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Ammonia and CO2 are considered alternative refrigerants in some sectors. This seminar presents the background behind the movement to natural refrigerants, successful design approaches employed in Europe and North America using ammonia. An end-user's perspective, experience and decision-making parameters that affect the choice of refrigerants, including the use of low-charge ammonia systems is presented. Lessons learned about the design, installation and operation of a transcritical CO2 system in a Refrigerated Distribution Center are also discussed. The overall objective of this session is to demonstrate the benefits of natural refrigerants and ways to employ them cost effectively.

• The Transition to Natural Refrigerants
  Randal Peterson, P.E.
• Low Charge Ammonia Case Studies
  Caleb Nelson, P.E., Associate Member
• An Owner's Perspective: Electronic Refrigerant Injection Control (ERIC) Ammonia Applications
  John Scherer
• Transcritical CO2 in a Refrigerated Warehouse
  John Gallaher

Run Time: 90 mins.

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