Page 19 - Climate Control News November 2021

Compressors, Condensers & Evaporators
New era in commercial refrigeration
EMERSON HAS RELEASED new Copeland scroll technology for CO2 refrigeration systems.
Emerson has launched a new solution for CO2 booster systems that enables reduced system complexity and costs while keeping efficiency high in any climate.
There are three ranges of new generation Copeland CO2 scroll compressors for transcriti- cal (medium temperature) and subcritical (low temperature) operations offering fixed and vari- able speed models.
All compressors are extremely compact, light- weight, 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 ad- vantageous for use in noise-sensitive urban envi- ronments.
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 perma- nent magnet (BPM) motor, the variable speed models (ZTW) enable additional flexibility while maintaining high efficiency enlarging capacity from 4 up to 36kW.
The compressors always operate at opti- mal speed, rendering inefficient on-off opera- tions 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 oper- ates 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 electron- ics, integrated in an efficient and reliable solu- tion 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 per cent and sea- sonal efficiency gains up to eight per cent versus compression technologies commonly used in to- day’s CO2 booster systems.
Emerson not only developed a new generation of scroll compressors, but also an innovative way to deal with flash gas in its transcritical models.
The new technology is called dynamic vapor in- jection (DVI). It injects vapor refrigerant directly from the flash tank (or from an economiser) into the scroll compressor via an injection valve.
This eliminates the need for parallel compres-
sion, making CO2 refrigeration systems less complex while delivering higher efficiency.
By removing parallel compression there are less system components, such as parallel com- pressor, inverter drive or piping, required.
This not only simplifies the system design but also reduces costs for investment, opera- tion or maintenance resulting in a very low to- tal 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.
“EMERSON HAS DEVELOPED NEW TECHNOLOGY WHICH ELIMINATES THE NEED FOR PARALLEL COMPRESSION.”
DIGITAL FEATURES
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 digitalisation to retailers.
This includes remote diagnostics, predictive maintenance, performance analysis and com-
prehensive data analytics that enable improved system performance.
In addition, the system can be connected to building management systems (BMS) for holistic smart building integration.
CO2 REFRIGERATION
The introduction of Copeland CO2 scroll com- pressors will start in the European market and gradually be extended globally over the com- ing years.
This new portfolio encompasses a total of four refrigeration units for medium temperature ap- plications. Ranging from 15 to 50kW of cooling power, they are perfectly suited for decentralised system architectures in small to medium sized supermarkets and convenience shops. Each unit is designed for efficient and continuous opera- tion even in the warmest climates. It helps en- sure reliable operation up to 44°C ambient.
Equipped with Copeland CO2 scroll com- pressors in tandem application and frequen- cy inverter drives, the units offer a wide range of capacity modulation avoiding fre- quent on/off cycles.
Pre-configured parameter settings enable time-saving plug & play installation. Engineered with a unique modular design concept for differ- ent ways of installation, it is the ideal choice for retailers expanding their shops’ refrigeration ca- pacity where space is limited.
Emerson has launched a new solution for CO2 booster systems for reduced system complexity.
CLIMATE CONTROL NEWS
NOVEMBER 2021
19