Fan Variable Frequency Drive (VFD)
The RTF has contracted with SBW Consulting to develop the final standard protocol and calculator for fan variable frequency drive (VFD) for estimating fan energy savings. The standard protocol is being developed under the requirements of the current Guidelines for RTF Savings Estimation Methods, Release 6-1-11.
Current Activities:
December 16, 2011 - The fan VFD protocol has been updated from the first draft version presented to the RTF in June 2011. The calculator specifications have been developed and reviewed by the Subcommittee on December 16. The Excel file of the calculator is not operational and is for specifications and user interface review.
Reference Documents:
Simplified M&V Fan VFD Protocol (70k Word)
Simplified M&V Fan VFD Calculator Specification (60k Word)
BPA Review of RTF Fan Tool 12-16-11 (30k Word)
Draft Fan VFD Calculator
RTFVFDCalcSpec_v2-2.1 (5mb Excel)