At the Tops store in Alden, New York, 1,200 pounds of Creard R-407H has been used to provide more than 25 cooling tons in medium-temperature refrigerated cases and displays, replacing R-22 refrigerant.
Daikin’s new Creard R-407H refrigerant is an economical, low GWP blend designed for new refrigeration systems and as a replacement for R-22, R-404A and R-507 in existing systems, the company says. Creard R-407H has a GWP of 1,380, one of the lowest GWP options for refrigeration systems, providing a “unique combination of outstanding performance while being economical relative to the products it is replacing,” says Daikin.
The Daikin engineering team worked closely with Tops to address the following key requirements:
- A GWP of <1500 to position Tops with a sustainable solution for the useful life of the equipment in the event of any future climate related regulatory policies.
- Equivalent or better energy efficiency and refrigeration capacity across the entire operating range.
- A close match in temperature, pressure and volumetric flow rate properties to R-22, in order to utilize the same expansion devices, distribution system and piping.
- Traditional chemistry, with proven material compatibility with legacy R-22 equipment.
- Cost-effectiveness in long-term operation.
After the conversion from R-22 to Creard R-407H, the system was monitored for three months (March-May 2018). Throughout the test, data was collected related to operating pressures, temperatures and the energy consumption of the system. The power consumption during the test months when compared to R-22 was 2 percent higher after the first fill and system shakedown, and then improved to 0.5 percent lower energy consumption after the controller was tuned. The cooling capacity remained the same between R-22 and R-407H.
Tim Bowen, Tops Markets maintenance manager, stated, “Creard R-407H is and will be a great help to Tops Markets’ bottom-line due to its energy efficiency, cost and requiring minimal changes to our equipment. Since Creard R-407H has demonstrated to be a cost-effective, low-GWP match with R-22, this really becomes a great solution for Tops Markets as we move forward with our conversion program this year.”
TDH Refrigeration performed the retrofit during a single overnight shift, following traditional retrofit procedures.
“We followed the same conversion steps as with other commercially available retrofit refrigerants,” said Bob Randon, president, TDH Refrigeration. “The R-22 to R-407H refrigerant conversion was completed with only a few adjustments required at system EPR valves. Monitoring of equipment operation and product temperatures post conversion have provided good results.”
“We feel great about the choice of working with Daikin and Creard R-407H,” added Chris Watson, director of construction and maintenance for Tops Markets. “And as far as helping the environment, there’s no comparison at all, Creard R-407H is clearly best in class.”