During Chillventa 2016, Carel showcased Hecu CO2, the high-efficiency solution for condensing units that is now also compatible with systems operating on CO2 natural refrigerant.
Hecu sistema has now evolved to work with natural refrigerants by integrating management of DC inverter compressors for CO2.
By using DC inverter compressors, Hecu sistema can offer real modulation of cooling capacity, so as to achieve low energy consumption above all at part loads.
The system both complies with the Eco-design directive on energy performance and exceeds the limits set by the F-Gas Regulation for condensing unit applications.
Hecu sistema stands out for its real-time communication with the refrigeration units, allowing implementation of advanced system optimisation logic, with dynamic set points and extremely stable control so as to ensure perfect food preservation and reduce food waste; essential for the commercial refrigeration.
Carel supervisors can be used to monitor and optimise the operation of all connected systems, preventing possible malfunctions and scheduling maintenance so as to guarantee excellent service levels.
With Hecu sistema, condensing unit operation constantly reflects the demand of each unit connected to it.
The condensing unit adapts dynamically to real conditions (floating-suction and floating-condensing), while the E2V valves adjust refrigerant flow on the units fitted with MPXPRO controllers.
This fine control minimises fluctuations in stored food temperature even in the most critical stages, such as when defrosting or in response to variations in load, ensuring the best possible conditions for food preservation
Hecu sistema manages DC compressors with the focus on reliability, adopting a series of software functions aimed at improving oil return to the compressor.
Serial communication with the showcases also allows action to be taken directly on the evaporators, thus managing oil return even more effectively.
Hecu sistema is designed with usability in mind. pRack Hecu comes with a wizard to assist unit configuration, and a fast commissioning procedure that automatically pre-configures the connection to the showcases, and the related control algorithms.