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Operational energy-efficiency improvement of municipal water pumping in California

Author

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  • DeBenedictis, A.
  • Haley, B.
  • Woo, C.K.
  • Cutter, E.

Abstract

This paper implements a normalization/regression-based approach to estimate the kWh energy and kW savings from an experimental OEEP (operational energy-efficiency program) for municipal water pumping in California. The voluminous 1-min data collected in the course of the OEEP presents a unique opportunity to analyze how VSD (variable-speed drive) technology aided by a PLC (programmable-logic-controller) may improve municipal water pumping's operational energy efficiency. Our proposed approach enables a comparison of pump operations with and without the OEEP, yielding accurate estimates for kWh energy and kW capacity savings that are useful in evaluation, monitoring, and verification of the program. Our findings lead us to conclude that (a) variability of efficacy by analyzed pump sites suggests targeted implementation of the OEEP; and (b) for a correctly-sized pump operating near its optimal kW-output value, adding a VSD and PLC can actually harm the pumping system's overall energy-efficiency.

Suggested Citation

  • DeBenedictis, A. & Haley, B. & Woo, C.K. & Cutter, E., 2013. "Operational energy-efficiency improvement of municipal water pumping in California," Energy, Elsevier, vol. 53(C), pages 237-243.
    • Handle: RePEc:eee:energy:v:53:y:2013:i:c:p:237-243
    DOI: 10.1016/j.energy.2013.02.012
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    Cited by:

    1. Wang, Zhiyuan & Qian, Zhongdong & Lu, Jie & Wu, Pengfei, 2019. "Effects of flow rate and rotational speed on pressure fluctuations in a double-suction centrifugal pump," Energy, Elsevier, vol. 170(C), pages 212-227.
    2. Olszewski, Pawel & Arafeh, Jamal, 2018. "Parametric analysis of pumping station with parallel-configured centrifugal pumps towards self-learning applications," Applied Energy, Elsevier, vol. 231(C), pages 1146-1158.
    3. Alphonsus, Ephrem Ryan & Abdullah, Mohammad Omar, 2016. "A review on the applications of programmable logic controllers (PLCs)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 60(C), pages 1185-1205.
    4. Wang, Wei & Zeng, Deliang & Liu, Jizhen & Niu, Yuguang & Cui, Can, 2014. "Feasibility analysis of changing turbine load in power plants using continuous condenser pressure adjustment," Energy, Elsevier, vol. 64(C), pages 533-540.
    5. Arun Shankar, Vishnu Kalaiselvan & Umashankar, Subramaniam & Paramasivam, Shanmugam & Hanigovszki, Norbert, 2016. "A comprehensive review on energy efficiency enhancement initiatives in centrifugal pumping system," Applied Energy, Elsevier, vol. 181(C), pages 495-513.
    6. Ramón Barberán & Diego Colás & Pilar Egea, 2019. "Water Supply and Energy in Residential Buildings: Potential Savings and Financial Profitability," Sustainability, MDPI, vol. 11(1), pages 1-12, January.
    7. Vilanova, Mateus Ricardo Nogueira & Balestieri, José Antônio Perrella, 2015. "Modeling of hydraulic and energy efficiency indicators for water supply systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 48(C), pages 540-557.

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