Liquid-to-Refrigerant Heat Exchangers
ASHRAE Technical Committee 8.5

Meetings Information

Chicago Meeting, January 2018

Seminar 35 (Intermediate)
Low GWP Refrigerants in Heat Exchange Equipment: Part 1, Introduction and Case Studies
Track: Heat Exchange Equipment
Room/Time: Monroe, Tuesday, January 23, 2018, 8:00 AM - 9:30 AM
Sponsor: MTG.LowGWP Lower Global Warming Potential Alternative Refrigerants, 1.3 Heat Transfer and Fluid Flow, TCs 1.3, 3.1, 8.4, 8.5, 8.11, The American Society of Thermal and Fluids Engineers (ASTFE) and the U.S. National Committee of the International Institute of Refrigeration (IIR).
Chair: Lorenzo Cremaschi, Ph.D., Member, Auburn University, Auburn, AL

This session introduces the audience to heat transfer characteristics, energy performance, safety and trade-off aspects of the low GWP refrigerants used in heat exchange equipment of air conditioning and refrigeration systems. The speakers provide an overview of several case-studies with low GWP refrigerants and with natural refrigerants, and they discuss modeling, simulation and laboratory performance testing. Real world applications and performance under field type conditions are presented. This session provides the background information for the follow up forum panel discussion of Part 2 of this session.
1. Simulated Thermal Performance of Flooded Evaporators with R1234ze (and others) Vs. R134a with Oil Effects
John Thome, Ph.D., Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
2. Low Environmental Impact Refrigerants for Air-Conditioning, Chiller and Refrigeration Applications
Ankit Sethi, Associate Member, Honeywell International, Buffalo, NY
3. Recent Developments in Low GWP Refrigerants for Refrigeration and Air Conditioning
Joshua Hughes, Member, Chemours, Wilmington, DE
4. Comparative Analysis of Conventional Shell Side Ammonia Flooded Evaporator versus New Concept Direct Expansion Evaporator
Zahid Ayub, Ph.D., P.E., Fellow ASHRAE, Isotherm, Inc., Arlington, TX
5. Heat Exchanger Performance of Low GWP Refrigerants in Chillers
Kenneth Schultz, Ph.D., Member, Ingersoll Rand, La Crosse, WI
 
Debate 2 (Basic)
Low GWP Refrigerants in Heat Exchange Equipment
Track: Heat Exchange Equipment
Room/Time: Adams Tuesday, January 23, 20189:45 AM - 10:45 AM
Sponsor: MTG.LowGWP Lower Global Warming Potential Alternative Refrigerants, 1.3 Heat Transfer and Fluid Flow, TCs: 3.1, 8.4, 8.5, 8.11, The American Society of Thermal and Fluids Engineers (ASTFE), and the U.S. National Committee of the International Institute of Refrigeration (IIR).
Chair and Panel:
Omar Abdelaziz, Ph.D., Member, ORNL, Oak Ridge, TN
John Thome, Ph.D., Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
Zahid Ayub, Ph.D., P.E., Fellow ASHRAE, Isotherm, Inc., Arlington, TX
Kenneth Schultz, Ph.D., Member, Ingersoll Rand, La Crosse, WI
Ankit Sethi, Associate Member, Honeywell International, Buffalo, NY
Joshua Hughes, Member, Chemours, Wilmington, DE
From the previous session, this panel forum is a roundtable panel on lower GWP refrigerants within the context of the Kyoto Protocol. The audience has the opportunity to ask questions, offer case studies, propose ideas and discuss solutions on low GWP refrigerants for heat transfer equipment, air conditioning and heat pump systems.

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