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            | Ammonia and CO2 Refrigeration 
              Technologies International Conference
 - Ohrid 2017 -
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                Keynote Speakers
                   
                    |  | Dr 
                      Andy Pearson, UK, President of Scientific Committee
 Former President of IoR UK,
 Member of IIR Commission E1
 "Mega-trends 
                      in
 industrial refrigeration"
 |  | Dr Predrag Hrnjak, 
                      USA, University of Illinois
 Member of IIR Commission E2,
 Former member of IIAR Board of Directors
 "Efficient 
                      very low
 charged ammonia
 refrigerating systems"
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                    |  | Dr Armin Hafner, 
                      Norway, University NTNU
 Professor
 "Integrated CO2 system
 for refrigeration, air
 onditioning and sanitary
 hot water"
 |  | Sergio Girotto, Italy, Enex srl
 Chief Executive
 "Improved transcritical 
                      CO2
 refrigeration systems for
 warm climate"
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                    |  | Alexander Pachai, 
                      Denmark JCI - Sabroe Factory
 Member UNEP RTOC 
                      Committee
 "Freezing systems for
 high ambient temperatures"
 |  | Dr Robert Lamb, UK, Star Refrigeration Ltd
 Marketing Director
 "Low charge packaged ammonia refrigeration 
                      systems"
 |  Main Topics of the Conference
 Design 
                  of modern ammonia (NH3) systems and technological innovation
 Low charge ammonia technology; Small size ammonia systems; Factory-made 
                  units;
 Advanced design and testing methods;
 Compatibility of ammonia with metals and new oils.
 
 Design 
                  of carbon dioxide (CO2) refrigeration and heat pump systems
 Transcritical and subcritical operation;
 Modifications of cycles to improve the energy efficiency;
 Development of CO2 systems intended for hot climate;
 Ejector as an expansion device.
 
 New innovative components
 Plate and “shell & plate” heat exchangers; DX evaporators;
 Microchannel air-cooled condensers; Improved evaporative condensers;
 Semi-hermetic and hermetic ammonia compressors;
 High-pressure ammonia and CO2 compressors.
 
 Energy efficiency of 
                  ammonia and CO2 refrigerating systems
 Advantages of ammonia and CO2 versus fluorocarbon-based systems;
 New secondary coolants; CO2 as a secondary coolant;
 NH3/CO2 cascade systems.
 
 Applications of 
                  ammonia and CO2 refrigeration
 Cold stores, food and drink industries; Supermarkets; Air-conditioning 
                  systems (liquid chillers);
 Heat pumps (medium and high temperature heating).
 
 Absorption machines
 Modified absorption cycles; Trigeneration and district cooling.
 
 Ammonia and CO2 systems 
                  in developing countries
 Modernisation, improvements, technical assistance, barriers.
 
 Technical and safety 
                  issues; Guidelines and training materials
 Regulations on the construction and operation of ammonia and 
                  CO2 refrigerating systems;
 Education and training for: best practices, operating procedures, 
                  handling and safe operation.
 
 Public awareness of the 
                  image and benefits of natural refrigerants
 Crucial and sustainable contributions to a better environment; 
                  Barriers to market penetration;
 Current and future use of natural refrigerants; Montreal and 
                  Kyoto Protocol, phase-down of HFCs.
 
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