Wire-to-Shaft Efficiency

Rishel, James B.
July 2010
ASHRAE Journal;Jul2010, Vol. 52 Issue 7, p100
Academic Journal
The article discusses the process of the efficiency of a variable speed drive and motor which is imparted to the shaft to the energy supplied to the switchgear for the motor. The variable frequency drives determine the constant speed pump of the combined motor and drive with a design of total dynamic head. Thus, the wire-to-shaft efficiency curve provide variable speed motors in driving speed motors, pumps, fans and compressors.


Related Articles

  • Upping the efficiency of pumps and fans. Theisen, Jeff; Korane, Kenneth // Machine Design;10/6/2005, Vol. 77 Issue 19, p86 

    Focuses on the use of variable-speed drives (VSD) to control industrial energy consumption of fans and pumps. Comparison between energy consumption of using outlet dampers and VSD to control airflow of fans; Computation of horsepower required for variable-speed operations; Benefit of...

  • Fixed pump delivers variable output.  // Hydraulics & Pneumatics;Dec2008, Vol. 61 Issue 12, p12 

    The article discusses the advantages in using variable-displacement pumps in the hydraulic power units (HPUs) for industrial systems. It states that using variable-displacement pumps can save energy when the machine could be to use a fixed-displacement pump driven by a variable-speed electric...

  • VFDs for Chiller Auxiliaries. Dieckmann, John; Brodrick, James // ASHRAE Journal;Jul2010, Vol. 52 Issue 7, p96 

    The article discusses the integration of variable speed drives (VFD) for compressor motors of chillers and blowers in air-conditioning for commercial buildings. The auxiliary energy is used to determine the impact of system energy use in the circulation of pump, condenser water pump and cooling...

  • Electricity: A cost you can control. McFarland, John A.; Reitz, Victoria // Machine Design;10/25/2001, Vol. 73 Issue 20, p138 

    Gives advice how companies can control electricity consumption. Tips on selecting industrial motors; Advantages of adjustable-speed drives; Account of a related study.

  • Variable drives cut down motor use. Sullivan, C.C. // Energy User News;Aug98, Vol. 23 Issue 8, p1 

    Reports that motor energy which is drawn throughout facility systems can be cut down by premium-efficiency motors, variable-frequency drives (VFDs) and adjustable-speed drives (ASDs), which being used by facilities around the United States. What are ASDs and VFDs; Requirements of ASDs and VFDs;...

  • Towards a new age of efficiency. Crichton, Katherine // Manufacturers' Monthly;Mar2009, p41 

    The article reports on the factors that will help manufacturers and customers reduce energy consumption of variable speed compressed air systems. These include the utilization of variable speed drives (VSDs), installing on/off load compressors and implementation of multi stage compressors. It...

  • 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...

  • Variable speed drives cut compressor energy costs. Prator, David; Foszcz, Joseph L. // Plant Engineering;Oct98, Vol. 52 Issue 11, p52 

    Provides information on the use of variable speed drive (VSD) compressor regulation systems aimed at reducing compressed air energy consumption by 2010. Establishment of energy conservation policies by the United States government through the Compressed Air Challenge; Impact which energy...

  • AC Drives Put HANDLE ON RIZING GAS PRICES. Manley, David // Energy & Power Management;Mar2006, Vol. 31 Issue 3, p18 

    The article discusses solution on how manufacturers can reduce the amount of energy used on manufacturing processes. One solution is the use of variable-speed drive. It reduces fan speed which also reduces the power requirement. The variable speed method achieves flow control that matches the...


Read the Article


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

Try another library?
Sign out of this library

Other Topics