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November 2023 Press Release

The International Group for Hydraulic Efficiency Measurement (IGHEM) is Preparing for Its Next Conference

The International Group for Hydraulic Efficiency Measurement (IGHEM) is having its biennial conference at the University of British Columbia, Vancouver, British Columbia Canada. Please mark your calendars for August 12 through 14 2024.  The conference will be organized by Jan Buermans of ASL AQFlow Inc., with the support of the IGHEM committee. The conference will focus on the experimental, theoretical and computational approaches enhancing measurements in hydro power plants with topics that include for example, Application of AI in the field of turbine monitoring, Case studies of efficiency measurements, Importance of the efficiency evaluation of hydro power plants and hydro systems, and many more. To find out more details about the conference topics please visit our website here: IGHEM 2024 website   

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CNR-ASFM

January 2023 Press Release

Acoustic Scintillation Flow Meter Used for Flow Measurements at the Beaucaire Bulb Turbine Hydropower Plant, France

ASL AQFlow is pleased to announce that our Acoustic Scintillation Flow Meter (ASFM) is being used by the Compagnie Nationale du Rhône (CNR) to conduct flow measurements at the Beaucaire Hydropower Plant on the Rhône River in France as part of an electrical production optimization program. This site generates approximately 210 MW of hydroelectricity from six bulb turbines. Figure 1 shows the instrumented frame that is lowered into the hydroelectric plant intake to the turbine and is equipped with an ASFM array that measures flow across 30 paths. Prior to this installation, the ASFM was successfully deployed at the Châteauneuf-du-Rhône, Montélimar-Henri-Poincaré- hydroelectric plant, another of CNR’s facilities on the Rhône River. The quality of the data collected at this site was considered very high and results were repeatable with an average uncertainty of roughly 0.4%.   

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CNR-ASFM

January 2022 Press Release

Acoustic Scintillation Flow Method Mentioned in Recent American Society of Mechanical Engineers Performance Test Code Document

The acoustic scintillation method for measuring turbine discharge, used by ASL AQFlow’s Acoustic Scintillation Flow Meter (ASFM) has been mentioned in the latest American Society of Mechanical Engineers Performance Test Code (ASME PTC 18-2020) for Hydraulic Turbines and Pump-Turbines. Although the method has not yet been adopted into code, it is being evaluated for future code releases. Acoustic scintillation is considered to be a permissible technique to measure hydroelectric turbine discharge when those testing understand and agree on its use, or use this technique in conjunction with a code-approved method. A detailed explanation of how the method works and guidance on its use appears in the nonmandatory appendix C section of this code document.  

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ASME-PTC 18-2020

September 2021 Press Release

Acoustic Scintillation Flow Meter Installation Replaces Over-Velocity Detection System at BC Hydro’s Wahleach Project

ASL AQFlow’s Acoustic Scintillation Flow Meter (ASFM) has been installed at the BC Hydro’s Wahleach project near Hope, BC, as a replacement to an existing Over-Velocity Detection System (OVDS). Hydroelectric operations use these detection systems in order to detect if the tunnel or penstock downstream of the intake has a leak or rupture. In such cases, intake gates are closed to prevent uncontrolled release of water that can be potentially dangerous for the public and may cause damage to properties and infrastructure.

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BC Hydro

July 2017 Newsletter

Highlights

  • Large scale flow comparison between acoustic time of
    flight (ATT) and Acoustic Scintillation Flow Meter (AS)

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AQFlow partnership

July 2013 Newsletter

Highlights

  • Upgrade to Nova Scotia Power ASFM
  • AQFlow-EdF-Hydro Quebec Partnership
  • 4th Workshop on Turbine Flow Measurement
  • AQFlow and trhe ASME and IEC Code Committees

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AQFlow partnership

July 2012 Newsletter

Highlights

ASFM in three more comparison tests:

  • Frieira HPP, Spain – Gas Natural Fenosa
  • Slapy HPP, Czech Republic
  • Vaugris Dam, France – CNR

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Slapy HPP Czech Republic

July 2011 Newsletter

Highlights

  • New Partnership - AQFlow, Hydro Quebec, EDF
  • ASFM-Proven Technology
  • Upcoming Conferences

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July 2010 Newsletter

Highlights

  • CEATI and PTC-18 Flow Comparison test results
  • 30-Path ASFM sold to CNR France
  • AQFlow at upcoming conferences

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Riva del Garda

July 2009 Newsletter

Highlights

  • Recent Successes with the ASFM
  • AQFlow and Hydro Quebec
  • AQFlow and Douglas County PUD
  • AQFlow at upcoming conferences


August 2007 Newsletter

Highlights

  • The ASFM at Wells Dam
  • Flow measurement Comparison testing
  • Electricité de France purchases a new ASFM

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wells dam

November 2006 Newsletter

Highlights

  • The ASFM in Europe
  • ASFM sale to Korea
  • Turbine discharge measurements at Wells Dam, WA


June 2005 Newsletter

Highlights

  • Relative flow measurements in difficult hydraulic
    conditions at TW Sullivan Plant, Oregon, USA
  • Turbine testing with several flow measurement systems
    at Lower Granite Dam, WA
  • The ASFM at Wells Dam, WA, USA


June 2004 ~ Newsletter

Highlights
  • AQFlow Installs ASFM Advantage
  • CFD Analysis at La Grande 1 Power Plant
  • Client Reviews of ASFM

November 2003 ~ Newsletter

dam

Highlights

  • AQFlow in Croatia
  • Latest CFD Modeling

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July 2003 ~ Newsletter

Highlights
  • Douglas County PUD buys ASFM Advantage for Wells Dam
  • Power Plant Efficiency at Little Goose Dam
  • Latest CFD Modeling
  • Flow Measurements at Hydro Kennebec

 

January 2003 ~ Newsletter

Highlights
  • ASFM at Wells Dam
  • ASFM Circular™ R&D project
  • CFD Modeling in intakes

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Riva del Garda

March 2002 ~ Newsletter

Highlights

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Riva del Garda

August 2001~ Newsletter

Highlights
  • WaterPower XII
  • ASL AQFlow service contracts
  • Other Hydro Solutions

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WaterPower 12
May 2001~ Newsletter
Highlights
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Chelan PUD