air flow monitoring Articles

  • The Fundamentals of the Air Sampler Calibration-Verification Process

    INTRODUCTION The calibration of an air sampling instrument using a reference air flow calibrator requires attention to scientific detail in order to establish that the instrument’s reported values are correctly stated and valid under the actual operating conditions of the air sampling instrument. DEFINITIONS For the purposes of this ...

  • Cemex plant Ruedersdorf - Case Study

    CEMEX Deutschland AG is one of the biggest producers of ready-mixed-concrete, cement and minerals. In Germany CEMEX employs a staff of approximately 3,200 people and is part of the International CEMEX Group with a head count of 50,000. After the German re-unification the Company acquired the existing cement plant in Ruedersdorf. Investments to save CEMEX invested ...

  • Lessons learnt from evaluating full-scale ammonium feedback control in three large wastewater treatment plants

    Three large wastewater treatment plants in Sweden participate in a project evaluating different types of ammonium feedback controllers in full-scale operation. The goal is to improve process monitoring, maintain effluent water quality and save energy. The paper presents the outcome of the long-term evaluation of controllers. Based on the experiences gained from the full-scale implementations, a ...


    By IWA Publishing

  • In-Plane Air Flow Through Needle-Punched, Nonwoven Geotextiles Under Normal Loading

    Knowledge of the in-plane permeability of nonwoven geotextiles to air and other gases has important applications including, for example, the transport and collection of methane gas beneath landfill caps. The results of in-plane flow measurements of air through eight different needle-punched, nonwoven geotextiles are presented. Air flow was measured using a radial flow device under a range of ...


    By ASTM International

  • Air Flow Meters to Measure Air Velocity and Air Pressure

    Air flow meters are used to measure air velocity and air pressure. Depending on the type of application, air flow meters are made as hot-wire air flow meters or pocket weather flow meters, both of which can measure air velocity and air pressure. The results of measuring the air velocity can be stored in the memory of the device depending on the model. There are even data loggers for air velocity ...


    By PCE Instruments

  • The all NEW TunnelTech 305 Air Flow Monitor

    With over 30 years’ experience in the tunnelling market, CODEL are excited to have recently launched the 6th generation single point flow monitor utilising the very latest ultrasonic technology. CODEL’s tunnel monitoring products simplify the challenge of sourcing, installing and maintaining a highly accurate and reliable tunnel monitoring solution. The TunnelTech 305 offers low ...


    By Codel International Ltd

  • Holcim Ste. Genevieve Cement Plant - Case Study

    Big and beautiful The new cement manufacturing facility of Holcim (US) at Ste. Genevieve with a production capacity of four million tonnes per year went on stream mid-2009 and is one of the most environmentally-efficient cement plants in the Holcim Group. It is 40 percent more energy-efficient than the Holcim (US) plants that were closed in 2009 and emits 10 to 25 percent less ...

  • Thermal mass flow meter for Compressed air solution - Case study

    iCenta delivered the IC-MCF Air Flow Meter complete with ancillary accessories. The IC-MCF air flow meter is indispensable for managing energy use with compressed air / nitrogen up to 12000 L/min (normal). The inexpensive mass flow meter provides precision and wide rangeability as a result of being micro-machined, integration of a micro-flow sensor and advanced channel-design technology. The ...


    By iCenta Controls Ltd

  • Luminant Oak Grove Power Station - Case Study

    Powering Texas Luminant, a subsidiary of Energy Future Holdings Corp. (EFH) -which owns competitive and regulated energy subsidiaries in Texas -is the largest electricity generator in Texas. Unit two of the Oak Grove Power plant near Franklin in Robertson County, TX went online in the middle of 2010. Fluor, the project’s EPC company, completed the plant in 35 months and used ...

  • Parametric study of the dispersion aspects in a street-canyon area

    Most modern cities practically consist of street canyons, making monitoring of the level of their pollution an important issue. In this study, a Computational Fluid Dynamics (CFD) simulation of pollutant dispersion was performed for a real, complex-geometry street canyon for various wind directions and speeds. Typical street-canyon effects – like the formation of a longitudinal vortex for wind ...


    By Inderscience Publishers

  • Field measurements within a quarter of a city including a street canyon to produce a validation data set

    Air pollutants and meteorological parameters were measured continuously by in situ instruments, path-averaging techniques (up to three DOAS systems), and SODAR inside a street canyon and in the surrounding area of 1 km x 1 km (Gottinger Strasse in Hanover, Germany) from 2001 until 2003 which are available in the data bank ValiData for validation of microscale models. During three IOPs tracer ...


    By Inderscience Publishers

  • Air and nitrogen flow measurement in controlled atmosphere (CA) room

    Transporting refrigerated perishable goods such as fruits and vegetables in Controlled Atmosphere (CA) is an economical solution for long distance shipments as well as long-term storage. The freshness of perishables is preserved by refrigeration and modification of the gas concentrations in CA rooms which provides reduced respiration (C6H12O6 + 6O2 à 6CO2 + 6H2O + Heat) of fruits and ...

  • Metek Introduces the New Multi-Path Ultrasonic Anemometers

    Our news report about recent instrumentations or measurements of our customers which might be of special interest for other web site visitors. The reports are added on the fly whenever we have received such information. The experienced support is highly welcome and appreciated. Metek is proud to present the new members of the uSonic-family: The ultrasonic anemometers uSonic-3 Class A ...

  • 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

  • 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

  • Iron Ore Pelletizing Plants - Case Study

    Changing the iron ore processing chain The iron ore being mined globally can approximately be divided equally into boulders and fines. For further processing boulders have to be sized to 10-30 mm for blast furnaces and 6-18 mm for sponge iron plants. Iron ore in a finely ground state is not easily transported or readily processed .The iron ore pelletizing process agglomerates the fine ...

  • 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 ...

  • How To Make a Fan Performance Curve

    Fan Curve Development for Centrifugal Fan Applications The fan performance curve shows the pressure and flow rate that the fan will produce for any system connected to it. The actual fan performance is dependent upon the detail design of each system. System designers calculate process air requirements, and the fan application engineer selects fans to meet those requirements, which are ...


    By AirPro Fan & Blower Company

  • Building Ventilation – The Proper Air Changes Per Hour (ACH)

    Posted by atlanticei If you need ventilation consulting or testing discussed in this article, call us at 1-800-344-4414 or e-mail us at info@atlenv.com for details and a free estimate. Written By:  Robert E. Sheriff, MS, CIH, CSP, ...

  • Volume measurement in the supply air flow of exhaust gas cleaning - Case Study

    Client: Incineration plant (Germany) Product: Hearth furnace coke (HFC), lime hydrate Conveyed volumes:   64 - 100 kg/h Conveyor mechanism: Rotary valve Installation location: Conveying air stream, exhaust gas cleaning ...


    By ENVEA

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