Structural Concepts migrated its refrigerated food displays from fixed-speed compressors using HFO refrigerants (R449A and R513A) to Embraco UFMFT condensing units with dual voltage variable-speed compressors, using R290 natural refrigerant. This transition was monitored in two applications to compare the new setup with the previous configuration:
Additionally, a horizontal display case (1.20 x 2.40 meters) with two refrigeration circuits using R290 and variable-speed compressors demonstrated a 12% energy saving after installing the new Embraco Sync Controller.
The Embraco Sync is part of the Sync it All portfolio, which includes the Embraco AIR fan, the YouControl development interface, and Embraco variable-speed compressors. Johari Gregorio, Nidec Global Appliance’s Application Engineer for North America, explained that the new controller enhances energy efficiency and temperature stability by synchronizing with two Embraco variable-speed compressors.
This transition simplified Structural Concepts’ manufacturing process, reducing the number of compressor models from 38 to just two Embraco condensing unit models. Rob Dody, Structural’s Senior Engineering Manager, highlighted the benefits of the compact UFMFT model, which fits all cabinets, provides more display space, and has an effective drain pan system.
The transition also ensures compliance with upcoming regulatory standards. The U.S. Environmental Protection Agency (EPA) will limit the Global Warming Potential (GWP) of commercial food refrigeration equipment to 150 starting January 2025. Structural Concepts is already compliant with these regulations and prepared for future Department of Energy regulations.
The overall portfolio migration is estimated to reduce Structural Concepts’ TEWI by 33% on average, significantly lowering CO2 emissions. Rob Dody noted that migrating to variable-speed technology and natural refrigerant has enabled Structural Concepts to offer more efficient and environmentally sustainable products that align with customer expectations and market demands.
Johari Gregorio emphasized that buying the complete condensing unit ready to install into applications saves manufacturers time and effort, allowing them to focus on their core business. This approach benefits refrigeration equipment manufacturers for food retail, such as Structural Concepts.
The collaboration between Embraco and Structural Concepts represents a significant step towards sustainable refrigeration solutions, offering substantial energy savings and environmental benefits.