Emerson’s new Copeland CO₂ scroll technology makes an important contribution to addressing current and future challenges in commercial refrigeration. Not only does it meet the requirements of F-gas regulation and increase energy efficiency: by simplifying refrigeration systems, it facilitates their design and helps to economically open up smaller shop sizes which are becoming increasingly important in the wake of urbanization. With its new technology, Emerson now offers a refrigeration solution that significantly reduces the CO₂ cost premium, lowers complexity and can be used in all climates.

Copeland CO₂ scroll compressors for trans- and subcritical applications

Emerson introduces three ranges of new generation Copeland CO₂ scroll compressors for transcritical (medium temperature) and subcritical (low temperature) operations offering fixed and variable speed models. All compressors are extremely compact, lightweight, and quiet compared to equivalent semi-hermetic compressors commonly used in CO₂ refrigeration. They generate less vibration and pulsation in refrigeration systems, improving reliable and safe system operation. This is particularly advantageous for use in noise-sensitive urban environments.

The new range of CO₂ scroll compressors for medium temperature applications with fixed speed (ZTI) covers a capacity range from 8 to19kW. Equipped with a dedicated brushless permanent magnet (BPM) motor, the variable speed models (ZTW) enable for additional flexibility while maintaining high efficiency enlarging capacity from 4 up to 36kW. The compressors always operate at optimal speed, rendering inefficient on-off operations obsolete.

In addition, Emerson offers two compressor ranges for low temperature applications, ranging from 6 to 15kW and covering fixed and variable speed models extending capacity up to 27kW. One range for subcritical applications operates with a standstill pressure of up to 110 bar, the other works with a standstill pressure up to 45 bar. The new generation of Copeland CO₂ scroll compressors includes a suite of smart electronics, integrated in an efficient and reliable solution for CO₂ booster systems that provide CO₂ refrigeration from 25 to 100kW MT.

This Copeland CO₂ scroll solution allows for applied cost savings up to 14% and seasonal efficiency gains up to 8% versus compression technologies commonly used in today’s CO₂ booster systems.

DVI for simplicity and highest efficiency

Emerson not only developed a new generation of scroll compressors, but also an innovative way of dealing with flash gas in its transcritical models: The new technology is called dynamic vapor injection (DVI) and injects vapor refrigerant directly from the flash tank (or from an economizer) into the scroll compressor via an injection valve. This eliminates the need for parallel compression, making CO₂ refrigeration systems less complex while delivering higher efficiency. By removing parallel compression less system components, such as parallel compressor, inverter drive or piping, are required. This not only simplifies the system design but also reduces costs for investment, operation or maintenance resulting in a very low total cost of ownership. In addition, the new Copeland CO₂ scroll technology can be applied to any climate zone, requiring only one single design for CO₂ refrigeration.

Digitalization enables further efficiency

Featuring an intelligent electronics design with the new Copeland XC Pro system controller that monitors, collects, and analyses a wide range of system data, this integrated solution is also able to offer digitalization to retailers. This includes remote diagnostics, predictive maintenance, performance analysis and comprehensive data analytics that enable improved system performance in a simple and efficient manner. In addition, the system can be connected to building management systems (BMS) for holistic smart building integration that improves overall building efficiency and helps refrigeration in retail stores operate smoothly.

Global launch of Copeland CO₂ scroll compressors

The unique and broad portfolio of Copeland CO₂ solutions for commercial refrigeration applications featuring innovative CO₂ scroll technology for simplified system architecture and reduced CO₂ cost premium will change the refrigeration market by enabling the large-scale roll-out of CO₂ refrigeration regardless of the climate.

The introduction of Copeland CO₂ scroll compressors will start in the European market and will gradually be extended globally over the coming years. For European markets only, Emerson also introduces a new range of refrigeration units featuring DVI technology and smart electronics.

Copeland CO₂ scroll refrigeration units for small and medium-sized shops

This new portfolio of refrigeration units is tailored to the requirements of the European market and encompasses a total of four refrigeration units for medium temperature applications. Ranging from 15 to 50kW of cooling power, they are perfectly suited for decentralized system architectures in small to medium sized supermarket and convenience shops. Each unit is designed for efficient and continuous operation even in the warmest climates. It helps ensure reliable operation up to 44°C ambient.

Equipped with Copeland CO₂ scroll compressors in tandem application and frequency inverter drives, the units offer a wide range of capacity modulation avoiding frequent on/off cycles. Pre-configured parameter settings enable time-saving plug & play installation, after which the intelligent control concept keeps operation within safe limits.

With low CO₂ scroll compressor vibration levels, latest EC fan technology and night mode control function, these units are also prepared for installation in noise-sensitive environments.

Engineered with a unique modular design concept for different ways of installation, the refrigeration unit allows for maximum flexibility in building integration: packed or split, indoor or outdoor, with a gas cooler that can be placed horizontally, vertically, and self-standing. The perfect choice for urban environments as well as for retailers expanding their shops’ refrigeration capacity where space is limited.

Find more details and insights about the innovative Copeland™ CO₂ scroll technology under www.emerson.com/thenewcool