Emerson and Future Green Now analyzed to what extent adiabatic gas coolers and other technologies improve efficiency in different climate zones.
Professor Armin Hafner sees this and other innovations expanding the market for CO2 HVAC&R systems.
Next year the German wholesaler is planning to refurbish 40 stores with transcritical CO2 and ejector technology, while using hydrocarbon equipment for “smart repairs.”
The supermarket in Røyken was the first to install the new Advansor ValuePack II, saving both energy and space with the compact solution.
The EU-funded MultiPACK project is testing the performance of cooling/heating CO2 solutions in supermarkets and other buildings.
A study by the National Technical University of Athens shows a mean 23% COP improvement via subcooling with an ammonia absorption chiller.
Thirty-six are transcritical CO2 system, including 11 with parallel compressors and two with ejectors.
Retrofit of 20-year-old R404A system is Metro’s 18th CO2 system with ejectors.
The multinational German chain has transcritical CO2 systems using ejectors in 14 locations, with 10 more planned.
Minibooster and Tower units, imported from Europe, are designed for small stores and retrofits
