TITLE

VFDs to the Rescue

AUTHOR(S)
Mazzoni, Steve
PUB. DATE
December 2006
SOURCE
Heating/Piping/Air Conditioning Engineering;Dec2006, Vol. 78 Issue 12, p17
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
The article discusses how variable-frequency drives (VFDs) helped the author in taking initial field readings on a chilled-water plant expansion project. To confirm head and flow rates met design criteria, they need to examine 16 pumps, which are all controlled by VFDs. He remembered that the VFDs allowed them to slow the pumps to match the pump curve and in some cases, helped confirm impeller size.
ACCESSION #
23540732

 

Related Articles

  • Improving Variable-Speed Pumping Control to Maximize Savings. Brogan, Alexandra; Gopalakrishnan, Vijay; Sturtevant, Kathleen; Valigosky, Zachary; Kissock, Kelly // ASHRAE Transactions;2016, Vol. 122 Issue 2, p141 

    According to some estimates, pumps account for between 10% and 20% of world electricity consumption (EERE 2001; Grundfos 2011). Unfortunately, about two-thirds of all pumps use up to 60% too much energy (Grundfos 2011), primarily because of inefficient flow control. Varying pump speed using a...

  • Variable-frequency Drives - Part 2. Pelikan, Bob // National Driller;Oct2009, Vol. 30 Issue 10, p30 

    The article presents the second part of the three-part series on variable-frequency drives (VFDs). It explores the basic concepts of use of VFDs. It cites the challenge faced by pumping system designers in meeting variable loads with a fixed-capacity pump. It also indicates the disadvantages of...

  • Energy drive. Carter, Colin // Engineer (00137758);4/10/2006, Vol. 293 Issue 7697, p49 

    The article discusses the need for the British industry to take full advantage of the energy savings being offered by variable speed drives. The effectiveness of using variable speed drives to power pumps or fans is being supported by the government's tax breaks offering. Variable speed drives...

  • Microprocessor-Controlled VFDs Avoid Unnecessary Shutdowns.  // Design News;10/21/91, Vol. 47 Issue 20, p123 

    The article focuses on the benefits of microprocessor-controlled variable frequency drives (VFD). VFD are reliable, energy efficient devices that can control motor speeds on process pumps and fans. It allows an ac motor to run at lower speeds when the load allows which reduces energy loss....

  • How to select a VFD. YOON, JOHN // Consulting-Specifying Engineer;Nov2010, Vol. 47 Issue 9, p30 

    The article offers guidelines surrounding the matching of variable frequency drives (VFD) and motors to fans and pumps in commercial building applications. It mentions that understanding how the VFD operates involves reviewing the basics of electric motors. It notes that to meet the load...

  • Making the Case for Variable-Speed Drives. Spitzer, David W. // Flow Control;Nov2011, Vol. 17 Issue 11, p12 

    The article presents the author's views on the concept of using variable-speed drives to throttle pumps and save energy, based on his experiences. The author states that variable-speed drive projects could be credibly presented for funding, after the ability to accurately calculate energy...

  • Issues related to the Adapting of Variable Operating Regime Pumping Plants by the use of Variable Speed Drives. Toma, Daniel // Ovidius University Annals, Series Civil Engineering;2012, Issue 14, p111 

    This paper describes some issues related to the opportunities for upgrading and modernizing a boost pumping station ("hydrophore") that is serving a district with high-rise apartment blocks. A topic of the discussion is focused on the implementation of variable speed pumps, by ensuring a control...

  • What drives choice in drives?  // Design Engineering;Jun2001, p22 

    Focuses on variable speed drives (VSD). Criteria in VSD selection; Comparison of AC, DC or servo drives; Control bandwidth; Areas of application; Lowest cost drive options.

  • Making drives meet the code. Petro, David // Machine Design;10/12/95, Vol. 67 Issue 18, p107 

    Offers tips on installing of variable-frequency drives (VFDs). Safety tips; Protecting VFDs; Feeder and ground-fault protection; Circuit breakers and switches; Branch short-circuit and ground-fault protection; Motor controllers; Motor overload protection. INSET: Underwriters Laboratories:...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics