Researchers also looked at the effects of mechanical subcooling and vapor ejectors, using a model developed with field measurements taken from an Italian supermarket.
According to new study, economizers and extra compression make transcritical suitable in most European climates, saving up to 8.5% in energy consumption.
A subcooling system equipped with thermoelectric modules improves cooling capacity up to 33%, and COP upto 24%, a study found.
Transcritical chiller offers payback on 47% premium in a few years, says Zero Zone paper that compares CO2, NH3 and R448A.
A study by the National Technical University of Athens shows a mean 23% COP improvement via subcooling with an ammonia absorption chiller.
A recent study illustrates how multi-ejector CO2 technology can lead to significant energy-efficiency gains in supermarkets in warm regions.
CO2-based technology can provide efficient heating and cooling in Spanish supermarkets despite the country’s warm climate, according to a paper presented by experts from the NTNU and SINTEF at Gustav Lorentzen this week. Estimations based on six representative cities show how HFC-free solutions lead to remarkable energy savings. The EU F-Gas Regulation bans the use…
A study conducted by Emerson and ILK Dresden concludes that integral hydrocarbon display cases are more efficient than remote CO2 transcritical rack systems.
The study, supported by the Swiss Federal Office of Energy and published in the magazine Kälte Klima Aktuell, is called ‘Ejector cooling system conquers the market’.
The ATMOsphere Review Panel has selected new speakers from SCM Frigo, CAREL Australia, Emerson, CRS, KAV Consulting and Kawasaki Heavy Industries to be presented at ATMOsphere Australia 2017.
R744.com is an independent marketplace for ammonia HVAC&R products and services, and a trusted source for the latest ammonia news from around the world.
