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  • e-News #67: Cool Thermal Energy Storage
    October 9, 2009
    1 comments

    In California, electrical  power demand reaches its peak during the hottest summer days, mostly due to air  conditioning loads, which account for almost 28% of California's peak electrical demand. A cool storage  thermal energy storage system (TES) provides a means for shifting all or part  of a facility's cooling energy use to off-peak hours, when energy costs are  lower and cooling systems can potentially run more efficiently. A TES system  uses cooling equipment at night to remove heat from a thermal reservoir of  chilled water or ice, which can then be used for space cooling throughout the day.

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  • e-News #66: Considering Carbon
    August 14, 2009
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    Buildings account for 38% of carbon dioxide (CO2) emitted in the United States, according to the U.S. Green Building Council, primarily due to the use of fossil fuels to provide energy for the heating, cooling, and operation of buildings. In addition to releasing CO2, fossil fuel combustion emits other greenhouse gases (GHG) such as nitrogen oxides (NOx) and methane (CH4). This issue of e-News focuses on the relationship between building energy efficiency and CO2 emission reductions, methods for GHG accounting, and strategies for designing a net-zero carbon building.

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  • e-News #65: Saving Lives, Saving Energy
    June 25, 2009
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    Ongoing construction and major retrofitting of hospitals in California, driven by aging facilities and the demand for new medical technologies, offers an unprecedented opportunity to dramatically improve the energy performance of healthcare facilities for decades to come.

     

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  • e-News #64: Massive Buildings Yield Passive Savings
    April 21, 2009
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    Incorporating thermal mass into the design of a building is a completely passive way of reducing annual heating and cooling energy use and shifting the summer peak demand to later in the day. In architectural terms, thermal mass refers to the incorporation of solid or liquid materials into the building design to absorb heat or cold and then release it later to moderate building temperature swings.

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  • e-News #63: Analyze This!
    February 24, 2009
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    Energy and climate change challenges are driving more building owners and design teams of new commercial construction in California to explore ways to create very low-energy buildings. Meeting the energy use goals defined by Title 24 or groups such as Architecture 2030 will require bold steps from building owners and revolutionary thinking from design teams.

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  • e-News #62: How Low Can You Go?
    January 30, 2009
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    We simply must do everything in our power to slow down global warming before it's too late," said Gov. Arnold Schwarzenegger in September 2006, when he signed Assembly Bill 32, the California Global Warming Solutions Act of 2006. This landmark legislation, also known as the California Global Warming Solutions Act of 2006, requires the California Air Resources Board (CARB) to develop regulations and market mechanisms that will reduce California's greenhouse gas emissions to 1990 levels by 2020.

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  • e-News #61: Designing Commercial Buildings With Natural Ventilation
    December 11, 2008
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    With concerns about energy, climate change, and indoor environmental quality on the upswing, building designers are taking a closer look at natural ventilation opportunities in California's commercial new construction. To help designers evaluate whether natural ventilation makes sense for their projects, this issue of e-News reviews natural ventilation basics.

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  • e-News #60: LEED Web Portal, SBD and LEED Case Studies, Training Highlights
    March 1, 2007
    1 comments

    For a number of years, owners and designers of commercial buildings in California have turned to two programs-Energy Design Resources and Savings By Design-for information, design assistance and incentives to help them save money, reduce energy use and related carbon dioxide emissions, and improve the quality of their buildings.

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  • e-News #59: Optimizing HVAC Performance with CO²-Based Demand Controlled Ventilation
    February 1, 2007
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    In commercial buildings, the actual number of people within the building at any given time is frequently lower than the designed peak occupancy. If the building has a conventional HVAC system that delivers a fixed rate of outside air pegged to the peak occupancy, the result can be overventilation and a waste of energy and money.

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  • e-News #58: Lighting Automation Strategies for Commercial Buildings
    January 1, 2007
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    In decades past, electric lighting controls were usually nothing more complicated than manual switches that turned an individual light or a group of lights on and off. In certain situations today, such as small-scale buildings, warehouses supervised by a single building manager, and some private offices, this basic strategy may still be appropriate.

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  • e-News #57: Designing Office Buildings to Perform Better Than Title 24
    December 1, 2006
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    As designers and developers of new office buildings in California know, designing a building to meet the state's Energy Efficiency Building Standards isn't a goal-it's the law.

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  • e-News #56: Balancing Act: Designing Effective Commercial Kitchen Ventilation
    November 1, 2006
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    The kitchen ventilation system is one of the largest energy-consuming end uses of a commercial food service facility. In a typical restaurant, the HVAC (heating, ventilation and air conditioning) system represents 20 to 30 percent of total energy consumption. The kitchen ventilation system can account for up to 50 percent of that HVAC load.

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  • e-News #55: Back to School: Advanced Lighting Systems for Classrooms
    October 1, 2006
    1 comments

    Imagine the wide variety of learning activities that take place in a K-12 classroom. Now picture a lighting scenario designed to enhance the comfort and performance of students and teachers during each of those activities: Dimmed lighting while projectors or televisions are in use.  Glare free lighting for white boards and computer monitors. Uniform up lighting for general illumination. Down lighting for reading tasks.  Lighting controls that are a breeze for the teacher to use.

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  • e-News #54: High-Performance Glazing
    March 1, 2006
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    These days commercial building designers can choose from an exciting array of high-performance glazing products. But with so many options available, selecting the right glazing for any given application is more complicated than ever.

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  • e-News #53: Life-Cycle Cost Analysis: Making Smart Decisions About Capital Improvements
    February 1, 2006
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    A classic challenge for building owners is whether and how much capital to invest in energy-saving equipment or systems in order to reap long-term savings.

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