Dorin obtains UL Recognition for transcritical CO₂ compressor range

After challenging testing protocol, Dorin’s CD400 range of CO₂ compressors have been UL recognised under the file SA11929, including:

• M models: Single stage transcritical compressors suitable for medium temperature commercial refrigeration and transport applications with standstill pressure of up to 100 bar and displacement of up to 36.6 m3/h at 60Hz.

• B models: Single stage subcritical compressors suitable for low temperature commercial applications dedicated to cascade or booster concepts with standstill pressure of up to 100 bar and displacement of up to 36.6 m3/h at 60Hz.

• H models: Single stage transcritical compressors suitable for medium temperature commercial refrigeration, transport and heat pump applications, with standstill pressure of up to 100 bar and displacement of up to 31.9 m3/h at 60Hz.

• 2S models: Double stage transcritical compressors suitable for low temperature commercial applications used in freezing equipment with no need for booster or cascade concepts, with standstill pressure of up to 100 bar and displacement of up to 18.1 m3/h at 60Hz.

While until now special permission to use Dorin’s CO₂ transcritical compressors from the CD400 range had to be granted on a case-by-case basis, the UL Recognition lifts this barrier and paves the way for their widespread use across North America.

In addition to the CD400 range approval, Dorin currently has under testing its CD200 range and expects the CD300 range to follow.

Applications

Dorin compressors can now be used for a variety of applications where CO₂ provides interesting economic advantages and positive environmental benefits; thus, fulfilling expectations related to the uptake of CO₂ technology in various North American applications.

R744.com asked CO₂ Compressors Business Development Manager, Giacomo Pisano of Dorin, what has been the motivation for seeking UL certification and what are his expectations regarding market acceptance of CO₂ technology for various applications in North America:

North America is picking up with CO₂ applications and since we are a compressor leader in this field we needed to keep the momentum to continue to be a preferred compressor option in North America,” says Pisano.

In regards to which CO₂ system types, sizes and applications these compressors enable:

Any application from condensing units to supermarket racks to industrial processing to heat pumps,” Pisano adds.

About UL

Established in 1894, UL (Underwriters Laboratories) is a global independent safety product safety testing and certification organisation with expertise in innovating safety solutions from the public adoption of electricity to new breakthroughs in sustainability, renewable energy and nanotechnology.

About Dorin

Dorin is a leading Italian compressor manufacture headquartered in the province of Florence, Italy. Founded in 1918 as a manufacturer of machine tools, air compressors, liquid pumps and vehicle motor repairers, Dorin began producing compressors for refrigeration systems in 1932. The first CO₂ transcritical type was commissioned in 1999 and today, their vast range of over 70 semi-hermetic compressors are the core of the company.