Refrigerants, Global Warming, Commercial Refrigeration, Glide
New refrigerants with the positive attributes of both high thermal performance and low environmental impact are currently in development. Initial evaluation of these refrigerants in refrigeration systems show good energy efficiency and significant lower global warming impact than current refrigerants. Some of those Low GWP refrigerants are non-azeotropic blends with moderate to high glide; therefore guidance on the use of these blends is needed to achieve the desired good performance and low environmental impact. This study discusses glide effects on the performance and operation of refrigeration systems. Issues related to servicing systems such as fractionation are also discussed. Data is presented using current refrigerants such as R407F and other refrigerant blends currently under development.