This product is a PDF that 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.

Recent regulations phasing out R-22 have changed the landscape of the HVAC&R field with respect to appropriate R-22 replacements refrigerants. Unfortunately, there is not a direct replacement for R-22 and the industry realizing that refrigerant blends must be utilized. These blends, when used as drop-in or near drop-in, exhibit a temperature glide that makes charging and servicing more challenging.

Fractionation and Temperature Glide: Why it Happens and How to Handle it
Robert W. Yost, Member
Product contains: Recorded Presentation Audio (mp3), Slides (pdf), Recorded Presentation (mp4)

Technology Issues Regarding Refrigerant Blends
Gustavo Pottker, Member
Product contains: Recorded Presentation Audio (mp3), Slides (pdf), Recorded Presentation (mp4)

Practical Differences in Working with Low and High Glide Blends and Implications for Retrofitting
Stephen Spletzer, Member
Product contains: Recorded Presentation Audio (mp3), Slides (pdf), Recorded Presentation (mp4)

Retrofit Experience with Alternative Refrigerant R-438A in R-22 Air-Conditioning and Refrigeration Systems
Stefanie Kopchick, Member, Curtis Lawson, Member
Product contains: Recorded Presentation Audio (mp3), Slides (pdf), Recorded Presentation (mp4)