East Coast Wild Blueberry Project: Refrigeration for a Blueberry Processing Plant
Zero-C was tasked with relocating an existing CO2 refrigeration system, integrating an expanded freezing tunnel, adding refrigerated production zones, and a frozen storage warehouse, while seeking solutions to improve the system’s energy efficiency. The goal was to maximize capacity while reducing operating costs and ensuring optimal conditions for storage and production.
Zero-C designed two CO2 compressor racks, with one specifically dedicated to the freezing tunnel. The tunnel was reconfigured to operate at -25°F instead of -40°F, reducing compressor energy consumption by optimizing their compression ratio. Additionally, a geothermal system was integrated to subcool the refrigerant after heat rejection, enhancing the overall efficiency of the system. In the frozen storage warehouse, evaporators with EC motors were installed to adjust fan speeds based on ambient temperature, further optimizing electricity consumption.
- Increased refrigeration capacity and reduced compressor energy consumption.
- Successful integration of the geothermal system for refrigerant subcooling.
- Energy performance optimization with EC motor evaporators adjusting their consumption based on temperature.
- Stable and flexible system performance, meeting the plant’s production needs.
d’autosuffisance énergétique pour le chauffage et l’approvisionnement en eau chaude.
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de rentabilité accrue grâce à l’efficacité du système.
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d’amélioration de la performance du système de réfrigération.
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Spécifications du projet
Expertise: CO2 refrigeration, energy optimization, geothermal, freezing systems.
Project Specifications:
- CO2 refrigeration system with two compressor racks
- Freezing tunnel reconfigured to -25°F
Geothermal system to subcool the refrigerant - Evaporators with EC motors adjusting fan speeds based on ambient temperature
- Capacity: 1775 HP, 516 TR (DX + pumped)
Location: Glenholme (Nova Scotia), Canada
Équipements installés
- CO2 refrigeration system (R744) with 1775 HP for compressors
- Geothermal system for refrigerant subcooling
- Evaporators with EC motors adjusting fan speeds based on ambient temperature
