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Conveni-Pack with the natural refrigerant CO2




EMEA design centers of DICz (responsible for indoor unit development) and DENV (outdoor unit) have been working for the past year on development of a system branded as Conveni-pack using brand new refrigerant based on CO2 .This system is particularly climate-friendly thanks to its GWP (Global Warming Potential) of 1. Its positive thermodynamic properties such as low viscosity, high thermal conductivity, high vapour density and classification in safety class A1 as a non-toxic and non-flammable refrigerant make CO2 the ideal refrigerant for food refrigeration.

The Conveni-Pack provides commercial refrigeration, comfort cooling and heating, and ventilation in a single system. For heating the sales and functional spaces, the system uses the thermal energy from the refrigerated shelves, display cases and evaporators, which results in high energy saving potentials. 


Innovative technology for high energy efficiency

A new swing compressor specially designed for CO2 refrigerant increases the energy efficiency of the Conveni-Pack and thanks to reduced wear, ensures 5 to 15% higher efficiency under nominal operating conditions. The life expectancy of the new compressor is significantly longer due to a low discharge temperature (maximum 100°C) and more precise control of the oil temperature. The new Conveni-Pack saves energy compared to a conventional system through the use of BLDC inverter motors, effective pressure control, two-stage compression, and minimal defrosting losses. Seasonal heat recovery leads to further energy savings. The Conveni-Pack meets the needs of supermarkets perfectly, thanks to broader performance regulation. By choosing the Conveni-Pack, supermarkets can achieve their environmental goals while saving energy costs. Thanks to the combination of cooling, air-conditioning, heating and ventilation functions in one system, the Conveni-Pack requires 40% less floor space. 


In this fiscal year 2020 EDC has developed a system with ducted indoor unit. Due to its success, there is already a development plan for system with cassette type indoor unit, starting in the fiscal year 2021.