Comprehensive Assessment of Centrifugal Chillers Using Next Generation Refrigerant R-1233zd(E) (OR-16-C016)

Global pressure to control climate change is driving the development of new regulatory policies that restrict and/or lower the direct GWP impact of fluorocarbons (or F-gases). These demands have resulted in researching a whole new class of fluorocarbons called unsaturated fluorocarbons or commonly referred to as hydrofluoroolefins (HFOs).  This paper provides an overall assessment of the application of the new HFO refrigerant R-1233zd(E) in stationary HVAC chillers. The presentation also reviews thermodynamic cycle performance and heat transfer characteristics relative to R-123, R-245fa and R-134a in a centrifugal chiller application.