System Differences

August 2009
Heating/Piping/Air Conditioning Engineering;Aug2009, Vol. 81 Issue 8, p20
The article focuses on the American Society of Heating, Refrigerating, and Air-Conditioning Engineers "single-duct" variable-air-volume (VAV) system as an illustration of the system differences where it is the most often encountered form of VAV. It states that it comprises a single air handling unit (AHU) with a variable-speed fan that brings air to a number of cooling-only VAV terminal units. It notes that the system has the possibility to be a great energy saver.


Related Articles

  • Research Validates VAV. INT-HOUT, DAN // ASHRAE Journal;Aug2013, Vol. 55 Issue 8, p96 

    The article discusses the findings of a study on variable air volume (VAV) terminals in buildings by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) in Northern California. The study investigated how various settings of VAV terminals impact occupant...

  • The Deal About Duct Lining. INT-HOUT, DAN // ASHRAE Journal;May2014, Vol. 56 Issue 5, p98 

    The article discusses fiberglass duct lining for thermal insulation and sound reduction in buildings, need for duct insulation to pass rigid duct erosion test standards, and American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE) Standard 62.1-2013. It discusses mold...

  • Efficient Science Building. Lawless, Mike J. // ASHRAE Journal;Oct2012, Vol. 54 Issue 10, p46 

    The article presents a 2012 American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Technology Award Case Study involving a science addition at the University of Wisconsin-Stout (UW-Stout). It notes that the original Jarvis Hall, built in 1970 was completely modernized...

  • Increasing Efficiency With VAV System Static Pressure Setpoint Reset. Taylor, Steven T. // ASHRAE Journal;Jun2007, Vol. 49 Issue 6, p24 

    The article focuses on the energy benefits of static pressure setpoint resets in supply air fans on variable air volume (VAV) systems. The article states that American Society of Heating, Refrigerating & Air Conditioning Engineers Standard 90.1 requires that systems with direct digital control...

  • COMPLETED RESEARCH.  // ASHRAE Journal;Aug2013 Ashrae Insights, p5 

    The article reports on the availability of the final of several research projects available for free to members of the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). These include research on variable air volume systems with direct digital controllers,...

  • VAV Box Duct Design. TAYLOR, STEVEN T. // ASHRAE Journal;Jul2015, Vol. 57 Issue 7, p32 

    The article reports on Variable Air Volume box inlet and outlet duct design options including their impact on first costs and pressure drop. Topics include the focus on single duct VAV reheat systems with most of the principles applicable to other VAV system variations, San Francisco Bay Area...

  • EFFICIENCY IN THE ROUND. Smithart, Eugene // Engineered Systems;Oct2015, Vol. 32 Issue 10, p42 

    The article shares guidelines from the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) for spiral round ductwork for variable air volume(VAV) systems. It explains how static regain duct design works using Bernoulli's principle and the need to consider installed...

  • VAV Terminal Units: Looking Back, Ahead. INT-HOUT, DAN; FARIS, GUS // ASHRAE Journal;Oct2015, Vol. 57 Issue 10, p40 

    The article discusses the use of variable air volume (VAV) terminal units in commercial office buildings in the U.S. Topics covered include the evolution of commercial air conditioning system in the U.S., importance of pressure independent control to VAV systems, and the introduction of...

  • BACnet on duty: New BAS frontiers for end users. Gahran, Amy // Energy User News;Mar1998, Vol. 23 Issue 3, p16 

    Presents information on the BACnet standard protocol for building automated systems which the American Society of Heating, Refrigeration, and Air Conditioning Engineers approved to broaden the communication and interoperation between different vendors' control devices. Comments from Martin...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics