
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.
The world-renowned professor, researcher and entrepreneur pioneered advances in CO2 and ammonia that have transformed the HVAC&R industry.
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.
The small-capacity prototype has the same efficiency as a comparable R448A unit.
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.