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.
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| published Sunday, June 13, 2010 |
7187 Views :: 2 Comments
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to install and more complicated to operate, a chiller plant offers a number of benefits over simple packaged cooling units, including greater energy efficiency, better controllability, and longer life.
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| published Thursday, May 13, 2010 |
9659 Views :: 5 Comments
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(Design Guide) is written for Heating, Ventilation, and Air-Conditioning (HVAC) designers and focuses on built-up VAV systems in multi-story commercial office buildings in California.
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| published Thursday, May 13, 2010 |
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approach to building design, designers around the world have succeeded at creating highly efficient air-conditioning systems that provide excellent workspace comfort.
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| published Thursday, May 13, 2010 |
5744 Views :: 0 Comments
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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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| published Thursday, April 29, 2010 |
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System Design Brief provides recommendations to help
engineers improve the efficiency of large HVAC systems. It focuses on
built-up variable-air-volume (VAV) systems in multistory office
buildings.
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| published Wednesday, March 31, 2010 |
2403 Views :: 2 Comments
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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.
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| published Tuesday, February 02, 2010 |
3763 Views :: 1 Comments
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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.
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| published Tuesday, January 12, 2010 |
2856 Views :: 0 Comments
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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.
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| published Monday, January 11, 2010 |
3733 Views :: 0 Comments
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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%.
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| published Monday, December 28, 2009 |
3403 Views :: 3 Comments
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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.
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| published Thursday, November 19, 2009 |
2624 Views :: 0 Comments
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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.
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| published Monday, October 26, 2009 |
2813 Views :: 1 Comments
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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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| published Friday, October 09, 2009 |
3520 Views :: 0 Comments
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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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| published Friday, June 12, 2009 |
5241 Views :: 0 Comments
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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.
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| published Friday, June 12, 2009 |
4515 Views :: 2 Comments
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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.
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| published Thursday, December 04, 2008 |
8180 Views :: 0 Comments
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that encourages customers to reduce or shift their electric power usages under certain conditions to help utilities to overcome temporary constraints in the electricity supply.
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| published Tuesday, June 28, 2005 |
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Guidelines are comprised of the following documents:
- Underfloor Air Distribution
- Energy Efficient Chillers
- Advanced Control Sequences
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| published Sunday, November 02, 2003 |
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design methods for rooftop heating, ventilation, and air conditioning (HVAC) systems, significant improvements in operational savings, energy efficiency, and indoor comfort can be achieved.
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| published Thursday, October 02, 2003 |
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and access floor systems can provide energy savings, improved indoor air quality, and a technology ready environment for today’s commercial buildings.
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| published Friday, May 02, 2003 |
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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.
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| published Saturday, November 02, 2002 |
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improved IAQ, cooling energy savings, and better acoustics for high performance buildings.
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