airflow measuring Articles

  • Better combustion airflow monitoring at the Hunan Yiyang power plant

    China has experienced tremendous growth in electricity demand over the past two decades. Coal-fired plant construction has exploded in the country to meet its seemingly insatiable appetite for electricity. Because most power plants in China use coal as fuel, it is imperative that new coal-fired plants be as clean and efficient as possible. This demand for cleaner plants has led to new and ...


    By Sierra Instruments, Inc.

  • Emissions measurement - Discover a new way of particulate emissions measurement for light-duty vehicles

    New article from Sierra in Automotive Testing International Magazine entitled "Emissions Measuremen" explores how combining partial flow sampling and direct exhaust flow measurement provides an ideal solution for particulate emissions measurement from light-duty vehicles. With the phase-in of LEV-3 this year targeting a 3mg/mile PM limit, followed by a 1mg/ mile PM limit phasing-in by 2025, ...


    By Sierra Instruments, Inc.

  • Fluoride Emission from Anode Butts in a Cooling Tunnel

    Abstract Nordic Aluminium has been trying out a cooling tunnel for hot anode butts in order to lower the fluoride content of the working environment. The cooling tunnel is connected to the Fume Treatment Plant so that it has forced suction from it. The purpose of this study is to evaluate the effectiveness of the tunnel in removing HF emissions and make suggestions on how to make the tunnel ...


    By Boreal Laser Inc.

  • Proposed Standard Test Method for Measurement of Pneumatic Permeability of Partially Saturated Porous Materials by Flowing Air

    This proposed standard describes a laboratory test method for the measurement of the coefficient of permeability for airflow (pneumatic permeability) through porous media (e.g., soils) partially saturated with water. Control and measurement of the airflow is effected at the inlet of the specimen. The permeameter cell is fitted with dual transfer lines that isolate the specimen pressure drop from ...


    By ASTM International

  • Measuring concentrations of ammonia in ambient air or exhaust air stream using acid traps

    Received for publication May 1, 2008. Strong acid solutions have been widely used in acid traps to determine concentrations of ammonia in ambient air or exhaust air stream. A literature survey indicates the method has a long history and a wide variation in use. Through a series of studies, this paper examines several factors including volume of the acid, depth of the acid, and airflow rate; that ...

  • Southwest Research Institute® (SwRI®) Technical Report Summary; SwRI Project No. 08.16032.009, “Filter Cleanability Testing”

    This Technical Report Summary presents an overview of laboratory testing conducted at SwRI to evaluate the performance of a Diversi-Tech Green Filter Cleaning Machine under controlled laboratory conditions. In particular, the objective was to measure if and by how much, if any, airflow resistance, efficiency, and dust capacity changed for a given number of dust loading/filter cleaning cycles, ...


    By Diversitech

  • Do you need to measure air flow?

    Look no further. This hot wire thermo-anemometer is ideal for low air velocity, volume, and temperature measurement. If your desired application involves ventilation surveying, the maintenance of air conditioning systems, or environmental monitoring, this product will meet your requirements and more. Record your measurements on a slim plug-in telescopic probe and download the data ...


    By ATP Instrumentation Ltd

  • Case study of odor and indoor air quality assessment in the dewatering building at the Stickney Water Reclamation Plant

    Indoor air quality (IAQ) and odors were determined using sampling/monitoring, measurement, and modeling methods in a large dewatering building at a very large water reclamation plant. The ultimate goal was to determine control strategies to reduce the sensory impacts on the workforce and achieve odor reduction within the building. Study approaches included: (1) investigation of air mixing by ...


    By IWA Publishing

  • Green Filter Cleaning Machine case study

    This Technical Report Summary presents an overview of laboratory testing conducted at SwRI to evaluate the performance of a Diversi-Tech Green Filter Cleaning Machine under controlled laboratory conditions. In particular, the objective was to measure if and by how much, if any, airflow resistance, efficiency, and dust capacity changed for a given number of dust loading/filter cleaning cycles, ...


    By Diversitech

  • Computational modelling of airflow in urban street canyon and comparison with measurements

    The main goal of this study was to predict the airflow in a street canyon surrounded by an urban area using CFD modelling. In the street geometry described in the main part, the actual airflow directly influences air infiltration into buildings. Different models of turbulence were tested as well as specific wind boundary conditions. A correct assignment of boundary conditions (i.e., mainly wind ...


    By Inderscience Publishers

  • New Boliden Rönnskär Zinc Furnace - Case Study

    Rönnskär plant NEW BOLIDEN is the third largest copper metals supplier in Europe and handles all process stages from mining via smelting until recycling for copper, zinc and other valuable metals. The Rönnskär plant located in Skelleftehamn in northern Sweden houses one of the largest copper smelters of its kind in the world. Beside copper zinc, clinker, lead and precious ...

  • Putting the surface microphone through its paces at Airbus

    Thirty-odd years later, the A380 – the widest commercial airliner available today with seating for 525 passengers – will be entering into service. It is another testament to Airbus’ commitment to innovation and intelligent design. Therefore, Airbus came to Brüel & Kjær for the development of a transducer they could invariably use to measure sound pressure in ...

  • Airflow principles for effective industrial clean rooms

    Compromised performance. Reduced life. Increased operating costs. Just three consequences of particulates finding its way into large, complex, high-value products. Whether you're building a jet engine, assembling a satellite, or finishing a boat, cleanliness is critical for product quality. Every manufacturer of marine, aerospace, or defense products understands that an ...


    By Duroair Technologies Inc.

  • Methane emissions and airflow patterns along longwall faces and through bleeder ventilation systems

    The National Institute for Occupational Safety and Health (NIOSH) conducted an investigation of longwall face and bleeder ventilation systems using tracer gas experiments and computer network ventilation. The condition of gateroad entries, along with the caved materials permeability and porosity changes as the longwall face advances, determine the resistance of the airflow pathways within the ...


    By Inderscience Publishers

  • Facility reduces process downtime – Case Study

    A facilities subcontractor for Boeing required meters to monitor the make-up air mass flow rate into a painting facility. The make-up fans ensure compliance with OSHA and Boeing air quality standards by reducing contamination and airborne particles that result from over-spray. The Boeing standard dictates a minimum airflow of 125 SFPM to the paint booths. Should the airflow drop below this ...


    By Sierra Instruments, Inc.

  • Evaluation of turbulence from traffic using experimental data obtained in a street canyon

    The present study analyses the influence of traffic-produced turbulence (TPT) on CO concentration using full-scale measurements obtained in Gottinger Strasse (Hannover, Germany). Cases with airflow within ±11.25° from the direction perpendicular to the street axis were used. The values C = Ci–Cb (Ci is concentration measured inside the street canyon and Cb is the background concentration) were ...


    By Inderscience Publishers

  • How to Remediate under an Intersection with Horizontal Wells

    Roadway intersections within urban settings are arguably some of the most challenging areas for subsurface remediation. Many consultants tasked with remediation of challenging sites such as these become frustrated by the inability of a vertical remediation system to influence the area of concern and/or they are anxious that they will not efficiently bring their clients’ sites to ...

  • Odor Control Advances at Composting Facility

    The Rockland County (New York) Cocomposting Facility began operations in February, 1999, processing biosolids from the five publicly owned treatment works (POTWs) in the county. The Rockland County Solid Waste Management Authority (RCSWMA) owns the facility, but contracted with Waste Management of New York to design, build and operate (DBO) the 110 wet tons/day agitated bin composting facility ...


    By BioCycle Magazine

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