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A Study on Characteristics of Under Registration Rate for Water Meters to Increase the Accounted Water Rate

유수율 향상을 위한 수도미터의 불감률 특성 연구

  • Lee, Dong-Keun (K-water Institute, Korea Water Resources Corporation) ;
  • Park, Jong-Ho (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.)
  • 이동근 (한국수자원공사 K-water연구원) ;
  • 박종호 (충남대학교 기계공학과)
  • Received : 2010.04.07
  • Accepted : 2010.06.09
  • Published : 2010.08.01

Abstract

The reliability of a water meter for measuring the water flow-rate and subsequent analysis of the measured water depends on the accuracy of measurement. The under registration of a water meter causes many problems for operators, such as loss in revenue and a decrease in the rate of measured water. The purpose of this study is to support and development core technology, such as efficient operations management and adoption of the best mechanism for providing different services by experimentally. In this study, experiments were conducted using water meters with different diameters, manufacturers, years of usage and the specific uses. On the basis of the results, the water meter confirmed that the error of minimum flow rate which will use long becomes larger more in the direction of minus.

수도미터를 통한 유량측정 및 분석결과의 신뢰성은 측정정확도에 따라 좌우된다. 수도미터의 불감률은 수도사업자에게 재정손실이나 유수율 감소와 같은 많은 문제점을 야기시킨다. 본 연구의 목적은 실험적인 방법을 통하여 효율적인 운영관리 기술과 차별화된 서비스를 제공하기 위한 최적의 메커니즘 채택과 같은 핵심기술 개발과 지원을 하고자 함이다. 본 연구에서는 중고 수도미터를 이용하여 구경, 제작사, 사용연수 및 사용량별로 실험적으로 수행하였다. 연구결과 사용연수가 길어질수록 최소유량에 서의 오차가 "-" 방향으로 커지는 것을 확인하였다.

Keywords

References

  1. Nam, K. H. and Kim, H. C., 2006, "Rate of Under-Registration and Counterplan of Meters," Proceeding of the KSWQ and KSWW(B) Fall Annual Conference, pp. 103-109.
  2. The Office of Waterworks Seoul Metropolitan Government, 2007, "A Study on Improvement of Rate of Accounted Water."
  3. Ministry of Environment, 2008, "Statistics of Waterworks."
  4. Lee, D. K., Park, J. Y., Lee, H. S., Park, T. J. and Roh, S. M., 2009, "Rate of Under- Registration and Counterplan of Flowmeter."
  5. Agency for Technical and Standards, 2006, "Technical Regulation for Water meters."
  6. Lim, K. W., 2000, "A Study on the Evaluation of Measurement Uncertainty for the National Calibration and Test Organizations(Liquid Flow)," Journal of the SAREK, Vol. 12, No. 11, pp. 1012-1019.
  7. KRISS, 1998, "Guide to the Expression of Uncertainty in Measurement."
  8. ISO 4185, 1980, "Measurement of Liquid Flow in Closed Conduits - Weighing Method."

Cited by

  1. Characteristics of Multipath Ultrasonic Flowmeter Installed Upstream and Downstream of Flow Disturbance Factors-Contraction, Expansion, and Tee Pipe vol.36, pp.8, 2012, https://doi.org/10.3795/KSME-B.2012.36.8.877