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The seminar addresses low-GWP alternative refrigerants and their applications. As regulations and legislation become increasingly more widespread and restrictive, the HVAC&R industry will need to identify viable alternatives for existing refrigerant solutions. This environmentally-driven change is different than past ones since additional constraints are being placed on refrigerants in essence reducing the number of viable single-component solutions. The seminar highlights five papers appearing in ASHRAE’s Science and Technology for the Built Environment November 2016 edition (one dedicated specifically to low-GWP refrigerants.) The presentations focus on low-GWP halocarbon refrigerants containing unsaturated carbon bonds during boiling heat transfer and in system applications.

• Insights into the Next Generation HVAC&R Refrigerant Future
  Stephen Kujak, Member, Trane, Ingersoll Rand, La Crosse, WI
  
• Model Validations for Low-GWP Refrigerants in Mini-Split Air-Conditioning Units
  Omar Abdelaziz, Ph.D., Member1 and Bo Shen, Ph.D., Member1, (1)Oak Ridge National Laboratory, Oak Ridge, TN
  
• Experimental Evaluation and Field Trial of Low GWP R404A Replacements for Commercial Refrigeration
  Ankit Sethi, Associate Member1 and Michael Petersen, Associate Member2, (1)Honeywell International, Buffalo, NY, (2)Creative Thermal Solutions, Inc., Urbana, IL
  
• Horizontal Convective Boiling of R448A, R449A and R452B within a Micro-Fin Tube
  Mark A. Kedzierski, Ph.D., Member, National Institute of Standards and Technology, Gaithersburg, MD
  

Run Time: 90 mins.