HVAC Design

A building's heating, ventilation, and air conditioning system (HVAC) creates interior comfort by compensating for climatic conditions. Many efficient HVAC system design options exist than those used in current practice and must be explored by designers pursuing high performance buildings.


  • e-News #71: Evaporative Cooling: Saving Energy in More Ways Than Ever
    March 31, 2010
    1 comments

    Evaporative coolers provide cool air by forcing hot dry air over a wetted pad. The water in the pad evaporates, removing heat from the air while adding moisture. Although the concept has been used in residential "swamp" coolers in the Southwest for decades, technology advances have made evaporative cooling a viable alternative to conventional cooling in commercial buildings and in other areas of the country.

    read more...


  • Design Guidelines: Advanced Simulation Guidebook, Volume II
    February 23, 2010
    1 comments

    This second volume of the Advanced Simulation Guidebook series is intended to teach readers about the high performance building process for commercial new construction. The goal of the high performance building process is to create buildings that meet owner and occupant needs in terms of energy efficiency, thermal comfort, and other sustainability areas-and do so in a way that reduces the necessary design effort and construction cost impact.

    read more...


  • e-News #69: Chilled Beams
    February 2, 2010
    1 comments

    Chilled beams are among the recent energy-saving innovations making their way to the U.S. market. Chilled beam technology, which involves locating a low-temperature radiator at ceiling level to cool the rising warm air, has been utilized in Europe and Australia for more than a decade. Once cooled, the air slowly descends into the occupied zone, providing adequate cooling with minimal air movement and fan power, while providing an unobstructed radiant heat sink above the occupied zone.

    read more...


  • Design Brief: Energy Efficiency Practices in Industrial Refrigeration
    January 12, 2010
    1 comments

    Energy costs are a significant expense for facilities that operate industrial refrigeration systems. In new construction projects, significant energy savings can be achieved by incorporating energy efficiency technologies in the project design. For facilities being expanded or upgraded, ensuring the efficiency of the refrigeration systems can lead to significant energy savings without compromising productivity.

    read more...


  • e-News #68: Guestroom Controls for the Hospitality Sector
    January 11, 2010
    1 comments

    San Francisco's Orchard Garden Hotel was San Francisco's first hotel to implement a cardkey system to control lights and HVAC systems in guestrooms. Monitored data from four rooms in the hotel showed a reduction in heating and cooling energy of 45% during the peak cooling season. Computer simulations based on monitored occupancy levels in the hotel estimate a savings of 32% of annual heating and cooling costs. Modeled across five different climate zones, the average savings were 26%.

    read more...


  • Design Guidelines: CoolTools Chilled Water Plant
    December 28, 2009
    1 comments

    Many large buildings, campuses, and other facilities have plants that make chilled water and distribute it to air handling units and other cooling equipment. The design operation and maintenance of these chilled water plants has a very large impact on building energy use and energy operating cost.

    read more...


  • Design Guidelines: EDR Multifamily Design Guide for Energy Efficiency
    November 19, 2009
    1 comments

    The Multifamily Design Guide For Energy Efficiency provides a summary of resources, methods, and tools to assist the design community in building more energy efficient multifamily buildings, which are increasingly popular in California.

    read more...


  • 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.

    read more...


  • 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.

    read more...


  • Design Brief: Demand-Controlled Ventilation
    June 12, 2009

    Demand-controlled ventilation (DCV) is a control strategy that varies the amount of ventilation outside air delivered to a space based on input from a single carbon dioxide (CO2) sensor or group of sensors.

    read more...


  • Case Studies: Tahoe Center for Environmental Sciences
    June 12, 2009
    1 comments

    The Tahoe Center for Environmental Sciences (TCES) is a three-story, 45,000 ft2 building on Sierra Nevada College's Lake Campus that demonstrates how an ambitious project team can successfully reduce energy usage by implementing a variety of innovative mechanical designs at minimal additional first cost.

    read more...


  • Design Brief: Energy Management Systems
    May 1, 2006
    1 comments

    On average, energy management systems save about 10 percent of overall annual building energy consumption. An energy management system (EMS) is a computer that controls the operation of all major building systems, in order to run the building efficiently and effectively. An EMS can reduce a building's overall energy use by about 10 percent.

    read more...


  • Design Brief: Integrated Design for Small Commercial HVAC
    November 1, 2003
    1 comments

    By using recommended design methods for rooftop heating, ventilation, and air conditioning (HVAC) systems, significant improvements in operational savings, energy efficiency, and indoor comfort can be achieved.

    read more...


  • Design Brief: Underfloor Air Distribution and Access Floors
    October 1, 2003
    1 comments

    Underfloor air distribution and access floor systems can provide energy savings, improved indoor air quality, and a technology ready environment for today's commercial buildings.

    read more...


« previous   1  2