Water Supply and Wastewater Management


  • Case Studies: Zero Net Energy Non-Residential Buildings
    April 12, 2015
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    Six non-residential buildings were designed and built to perform at zero net energy (ZNE) consumption over the course of a year. Extensively monitored under the Pacific Gas & Electric Company's ZNE Pilot Program, each has proven to meet or exceed that level of performance for at least one year of post-construction occupancy.

    These case studies show that building industry leaders who target this new level of building performance can meet this challenge, reinforcing California's reputation for being the incubator and early adopter of transformative ideas with practical feasibility.

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  • Design Brief: Demand Response
    June 17, 2013
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    Demand response (DR) is an energy management strategy that allows electricity consumers to receive financial compensation for temporarily reducing or rescheduling power use upon request. DR creates opportunities for building owners and managers to realize financial, operational, and environmental benefits by changing energy use patterns in response to market signals.

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  • e-News #74: Combined Heat and Power
    July 30, 2010
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    A building may contain a vast array of efficiency measures, or it may be old and inefficient. Either way, the electricity used in the building will likely be produced with inherent inefficiencies. The efficiency of fossil fuel based electricity production averages 34% (although new combined cycle plants can exceed 50% efficiency). The ultimate efficiency of any building pulling electricity from the grid is limited by that number.

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  • Design Brief: Centrifugal Pump Application and Optimization
    May 24, 2010
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    Centrifugal pumps perform many important functions to control the built environment. The physics and basic mechanics of pumps have not changed substantially in the last century.

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  • Design Brief: Drivepower
    March 31, 2010
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    To truly minimize the energy use of a drivepower system-which includes the motor, its controls, and the connection between the motor and the equipment it drives-designers need to consider how these components operate as a system rather than looking at them on an individual basis.

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  • Design Brief: Industrial Process Heat Recovery
    October 26, 2009

    Process heating is a significant source of energy consumption in the industrial and manufacturing sectors, and it often results in a large amount of waste heat that is discharged into the atmosphere.

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  • Design Brief: Pumping System Troubleshooting
    June 11, 2009
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    This brief explores techniques for identifying and solving pump system problems commonly encountered in existing buildings during retro-commissioning processes.

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  • Case Studies: Wastewater Treatment Plant Achieves Energy and Resource Savings with Efficient Design
    July 1, 2003
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    In 2005, the Dublin San Ramon Services District (DSRSD) redesigned their plant to increase its capacity and better serve the residents of Dublin and San Ramon. The plant's engineers worked with PG&E staff under the auspices of a statewide investor-owned utility sponsored energy efficiency program, Savings By Design (SBD), to analyze the plant's energy consumption patterns and design it as efficiently as possible.

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  • e-News #23: Using a System Approach to Drivepower
    January 5, 2001
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    An average building may contain hundreds of motors, whirring and chugging away unseen. Most of them are used in heating, ventilating, and air conditioning applications as drivers for fans, pumps, and air conditioning compressors.

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