Variable Frequency Drives Provide Comfort, Efficiency

Gonzalez, Steven
April 2007
Heating/Piping/Air Conditioning Engineering;Apr2007 Supplement, Vol. 79, p12
The article discusses the role of variable frequency drives (VFD) in providing improved comfort and energy efficiency in buildings. Building owners continue to evaluate their energy use while providing comfort to their occupants. Affinity laws in pumps and fans create a condition where power varies with the cube of the flow. According to the article, installing VFD on current heating ventilation air conditioning systems will reduce 50% of the flow but will only use 12.5% to 18% of full power.


Related Articles

  • Water treatment -- targeting the cause not the symptom. Wilkinson, Martin // Heating & Ventilating Review;Apr2014, Vol. 53 Issue 6, p26 

    The article reports on the role of water treatment in extending the life and improving the efficiency of a heating and ventilation system. Topics covered include maintenance of a balanced system with the efficient removal of dirt, improvement of the performance of the pumping machinery and...

  • Research on energy saving diagnosis of clean air conditioning system in pharmaceutical industry. Xin Li; Ruiying Jia; Runping Niu // Advanced Materials Research;2014, Vol. 977, p174 

    The purpose of building energy efficiency diagnosis was to find out the problems existing in the process of using energy and analysis the potential of energy saving to guide the owner who should improve the building energy efficiency as far as possible to reduce building energy consumption. This...

  • DOE Looks to Boost Efficiency Standard to 13 SEER.  // Air Conditioning, Heating & Refrigeration News;01/22/2001, Vol. 212 Issue 4, p1 

    Focuses on the administrative proposal for the increase of efficiency standard for central air conditioners and heat pumps in the United States. Approval for the publication of the increase in seasonal energy efficiency ratio; Opposition of the air conditioning and refrigeration industry...

  • CEE Revises Efficiency Initiative.  // Air Conditioning Heating & Refrigeration News;2/27/2012, Vol. 245 Issue 9, p4 

    The article reports on the release of revised energy initiative "High Efficiency Commercial Air Conditioning and Heat Pump Initiative" by the Consortium for Energy Efficiency (CEE).

  • Study of Unglazed Transpired Solar Collector Installations in the Twin Cities Minnesota Climate. Tebbe, Patrick A.; Moaveni, Saeed; Schwartzkopf, Louis; Dobmeier, Joseph; Gehrke, Joseph; Simones, Matthew // ASHRAE Transactions;2011, Vol. 117 Issue 1, p579 

    An unglazed transpired solar collector, sometimes called a solar wall or UTC, can be used to preheat ventilation air with incident solar energy. In this system a dark colored collector made of sheet metal absorbs solar energy, transfers it to outdoor air passing through its perforated surface,...

  • LEDs Are the New Black. Warren, Willard L. // Lighting Design & Application;Sep2011, Vol. 41 Issue 9, p12 

    The article discusses the growing popularity of light emitting diode (LED) as a replacement of fluorescents lights in the U.S. It cites the Department of Energy's (DEO) long term goal of achieving zero net energy (ZNE) buildings in the country, which encourages business companies and the...

  • Debate heats up over buildings energy performance gap.  // FM World;3/13/2014, Vol. 11 Issue 5, p09 

    The article discusses the highlights of the debate titled "The Performance Gap--Is There a Solution?" at the Ecobuild event held in 2014. Issues tackled include reduction of energy consumption, carbon emissions in buildings, and the setting of expectations and performance targets on energy and...

  • Energy Savings by Treating Buildings as Systems. Harvey, L. D. Danny // AIP Conference Proceedings;9/12/2008, Vol. 1044 Issue 1, p67 

    This paper reviews the opportunities for dramatically reducing energy use in buildings by treating buildings as systems, rather than focusing on device efficiencies. Systems-level considerations are relevant for the operation of heat pumps (where the temperatures at which heat or coldness are...

  • Energy Impacts of Chilled-Water-Piping Configuration. Hubbard, Roy S. // Heating/Piping/Air Conditioning Engineering;Nov2011, Vol. 83 Issue 11, p20 

    The article discusses the energy consumption of chilled-water-piping configurations, as well as the properties of equipment-room space, control complexity, and installed cost. It mentions the three basic chilled-water-piping configurations which include constant primary flow (CPF), constant...


Read the Article


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

Try another library?
Sign out of this library

Other Topics