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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.

Low global warming potential refrigerants are a recent topic of interest as the result of potential regulations limiting the use of existing refrigerants in many types of building equipment. Advantages and disadvantages of several proposed alternatives, including hydrocarbons, ammonia, and CO2 will be discussed along with test results in equipment and heat exchangers.

4-1 Evaluation of Alternative Refrigerant Performance in Air to Refrigerant Heat Exchangers
Omar Abdelaziz, Ph.D., Associate Member
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

4-2 Opportunities for Using Low GWP Refrigerants with Microchannel Heat Exchanger Technology
Chad Bowers, Ph.D., Associate Member
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

4-3 High Performance-Low Global Warming Potential Refrigerants in Heat Exchangers for Residential Air-Source Heat Pump Systems
Lorenzo Cremaschi, Ph.D., Member
This product contains: Recorded Presentation, Audio (mp3), Slides (pdf)

 

Citation: ASHRAE Seminar Recordings, 2013 Winter Conference, Dallas, TX.