Hybrid Rooftop AC with Dual Evaporative Pre-Cooling Performance Evaluation

Category: 
Commercial
Project Number: 
ET13SCE7090 / ET13SCE7120
Start Year: 
2013
End Year: 
2015
Markets Segments: 
Commercial
Project Type: 
Electric Energy Savings
Type of Technology: 
Evaporative Cooling
Organization: 
Southern California Edison (SCE)
Project Status: 
Completed
Savings Type: 
Industry

This project gathered field data to demonstrate and understand the performance of a hybrid rooftop air conditioner that uses dual-evaporative pre-cooling, essentially a rooftop unit (RTU) that employs the technology used to define the Western Cooling Challenge. The technology is expected to save energy and demand two ways:

a) by cooling the outdoor air being delivered to the RTU indoor coil, and thereby reducing how much cooling it needs to perform, and

b) by reducing the air temperature seen by the RTU condenser coil, thereby decreasing refrigerant pressure and the work that needs to be done by the compressor.

PDF Report: 
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