Air Flow Monitoring Articles

  • Preventable Mistakes with Vortex Flow Meters

    Vortex flow meter technology is an ideal technology for many applications particularly saturated and supersaturated steam, volumetric water applications as well as flow energy management (natural gas, compressed air, steam, water) in facilities and large campuses. In some of these applications, vortex installations can be tricky and take flow expertise for the most successful installations. Kam ...


    By Sierra Instruments, Inc.

  • From a standard valve to a genuine all-rounder

    With the Vidos butterfly valve, Ebro is offering plant engineers and operators alike a simple, cost-effective solution for various dosing and discharge applications. The valve allows discharge volumes to be regulated flexibly across a very wide range. Another key benefit: the manufacturer has chosen exactly the same liners, bodies, actuators and control elements as can be found in standard ...

  • Data Centre CRAC unit efficiency improvements

    One of the main types of project Munters look at is energy efficiency improvements within the thermal management side. One of the easiest changes that can be made is swapping out the old AC powered motors for EC powered impellors. the reductions in energy is considerable, with some older belt drive unit changes measuring a saving of over 60% this is due to the design of the new impellors and the ...


    By Munters

  • The benefits of monitoring compressed air

    Compressed air is used in many manufacturing processes for many different reasons, from the actuation and control of pneumatic valves and cylinders to the operation of process machinery and tooling. It can also be used as a transport medium for bulk materials or as a purge gas. For all its uses it is nonetheless expensive. This is why, through detailed monitoring, a business can enjoy the ...


    By Contrec Europe Limited

  • Innovative safety control

    Specialists of the LAMSYSTEMS Company implemented innovative approach providing protection efficiency of the microbiological safety cabinet class II NEOTERIC. Microbiological safety cabinets are used for operator, product, and environment protection when ...


    By Lamsystems

  • Numerical modelling of air-water flows in sewer drops

    The presence of dissolved oxygen (DO) in water flows is an important factor to ensure the aerobic conditions recognised as beneficial to preventing the occurrence of detrimental effects. The incorporation of DO in wastewater flowing in sewer systems is a process widely investigated in order to quantify the effect of continuous reaeration through the air-liquid interface or air entrained due to ...


    By IWA Publishing

  • Patoka Lake Plant upgrade requires new control valves

    Patoka Lake Regional Water & Sewer District (PLRWSD) serves 11 counties in southern Indiana with a population of around 130,000. The distribution of water travels through approximately 850 miles of pipe ranging in size from sizes 3 to 30 inches and includes numerous elevated towers or ...


    By Singer Valve Inc.

  • Minute Flow Tip Video - Mass Flow Versus Volumetric Flow Technology

    When engineers and systems integrators need to measure gas flow rate in an industrial process or scientific research, there are many types of technologies to choose from.  This makes selecting the right gas flow meter a challenge. In addition to technology, engineers must consider many other parameters: price for value, cost of ownership, size of footprint, ...


    By Sierra Instruments, Inc.

  • Advantages of Using Flow Meters to Reduce Pressure Drop

    Plant operators rely on plant air pressures to maintain properly working equipment and systems. One of the most common problems affecting processing plants that utilize compressed air systems is the ability to maintain reliable air pressure throughout the distribution system. Insufficient air pressures may be due to undersized distribution piping, but it’s more commonly found that the cause ...


    By FLO-CORP

  • Numerical and experimental study of the fundamental flow characteristics of a 3D gully box under drainage

    Numerical studies regarding the influence of entrapped air on the hydraulic performance of gullies are nonexistent. This is due to the lack of a model that simulates the air-entrainment phenomena and consequently the entrapped air. In this work, we used experimental data to validate an air-entrainment model that uses a Volume-of-Fluid based method to detect the interface and the Shear-stress ...


    By IWA Publishing

  • Release of hydrogen sulfide in a sewer system under intermittent flow conditions: the Eiceira case study, in Portugal

    The presence and fate of hydrogen sulfide in wastewater systems were studied in two stretches of an intercepting sewer system located in a coastal village, in Portugal. A range of hydraulic parameters were obtained and liquid and gas phase measurements were carried out, both continuously and through intensive sampling campaigns. Upstream, where flow rates were relatively low, dissolved sulfide ...


    By IWA Publishing

  • Automatic control valves: how to assess ACV applications

    As automation and computers claimed a foothold in the operation and control of reservoirs and elevated water tanks, the industry moved the valve control from mechanical automatic control valves (ACV) to actuated butterfly and ball valves. The primary reason? Actuators can be controlled by SCADA systems, which have been almost ...


    By Singer Valve Inc.

  • Distribution of mean flow and turbulence statistics in plunge pools

    When the capacity of the spillway of a dam is exceeded for a given flood, overtopping occurs; in such cases potentially dangerous hydrodynamic actions and scour downstream of the dam need to be foreseen. Detailed studies of jets impinging in plunge pools from overflow nappe flows are scarce. This work addresses plunge pool flows, and compares numerical results against our own experiments. The ...


    By IWA Publishing

  • Safe Landings Whatever the Weather: Lufft Sensors on Airports

    Pilots, air traffic controllers and airport operators do their best to make air travel safer and more efficient. Sometimes, however, flight security depends on external factors we can hardly influence. This especially refers to risky weather conditions: Strong winds, icy cold or strong precipitation can have serious consequences. On average, 23% of all aircraft accidents and 68% of canceled ...

  • Direct Mass Flow or Volumetric: The Thermal Flow Meter Technology Advantage!

    In today’s world where everyone is watching the bottom line, you need high performance, cost-effective instrumentation—and capillary thermal mass flow meters and controllers have been proven to meet this criteria in a wide range of process applications. Thermal mass flow technology is an industry standard for mass flow control of gases because it measures flow directly, at the ...


    By Sierra Instruments, Inc.

  • Sahara in-line inspections: when speed, accuracy and on-the-spot results matter

    For more than 15 years, water operators have relied on the Sahara® leak detection platform for speed, accuracy and on-the-spot results required for inspection of complex pipeline networks typically found in urban environments. The Sahara in-line tethered ...


    By Pure Technologies

  • The challenges and benefits of local air quality monitoring

    A new generation of air quality monitors is now being offered to provide localised, real-time air quality readings – but the potential benefit is only just starting to be realised. It is generally accepted that whilst measurements from air quality reference stations are highly accurate, they are not sufficiently location-specific. Key pollutants – such as NO2 and PM2.5 ...


    By AQMesh

  • 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 ...

  • 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 ...

  • 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 ...

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