Arneg’s R290 Condensing Unit Cools Multiple Display Cabinets
Rolando Bissot presenting at 2023 ATMO LATAM.

ATMO LATAM: Arneg’s R290 Condensing Unit Cools Multiple Plug-in Display Cabinets in Latin American Stores

An October installation of the units in a Mexico City convenience store serves five walls of refrigerated display cabinets.

Italian OEM Arneg, a global manufacturer of propane (R290) self-contained cabinets, chillers and heat pumps, can manage up to 12ft (3.75m) of plug-in refrigerated display cabinets with one external R290 condensing unit, dubbed Eco Ring.

Besides cooling the water/glycol circuit for the display cases, Eco Ring offers water-loop and air condensation for other store purposes.

Eco Ring product details and an installation in a Mexican convenience store were presented by Rolando Bissot, Engineering and Maintenance Manager at Arneg Central America, at the 2023 ATMOsphere LATAM.

The event ‒ hosted by ATMOsphere, publisher of Hydrocarbons21.com ‒ was held November 8‒9 in Mexico City.

“We can take a small modular chamber with a capacity around 30 kW [8.5TR] and add more units as needed to become a modular system,” Bissot said, indicating that one Eco Ring unit containing a propane condenser and a circulation pump can manage 12ft of equipment.

“Compared to a conventional plug-in system, Arneg Eco Ring uses only one removable unit [for] plug-in displays up to 3750 mm [12.3ft], [thereby] using less R290 gas,” the product’s webpage says. “This unique innovation frees up space and eliminates unnecessary equipment, making plug-in refrigerated displays more ecological and flexible.”

Bissot highlighted an October installation of the units in a Mexico City convenience store, with five walls of refrigerated display cabinets. The store opted to have both water-loop and air condensation.

No regrets with naturals

New natural refrigerant technologies are in the works to meet the growing trend of “proximity stores” and small sales areas, Bissot said. “There are great opportunities for energy savings when replacing older technologies.”

“One of the biggest challenges we have is the lack of knowledge of the risks and benefits of our natural refrigerant systems,” he said. “However, we have not had a customer do a project with a natural refrigerant and then revert to synthetics on the next project.”

“We will see exponential growth in applications using natural refrigerants as groups continue to implement these solutions on a massive scale,” Bissot predicted. “Latin America is a new market for these technologies, and we see it growing.”

Headquartered in Venice, Italy, Arneg operates 21 manufacturing facilities worldwide, with three factories in South America, including Rosario, Argentina; Andina, Colombia; and São Paolo, Brazil.

In addition to R290 equipment, the company manufactures transcritical, subcritical and pumped CO2 (R744) systems and ammonia (R717), ammonia/glycol and ammonia/CO2 systems.

In the South American region, Italian OEM Oscartielle, part of the Arneg Group, offers indoor/outdoor refrigerated lockers in either an R290 plug-in or a remote refrigeration system connection.

“We have not had a customer do a project with a natural refrigerant and then revert to synthetics on the next project.”

Rolando Bissot, Engineering and Maintenance Manager at Arneg Central America

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