Synchronous and Cogged Fan Belt Performance Assessment

Dylan Cutler, Jesse Dean

Research output: NRELTechnical Report


The GSA Regional GPG Team commissioned the National Renewable Energy Laboratory (NREL) to perform monitoring of cogged V-belts and synchronous belts on both a constant volume and a variable air volume fan at the Byron G. Rodgers Federal Building and U.S. Courthouse in Denver, Colorado. These motor/fan combinations were tested with their original, standard V-belts (appropriately tensioned by anoperation and maintenance professional) to obtain a baseline for standard operation. They were then switched to the cogged V-belts, and finally to synchronous belts. The power consumption by the motor was normalized for both fan speed and air density changes. This was necessary to ensure that the power readings were not influenced by a change in rotational fan speed or by the power required topush denser air. Finally, energy savings and operation and maintenance savings were compiled into an economic life-cycle cost analysis of the different belt options.
Original languageAmerican English
Number of pages39
StatePublished - 2014

Bibliographical note

This report was funded by the U.S. General Services Administration [and the Federal Energy Management Program of the U.S. Department of Energy] under Contract No. IAG-11-01815 and Task No. WFK91002

NREL Publication Number

  • NREL/TP-7A40-61448


  • Byron G. Rodgers federal building
  • cogged belts
  • GSA
  • motors
  • synchronous belts
  • U.S. General Services Administration


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