HFO-Refrigerants, Global Warming, Refrigeration
New refrigerants with the positive attributes of both high thermal performance and low environmental impact are currently in development. These refrigerants provide high energy efficiency, which coupled with low GWP significantly reduce the total environmental impact compared with current fluids (R404A, R507, R22 and R134a). Properties, and experimental results are compared and discussed for refrigeration applications. Alternative system architectures for refrigeration applications utilizing the beneficial characteristics of these new fluids are also discussed. A holistic analysis approach is used to evaluate the lifetime environmental and operational impact for the refrigerants and systems presented in this study.