Commercial refrigeration in a transcritical cycle
Mini NS21 compact system from Tewis
Tewis is the expert in the Daikin Group for CO2 refrigeration systems. In addition to its expertise in customer-specific control and regulation systems (including monitoring), Tewis and its 100 employees offer comprehensive overall solutions for air-conditioning and refrigeration applications. In recent years, the manufacturer has focused specifically on the development of CO2 refrigeration systems. At Euroshop 2020, the company, which is a leader in the field of technical planning and implementation of refrigeration systems, will be presenting the new Mini NS 21, a compact refrigeration system for cooling and deep-freezing. This is ensured by a booster, which provides the connection to freezer shelves or cold stores.
Innovative technology in minimal space
The Mini NS21 can have up to two MT compressors and one LT compressor. An inverter for the MT compressor, and optionally for the LT compressor, ensures that operation is adapted to current requirements, thus saving energy. The system also has a storage tank for the oil separator, a liquid container with a capacity of 48 litres, which contains an internal evaporator sensor for connection to the back-up unit, and two electronic sensors that monitor the refrigerant level. The system comes fully wired and equipped with electronic controls. It takes little space (a footprint of less than one square metre), while allowing easy access to all components, simplifying installation and maintenance.
With a GWP (GWP = Global Warming Potential) of 1, natural refrigerant CO2 is particularly climate-friendly and also works more efficiently than other refrigerants thanks to its high volumetric cooling capacity. 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 Mini NS21 from Tewis is a compact system for cooling and deep-freezing. © Daikin
The Spanish company is a leader in the technical planning and implementation of commercial refrigeration. This includes cooling, deep-freezing and highly efficient, integrated air-conditioningsystems. The company's 360° concept aims for optimal installation and efficient maintenance – tailored to suit the individual needs of the customer. Thanks to a closely coordinated and holistic approach by the company, energy consumption, performance, maintenance and much more are analysed and the best technology for all requirements defined.
About Daikin Europe N.V.
Daikin Europe N.V., based in Ostend, Belgium, is a leading manufacturer of air-conditioning systems, heat pumps and refrigeration technology (commercial refrigeration) with around 6,500 employees throughout Europe and production facilities in Belgium, the Czech Republic, Germany, Italy, Austria, Spain, Turkey and the UK.
Globally, Daikin is renowned for its pioneering achievements in product development and the unrivalled product quality and versatility of its complete solutions. Daikin is the only air-conditioning system manufacturer in the world to develop and produce all important components such as refrigerants, compressors and electronics itself.
With over 90 years of experience in the development and manufacturing of heating and air- conditioning solutions, Daikin is today the market leader in heat pump technology. For example, the Daikin VRV product series for commercial applications and Daikin Altherma for private applications are the best sold heat pump systems in Europe with over 500,000 units.
Over 85% of the equipment for the European market is also produced in Europe. The research and development departments established in the Belgian cities of Ostend and Ghent are geared to the country-specific conditions in Europe.
In mid-2016, Daikin Europe N.V. acquired Zanotti S.p.A., an Italian manufacturer of industrial and transport refrigeration, and air treatment and dehumidification systems. This was followed in 2018 by the acquisition of Tewis Smart Systems S.L., one of Spain's leading companies for standardised and customised refrigeration solutions. The acquisition of the Austrian refrigeration specialist AHT Cooling Systems GmbH was completed at the beginning of 2019. Daikin thus completes its product portfolio and further expands its commercial and industrial refrigeration business in Europe.
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