Modeling indicates that switching refrigeration from R452A to R290 results in saving approximately $1,200 per container per year.
The air-to-water units achieve SCOPs of up to 4.5, while delivering up to 77°C outlet temperatures in ambient conditions down to −20°C.
GIZ and U.K. consultant Re-Phridge are developing a risk assessment for the units that outlines safety standards and operator training.
The company does not currently offer a CO2 reefer and said it sees HFO 1234yf as an “intermediate solution” between R134a and natural refrigerants.
The €2.9 million endeavor aims to show the shipping industry what is possible with propane, said Kirsten Orschulok, GIZ Greener Reefers Project Lead.
The 16th Gustav Lorentzen Conference featured presentations focused on increasing the performance of CO2 and R290 heat pumps in MAC.
Local regulatory testing is underway, and the company expects units to be available later this year.
The Trane LEAF heat pump lineup can deliver heating, cooling and hot water production with capacities of 8–30kW.
