Dairy fan upgrades
The project included the installation of 67 high efficiency 72-inch ventilation fans for two dairy barns. The new fans replaced 92 existing fans and are expected to save the farm more than $42,600 a year in utility costs. The farm received $20,000 in incentives from AESAP for the project, giving it a payback period of just over 4 years. The additional project cost was financed through PG&E’s On-Bill Financing 0% interest loan program.
Dairy fan variable frequency drive (VFD) upgrades
The variable speeds and temperature sensors on the new fans allow them to operate at lower speeds in warmer temperatures and higher speeds when the temperature rises. The older fans only had one speed meaning they operated at 100% whether it was 70 degrees or 90 degrees. In addition to the enhanced features on the new fans, they are more efficient than the fans they replaced meaning that even when they are operating at 100%, they are using less energy than the previous fans.