but the iron fouling the unit and the downstream carbon filter and dry well limited flow. Frequent carbon replacement was required and was very costly. The Solution Hydro Quip, Inc. provided a ...
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Knowing All About Mobile Car Wash Equipment
Almost all cleaning machines can be used as car wash equipment. Steam cleaners, pressure washers, and carpet cleaners are used for car detailing. But, the irony is that none of these machines alone are capable of cleaning the entire vehicles. This fact leads to a peculiar situation. Most vehicle cleaning professionals make use of multiple types of car wash equipment. Most people make use of a ...
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Improvement of multi-parameter-based feed-forward coagulant dosing control systems with feed-back functionalities
Coagulant dosing control in drinking and wastewater treatment plants (WWTPs) is often limited to flow proportional concepts. The advanced multi-parameter-based dosing control systems have significantly reduced coagulant consumption and improved outlet qualities. Due to the long retention time in separation stages, these models are mostly based on feed-forward (FF) models. This paper ...
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Latest Features of Carpet Cleaning Machines
Carpet cleaning machines are commonly used for cleaning soft surfaces such as carpets and upholstery. Pressure washers and steam cleaners have high output power, but are used for hard surfaces. Pressure washers draw power from their output pressure, while steam cleaners offer cleaning power through high output temperature. On the other hand, carpet cleaning machines have moderate pressure levels ...
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Monitoring Oxygen and Carbon Monoxide in Dive Tanks
I'm convinced of the benefit of analyzing tanks for O2 percentage and the presence of CO (carbon monoxide). On my last dive trip I found that my Cootwo was giving really wonky readings (O2 randomly off by 5~10%, despite having a good sensor, recent calibration, etc) and the CO sensor was due for replacement/calibration. With Divenav out of business (or at least, out of the business of hardware ...
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