Second Nature® low-temperature (SNLT2), secondary coolant refrigeration systems utilize CO2 as the heat transfer fluid. Since CO2 has excellent thermodynamic and transport properties, the CO2 secondary refrigerant removes heat from display cases and walk-in freezers via copper piping that is significantly smaller than what is typically required in traditional, direct expansion (DX) systems. And, since HFC refrigerant is confined to the primary system located in the machine room, the total refrigerant charge and the potential for leaks are greatly reduced. SNLT2 systems allow for significant reductions in the amounts of copper and HFC refrigerants required, providing sustainability benefits that will pay dividends throughout the life of the system.
Food Retail Display Cases
Hillphoenix supermarket food retail display cases are designed for maximum merchandising flexibility.
Easy product access and compelling aesthetics create a superior shopper experience where the food is the main focus. Behind the scenes, Hillphoenix supermarket merchandising display cases feature industry-leading, energy-efficient refrigeration and lighting technologies. From meat and seafood to prepared food destination centers, there’s a Hillphoenix case for every application.
SNLTX2 CO2 direct expansion, cascade refrigeration systems utilize CO2 as a low-temperature, direct expansion (DX) refrigerant in a cascade system. The CO2 removes heat from display cases and walk-in freezers via copper piping that is also significantly smaller than what is typically required in traditional HFC-based, direct expansion systems, and even smaller than in our SNLT2 secondary systems. The upper cascade (primary system) is a medium-temperature refrigeration system.
Second Nature glycol, medium-temperature (SNMT) refrigeration system is an advanced technology, pioneered by Hillphoenix®, that offers significant sustainability benefits when compared to conventional refrigeration technologies.
Second Nature medium-temperature secondary with CO2 low-temperature cascade system. Sharing a common, medium-temperature primary system, the SNMT2LX system combines a CO2 medium-temperature secondary system (SNMT2) with a CO2 low-temperature cascade system (SNLTX2) to further reduce refrigerant charge and consolidate duplicate components. Evaporator control uses Hillphoenix SmartValve™ technology with electronic expansion valves (EEV) on low-temperature and simple solenoid valve control on medium-temperature.