Sunday, 26 June 2016: 1:30 PM-3:00 PM
Advances in Refrigeration Systems and Alternative Refrigerants
Chair:
Tom Wolgamot, P.E., DC Engineering
Technical Committee: 10.01 Custom Engineered Refrigeration Systems
CoSponsor: 10.05 Refrigerated Distribution and Storage Facilities
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.
1 The Transition to Natural Refrigerants
 |
Randal Peterson, P.E. |
This session covers the background behind the movement to Low GWP and Natural Refrigerants, discussing regulations and phase-out dates, both nationally and internationally. The case is made that owners need to begin reviewing alternatives, and why both Ammonia and CO2 are very viable alternatives.
2 Low Charge Ammonia Case Studies
 |
Caleb Nelson, P.E., Azane, Inc. |
This session presents several case studies in which low-charge ammonia systems were employed both in the US and Europe. The case studies include details about the specific project constraints, and how low-charge ammonia systems were designed to fit within those constraints in an overall cost-effective manner.
3 An Owner's Perspective: Electronic Refrigerant Injection Control (ERIC) Ammonia Applications
 |
John Scherer |
The overall objective of any design engineer is to provide a cost-effective system that meets the owner's long-term needs. This session reviews the issues and concerns of a refrigeration system from an owner's perspective, and the lessons learned from the deployment of low-charge ammonia systems.
4 Transcritical CO2 in a Refrigerated Warehouse
 |
John Gallaher, Hill Phoenix |
There is a tremendous amount of activity using CO2 in addition to ammonia. This case study reviews a refrigeranted storage and processing warehouse that was constructed using an existing building shell in the greater Chicago area. Transcritical CO2 was used to serve multiple temperature areas as well as a portion of the facility that was dedicated to retail sales. This seminar covers the design, installation, and operation stages of the project and provide lessons learned through the process.