intake works Articles

  • Lake Taneycomo surface water intake

    Client: City of Branson, Mo. Completion Date: 1997  Services Provided Microtunneling Public information program Permitting agency reviews Air backwash system Potassium permanganate feed system Inverted bulk drum storage Architectural features Architectural ...


    By Burns & McDonnell

  • Installation TOXcontrol at River Rhine intake

    The Water works Amsterdam takes surface water from the Rhine at the location Nieuwegein (the Netherlands) for theproduction of drinking water. The water quality of the Rhine can fluctuate due to the input of effluents from SWTP (22million people are living in the catchment area), and due to agricultural and industrial activities along the Rhine. This is why the Water Works Amsterdam operates an ...

  • Gas turbine performance enhancement by intake air cooling

    In this work, the influence of air cooling intake on the gas turbine performance is presented. The proposed system, together with the gas turbine, is described. A mathematical model of ACIGT (Air Cooling Intake Gas Turbine) is derived and formulated in dimensionless form from which the constraint multivariable optimisation problem was formulated. To demonstrate the effectiveness of the proposed ...


    By Inderscience Publishers

  • Discharge Measurement in a Short Intake with a Converging Section – a Case Study

    In the context of a planned retrofit and upgrade of the hydropower plant Wettingen, operated by the Elektrizitätswerke Zürich, three intakes were equipped with acoustic transit time flow measuring devices. Since the flow meters are installed in a converging section, downstream of a pier, it became necessary to perform numerical flow simulations in order to weight the acoustic path ...


    By HydroVision GmbH

  • Upgrade of turbine intake damper controllers on SS Cape Isabel - Case Study

    Overview SS Cape Isabel is a 655ft, 15,000 ton roll on/roll off cargo ship based at Long Beach and operated by the US Military Sealift Command. Launched in 1976, the ship is powered by two steam turbines. The Reason The ship’s two turbine intake radial vane dampers were equipped with pneumatic controllers (actuators) which were now obsolete. The old ...


    By Rotork

  • What Is a Cooling Tower Water Treatment System and How Does It Work?

    For industrial companies using a cooling tower for its facility, some type of cooling tower water treatment system is usually necessary to ensure an efficient process and long equipment service life. If cooling tower water is left untreated, organic growth, fouling, scaling, and corrosion can reduce plant productivity, cause plant downtime, and require costly equipment replacements down the ...


    By SAMCO Technologies, Inc.

  • What Is a Boiler Feed Water Treatment System and How Does It Work?

    For industrial companies using a boiler for its facility, some type of boiler feed water treatment system is usually necessary to ensure an efficient process and quality steam generation. The most appropriate boiler feed water treatment system will help the facility avoid costly plant downtime, expensive maintenance fees, and boiler failure as a result of scaling, ...


    By SAMCO Technologies, Inc.

  • Thermodynamic analysis of Spark Ignition engines using the Entropy Generation Minimisation method

    The recent improvement on Spark Ignition Engines has been the result of improved engine thermodynamic cycles, made possible by advances in technologies such as Variable Valve Timing (VVT) and Variable Compression Ratio (VCR). To evaluate the potential of these techniques a thermodynamic analysis is made. Numerical models were implemented in Matlab Simulink using the laws of thermodynamics and ...


    By Inderscience Publishers

  • Hydration of outdoor workers in north-west Australia.

    The consequences of environmental heat stress include a reduction in safety due to impaired concentration, a decreased work capacity, and heat illness. Maintaining adequate hydration is the single most important strategy to counteract the effects of thermal stress. In this study, the hydration status of groups of outdoor workers at mine sites and related facilities was assessed. Urine specific ...


    By Scarlet Tech Ltd.

  • Hydraulic system to ensure constant rainfall intensity (over time) when using nozzle rainfall simulators

    Rainfall simulation is widely used in the laboratory and in field work to produce artificial rainfall for small-scale surface hydrology and soil erosion studies. Simulated rainfall produced by simulators must be predictable, accurate and consistent to be useful to model the related physical processes. Pressure fluctuations in the water supply system frequently cause variation in rainfall ...


