Fourth Round of Case Studies Selected for ATMOsphere Europe 2017!

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Case studies from CAREL, Carrier, HB Products, Kawasaki Heavy Industries, SANDEN, UNDP and Viessmann will be presented at ATMOsphere Europe 2017 in Berlin, Germany.

The ATMOsphere Review Panel is pleased to announce the fourth round of case study selections for ATMOsphere Europe 2017 on 25-27 September in Berlin.

CAREL, Carrier, HB Products, Kawasaki Heavy Industries, SANDEN, UNDP and Viessmann will discuss their innovative natural refrigerant-based technologies at the conference. 

The presentations are:

CAREL | DC inverter CO2 condensing units for small and medium formats by Nicola Pieretti


CO2 technology is in continuous evolution. Conceived for big formats and cold climates only, it is now becoming a standard not only in warmer climates, but also in small and very small formats. The availability of CO2 DC compressors has created the opportunity to reduce costs and improve efficiency in condensing unit applications, a market historically driven by usability and costs. CAREL’s know-how in controlling DC compressors, combined with the top-in-class solution for C-stores and small commercial applications, is driving the European market to finally use natural refrigerants in all applications, even the smaller ones. Energy efficiency and easy use are inherent features of these solutions.

This case study presents the possible use of DC inverter compressors on condensing units, comparing energy efficiency against existing technology and detailing currently available maintenance and monitoring experiences. An additional use of DC inverter compressors will also be analysed.

Carrier | Latest developments in usage of ammonia as a refrigerant in industrial applications by Julien Pourriere & Guillaume Burvingt

Profroid is a historical leader in industrial refrigeration applications with new capabilities with ammonia. The case study will introduce a new solution for low temperature applications with an optimized NH3/CO2 cascade combining high performance with a reduced NH3 refrigerant charge.

HB Products | Capacitive measurement of void fraction by Michael Elstrøm & Jesper Nielsen


The World-climate is at stake with energy consumption of 15%-25% of all electricity for cooling, refrigeration and AC therefore new methods have to be developed to reduce energy consumption and increase system efficiency.

The case study will present the HBX-sensor (electronic sight glass), in real-time measuring the void fraction of the gas leaving the evaporator. The HBX-sensor also controls the motorized inlet- valve at the evaporator. With Dry Expansion systems (DX), the HBX-sensor manages a dry vapour gas enabling ammonia DX with reduced amount of super-heat.

The method is proven by several institutes (i.e. Technological Institute Aarhus, University of Gent, Technical University of Copenhagen) and more than 100 systems are in operation in Europe, USA and Australia. This technology hasn’t been yet presented at an European conference.

Kawasaki Heavy Industries | Kawasaki turbo chiller using R718 (water) as refrigerant by Hayato Sakamoto


It has been recognized that fluorocarbon refrigerants such as HFC has been widely used for air conditioning application, however, HFC is much contributing to global warming and causing climate change. It becomes a critical issue to reduce HFC use and to apply alternative refrigerant for air conditioning applications, especially, after the Kigali Amendment to the Montreal Protocol. Kawasaki has developed a turbo chiller using natural refrigerant of R718 (water) as refrigerant for air conditioning applications.

Besides the adoption of R718 (water) as refrigerant, Kawasaki turbo chiller has the comparable performance to existing chillers using HFCs, and it is as compact as existing chillers by optimum arrangement. Reduction of HFC would be 660 CO2-ton and inclusive emission of HFC and CO2 from power consumption would be reduced by 15% against existing HFC chillers.


SANDEN | Full store with compact and efficient CO2 plug-in by Emilie Aubry

Sanden developed a wide range of CO2 plug-in condensing units to cover the needs of retail stores for both medium and low temperatures. Air and Water cooled models offer to the food retail market efficient solutions that are based on natural and non-flammable refrigerant.

UNDP | Belarus - Low charge ammonia based cooling in administrative building by Selimcan Azizoglu

The demonstration Project “Indirect Low Charge Ammonia Refrigeration Unit” was implemented in cooperation with MyasoMolMontazh OJSC in Minsk. The project provided for installation of a refrigeration system with intermediate coolant based on fluid coolers/chillers with low refrigerant charge (ammonia R717, up to 100 kg) for room air conditioning in the administrative building.

It should be emphasized that the new ammonia-based refrigeration machine for the MyasoMolMontazh OJSC administrative building was made by a Belarusian company called Holodon CJSC. Thus, this demonstration project paved the way to the production of a new line of refrigeration equipment in the country; it served as an example of how conversion to modern technology can initiate production development and improve the manufacturer’s competitive edge, its ecological and economic advantages.

Viessmann | Viessmann ESyCool Green - Integrated Energy System for food retail

Viessmann will present the ESyCool Green energy system for various food retail formats. ESyCool Green Basic is based on Viessmann’s A++ energy efficiency rated R290 brine/water heatpumps in combination with brine refrigerated cabinets and cold rooms. The Basic solution is especially designed for retrofits of small and medium sized stores.