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Gursaran D. Mathur, Ph.D., P.E. Fellow SAE, ASHRAE, ASME Technical Specialist, Climate Control

Gursaran D. Mathur, Ph.D., P.E. Fellow SAE, ASHRAE, ASME Technical Specialist, Climate Control Sr. Manager, Test & Development Calsonic/Nissan North America Farmington Hills, MI, USA United Nation’s HFC Management Workshop and 35 th OEWG Bangkok, Thailand April 21 st , 2015.

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Gursaran D. Mathur, Ph.D., P.E. Fellow SAE, ASHRAE, ASME Technical Specialist, Climate Control

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  1. Gursaran D. Mathur, Ph.D., P.E. Fellow SAE, ASHRAE, ASME Technical Specialist, Climate Control Sr. Manager, Test & Development Calsonic/Nissan North America Farmington Hills, MI, USA United Nation’s HFC Management Workshop and 35th OEWG Bangkok, Thailand April 21st, 2015 Summary of Session 3:Challenges and Opportunities in Addressing High GWP HFC in Mobile Air Conditioning

  2. Overall Summary

  3. Current Situation Overall Summary • One global refrigerant (HFC-134a) – a very unique situation for MAC industry • MAC sector is only one sector in the world that has been regulated! • This sector started the phase-out of HFC-134a (GWP of 1460) much earlier than other sectors • MAC sector represents approximately 20% of the total global usage of HFC-134a • A number of low GWP refrigerants suitable for MAC systems have been investigated by this sector

  4. Current Situation Overall Summary • Some of the refrigerants investigated are: HFO-1234yf; R-744 (CO2); R445A; R-152a; R-290; R600a; etc. • Refrigerants evaluated for heat pump systems for HEVs and EVs • Some refrigerants are better suited for heat pump application • HFO-1234yf with a GWP of 4 seems to be the winner at this time • Approximately 3 million vehicles with HFO-1234yf have been produced until the end of 2014

  5. Next Steps Overall Summary • Still various options available on hand • We have many challenges as we have many barriers for selection a refrigerant: • Safety issues – Code & Regulations • Energy Efficiency • Cost • Applicability at high ambient condition • Technician training and certification • We all need to work together to ensure we have one global solution for our industry for reducing CO2 emissions!! Thank you!!

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