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This product contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.

This session investigates the energy efficiency of several alternative Low Global Warming Potential refrigerant blends. The presentations address the thermodynamics of the blends, including the associated temperature glide in the heat exchangers. They also focus on the types of application whether the blend is intended for drop-in or near drop-in service or whether intensive changes are required to capture the best performance. Comparisons from the recent AHRI alternative refrigerants program are also presented to show the most recent developments and state of the art.

  • The Thermodynamic Efficiency of Refrigerants: a History of a Downhill Slide?
    Kenneth Schultz, Ph.D., Member
  • A Total System Analysis of Air and Water Cooled Lower GWP Refrigerants

    Richard Lord, Fellow ASHRAE
  • Low GWP (A2L) Refrigerant Evaluation on a 10-Ton Rooftop Air-Conditioner

    Matthew Clark, Associate Member

  • Evaluation of a Lower GWP Refrigerant Option for R404A in Commercial Refrigeration Applications

    Brian Fricke, Ph.D., Member

Run Time: 90 mins

Citation: ASHRAE Seminar Recordings, 2016 Annual Conference, St. Louis, Mo