ATMO Europe – Zudek’s Low-Charge Ammonia Chiller at Pharmaceutical Site Is 20% More Efficient Than HFC Alternative


Italian manufacturer Zudek’s air-cooled, low-charge ammonia/NH3 (R717) chiller has improved the energy efficiency ratio (EER) of a cooling system at a pharmaceutical site in Belgium, by 20%, compared to its previous HFC-based unit.

The Airmatik chiller, which contains 100kg (220lbs) of ammonia, has an EER of 3.6 at an ambient temperature of 40°C (104°F).

Details of the project were shared by Jakob Terčon, Business Development Manager at Zudek, and Sarah Van Erdeweghe, Energy Efficiency Engineer at HVAC contractor Equans, during their presentation in a refrigeration session at the ATMOsphere (ATMO) Europe Summit on natural refrigerants. The conference took place November 15–16 in Brussels and was organized by ATMOsphere, publisher of

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