Laboratory and Field Testing of RTU Optimization Package Combining a Condenser-Air Pre-Cooler with Compressor Speed Reduction

Category: 
Commercial
Project Number: 
ET15SCE1250
Start Year: 
2015
End Year: 
2019
Markets Segments: 
Commercial
Project Type: 
Gas Energy Savings
Type of Technology: 
HVAC, Commercial
Organization: 
Southern California Edison (SCE)
Project Status: 
Completed
Savings Type: 
Work

This report describes a laboratory and field evaluation of a retrofit package to optimize the performance and efficiency of packaged air conditioning and heating Roof Top Units (RTUs). The package included Variable-Frequency Drive(s) (VFDs) to reduce the speed of the compressor(s) to 48 Hertz (Hz), and a condenser-air pre-cooler. This retrofit package is being considered as a method to save energy associated with air conditioning at all conditions, reduce peak electricity demand, and permanently reduce load on the compressor.

PDF Report: 
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