    By IWA Publishing

  • Mono nov completes major upgrade at knapp mill WTW

    Mono Pumps’ responsibilities included full risk assessment, temporary access and walkways, safety fencing to enclose the site from the public pathway, and craneage access. Mono co-ordinated all mechanical and electrical works, removing the old drum screens and installing six Mono L Series Discreens to the main and lagoon intakes atthe water treatment works. The Discreen was chosen by the customer ...


    By NOV Mono - Mono Pumps Ltd

  • Cold exergy recovery during LNG regasification through a closed Brayton cycle

    The liquified natural gas (LNG) regasification process is a source of cold exergy capable of being recovered for the exploitation of energy conversion. This paper presents a novel power plant structure that makes use of the LNG regasification process to increase the energy and exergy efficiency. The power plant consists of a closed Brayton cycle (CBC) fuelled by the flue gas released by the ...


    By Inderscience Publishers

  • Pollution survey of carbonyl compounds in train air

    The train is an important vehicle in China, but its air quality has important impacts on passengers’ health. In this work, pollution from carbonyl compounds was measured in the air of six trains. The objectives of this work were to investigate carbonyl compound levels in selected air from trains, identify their emission sources, and assess the intake of carbonyl compounds for passengers. The ...


    By Springer

  • Hydration, hydration, hydration

    Throughout the world, large numbers of manual workers perform physically demanding labour in conditions of high environmental heat stress. Although the importance of adequate hydration in combating heat stress is universally recognized, studies in a range of worker groups have demonstrated a disturbingly poor hydration level in a high proportion of at-risk workers. Management of work in hot ...


    By Scarlet Tech Ltd.

  • Effect of water addition on the exergy balances of an LPG fuelled spark ignition engine

    In this paper, we investigate the effect of water addition on the exergy balance of a conventional engine. The present work is an analytical study depending on experimental measurements. A four-cylinder, LPG fuelled SI engine is used in this work, and water injection through intake manifold is used for water addition. The cylinder pressure versus crank angle, and water, air and fuel flow rates ...


    By Inderscience Publishers

  • Exergy analysis of combustion characteristics and NOx emissions of a dual–fuel engine

    The combustion characteristics and NOx emissions of compression ignition engines working on a dual fuel mode are investigated numerically and their exergetic efficiencies are determined. The model has been validated with available experimental results. The simulation results show that dual fuel engine combustion and trend of NOx ...


    By Inderscience Publishers

  • Newport water treatment plant improvements - new membrane treatment facility case study

    City of Newport Newport, Oregon, USA HDR provided design and construction engineering services for a new water membrane filtration facility in Newport, Oregon. The plant's capacity was upgraded from 4 to 6 million gallons per day (MGD), expandable to 10 MGD. The new treatment system design includes an intake pump station, a pressurized flocculation system, membrane ...


  • Lake Fort Smith dam & reservoir enlargement

    Client: City of Lake Fort Smith, Ark.  Completion Date: 2006  Services Provided Intake tower with microtunnels Road relocation Raw water lines Outlet works Pressure reducing station Dam embankment Principal spillway Auxiliary spillway ...


    By Burns & McDonnell

  • Free-Product Recovery Methods and Issues

    During my 33 years in the environmental field, I have been involved in a lot of sites with free product.  In the 1980’s light non-aqueous phase liquids (LNAPL) such as gasoline were removed by the following methods: Bailing with a hand bailer from a well Pumping with a 2 pump system (depression pump and product pump) Pumping with a total fluids pump and separating ...


    By Enviro-Equipment, Inc.

  • Hydration status and physiological workload of UAE construction workers: A prospective longitudinal observational study

    Abstract Background: The objective of the study was to investigate the physiological responses of construction workers labouring in thermally stressful environments in the UAE using Thermal Work Limit (TWL) as a method of environmental risk assessment. Methods: The study was undertaken in May 2006. Aural temperature, fluid intake, and urine ...


    By Scarlet Tech Ltd.

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