This pilot studied the energy and performance impacts of adding variable frequency drives (VFDs) to refrigeration system condenser fans in supermarkets.
Slipstream studied the impact of adding variable frequency drives (VFDs) to refrigeration system condenser fans in 23 condensers in four supermarkets. The pilot compared pre- and post-condenser fans retrofit with VFDs and provided energy and cost impacts in a TRM workpaper.
Results and Outcomes
Four supermarkets participated in the pilot, and savings estimates were developed based on the monitoring results. Full results can be found in the final project report, available upon request. Navigant conducted an impact evaluation in addition to Slipstream’s analysis. A TRM measure update was submitted based on these savings estimates. As next steps, the Emerging Technologies Team plans to work with the Standard Incentive and Small Business teams to consider a new incentive around this measure; there is not currently an incentive and this project was originally developed as a custom incentive concept.