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Pega Hrnjak
September 1, 2022 Commercial refrigeration North America

Pega Hrnjak, Natural Refrigerants Visionary, Passes Away

The world-renowned professor, researcher and entrepreneur pioneered advances in CO2 and ammonia that have transformed the HVAC&R industry.

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Stefan Elbel of CTS sharing CO2 innovations at ATMO America 2022.
August 16, 2022 Commercial refrigeration North America Transport refrigeration

ATMO America: CTS Research Firm Shows Versatility of CO2

From bottle coolers to refrigerated containers and even mobile air-conditioning, functional CO2 prototypes show the potential for widespread replacement of HFC systems without compromising on cost or efficiency.

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CTS CO2 condensing unit final
March 21, 2022 Commercial refrigeration North America

U.S. Research Firm CTS Develops Efficient, Low-Cost CO2 Condensing Unit

The small-capacity prototype has the same efficiency as a comparable R448A unit.

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Pega for B2B
July 19, 2019 Air conditioning World

A conversation with Professor Pega

Refrigeration legend Pega Hrnjak of the University of Illinois at Urbana-Champaign talks about the state of the natural refrigerants industry and some of his latest projects.

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