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Scroll chiller uses HFO1234ze for the first time

SPAIN: Andalusian manufacturer Keyter is to use Honeywell’s HFO refrigerant R1234ze in a commercial scroll chiller for the first time.

Keyter’s new Helvetia scroll chiller employs the new Danfoss DSG scroll compressors, which have been optimised for use with the low GWP HFO refrigerant. 

For the first time, the DSG compressors allow a medium pressure fluid like R1234ze to be used in a high pressure chiller without compromising the performance. The adoption of these scroll compressors in Keyter’s product range increases is said to increase energy efficiency when compared to models utilising R410A or R454B, while also offering the same cooling capacity. 

These compressors are also available with high temperature models, making them a viable choice for heating applications.

“As an Andalusian-based organisation, we are located in one of the hottest areas of Europe, which enables us to test our machines under extreme circumstances,” said Keyter’s sales and marketing director Francisco Raya. “Honeywell’s Solstice ze technology surpassed performance expectations and its environmental benefits align with global requirements and our mission to preserve the planet, making it the ideal solution,”

Additionally, Keyter is developing a new range of air-cooled heat pumps with Solstice ze refrigerant addressing reversible systems for dedicated heating applications. Solstice ze supports this new generation model to reach higher condensing temperatures, enabling high-temperature water production of up to 90°C, while existing models only achieve water temperatures of 55°C–65°C due to their relatively low condensing temperatures.


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