In addition to featuring a number of low-charge ammonia products, the IARW-WFLO Convention & Expo, held in Orlando, Florida on 26 – 19 April, included several exhibitors promoting CO2-only and ammonia/CO2 refrigeration systems. While CO2 is still relatively new for the refrigerated warehouse operators attending the show, it is slowly gaining traction as an alternative to traditional high-charge ammonia systems.
Art Mathews, business development manager, industrial products, for Bitzer observed that at the IARW show there was “a lot of interest in CO2, both ammonia/CO2 and CO2 transcritical. Everybody wants to reduce ammonia charge or get out of HFCs.”
We proved to ourselves that ammonia/CO2 was lower charge and more efficient,” he said. “PG&E (Pacific Gas & Electric) did an energy survey and found that the system was 5.6% more efficient than a two-stage ammonia system.” As a result, US Cold Storage received energy rebates.
That E-mail already exists on our list !