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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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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.
Multi-Temperature R744 Refrigerated Container Performs Well in High Temperatures
Test shows that enhanced R744 technology can compete with traditional single-temperature R404A container up to 50°C.
Making the Business Case Remains Key Factor for Success of R744
Professor Pega Hrnjak highlighted cost effectiveness and availability of components as key challenges for the CO2 industry during GL2020.
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.