Improve Fan Belt Efficiency

Measure Details

Display NameImprove Fan Belt Efficiency
Language Ruby
Tags HVAC.Distribution
DescriptionThe assessment team observed opportunities for fan belt improvements on HVAC fan drives. These motors are asynchronous induction motors. Improvements in belt efficiency result in energy savings at the motor. The three common belt efficiency measures are belt tightening (1%-5% savings per motor), replace standard v-belts with cogged v-belts (2% savings per motor), and replace standard belts with synchronous belts (3% savings per motor). Well-adjusted belts run cooler, last longer, and operate at higher efficiency than standard belts. The belts associated with the largest motors, longest run times, and that are run closest to full load should be given priority when making replacements.
Modeler's DescriptionThis measure alters fans on all or a single air loop in the building. The three belt ECMs options are then exposed as three user argument fields with a default populated for each. The range of efficiency improvements will be listed in the user argument description. The three user arguments will be summed and added to the existing motor efficiency. The cost arguments are user arguments that are also populated with a default. If arguments are left blank, the user is notified that the model has not changed in the run manager. A warning is issued if the motor efficiency >96% and an error is issued if efficiency is >100%.
Measure TypeModelMeasure
Uses SketchUp APIfalse
OpenStudio Version2.0.0
Minimum Compatible OpenStudio Version2.0.0
GitHub RepoNREL/openstudio-ee-gem


Version ID GitHub Release Tag OpenStudio Version Min Compatible Version Max Compatible Version Download Link
ebb40687-ed5b-4fe7-a6a8-45da30a3a895 v0.9.0 2.0.0 2.0.0 Download v0.9.0
ebb40687-ed5b-4fe7-a6a8-45da30a3a895 v0.8.0 2.0.0 2.0.0 Download v0.8.0
c458d99c-98a3-43d0-8eed-0bc348f4c78c v0.6.0 2.0.0 2.0.0 Download v0.6.0
94962475-cabc-434f-ae65-ef81505ad287 v0.5.0 2.0.0 2.0.0 Download v0.5.0
3a76e922-3b73-464c-bd84-36ec1413808c v0.1 2.0.0 2.0.0 Download v0.1