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Ammonia/CO2 Cascade Refrigeration System at a Defense Com...


About this presentation

related to ATMOsphere America 2012
published on 12 June 2012
20 pages
3 MB

Rob Arthur presents a project that aimed to develop a commercial refrigeration system that was more energy efficient and more environmentally friendly then the standard refrigeration systems being used in U.S. grocery stores today. He shows that the ammonia/CO2 cascade system is predicted to be at a minimum 10% more energy efficient with very little global warming potential and no ozone depletion potential. Project sponsor is the Department of Energy through the Commercial Building Partnership programme that is managed by National Renewable Energy Lab (NREL).

About the speaker(s)

Rob Arthur


Rob is a Licensed Professional Engineer who graduated from Montana State University in 1995 with a Bachelors degree in Mechanical Engineering. Rob holds Mechanical Engineering licenses in 31 States and is currently applying for licensure in Canada and Puerto Rico.

Upon graduation, Rob was hired by Albertson Inc. as a Refrigeration Design Engineer. In his last couple years at Albertson’s, he became a Project Engineer, responsible for managing the Mechanical Consultants that did the Refrigeration, HVAC and Plumbing design for both new and remodel projects for several regions of Albertsons owned stores. In 2000 Rob joined CTA Architects Engineers in Missoula, MT. At that time, the CTA Refrigeration Group consisted of Rob and one other member. Since then, Rob has been fortunate enough to attract 28 new members. The group has become the Refrigeration Engineer of Record and Trusted Advisor for more than 12 national and regional Retailers, plus it does consulting work for many other organizations such as Refrigeration Equipment Manufactures and Government Agencies.

Rob and CTA Refrigeration are very active in the Supermarket Industry in developing sustainable refrigeration systems. CTA was the Engineer of Record for the first GreenChill Platinum store and also the first 100% natural refrigerant GreenChill Platinum store along with numerous other GreenChill certified projects.