Events
Sponsors
 |
Ezra Clark - Supporting Refrigerants, Naturally!
PDF document
published on 7 November 2012
Refrigerants, Naturally! is a global initiative of multinational corporations that aims to replace the use of HCFCs and HFCs in their point-of-sale cooling applications. Refrigerants, Naturally! supports a positive regulatory and political framework for investment in climate-friendly technologies. Current partners include Coca-Cola, Unilever, McDonald’s, PepsiCo and Red Bull. The initiative is supported by Greenpeace and the United Nations Environment Program (UNEP).
view presentation
Technology case studies II |
 |
Torben M. Hansen - Transcritical CO2 cooling and freezing system for Norwegian ice cream manufacturer
PDF document
published on 7 November 2012
Torben M. Hansen from Advansor introduced a case study with performance analysis of the 220kW (at -38°C) industrial transcritial CO2 system with 150kW of heat recovery and hot gas defrost. According to the simulation of energy consumption, the R744 system with heat recovery achieves reductions of 1,000 tons of CO2 equivalent per year (direct and indirect emissions) in comparison with a similar R404A system.
view presentation
 |
Sergio Girotto - CO2 refrigeration in warm climates, efficiency improvement
PDF document
published on 7 November 2012
Sergio Girotto from enEx offered two practical solutions available today for the use of CO2 transcritical systems in Southern European climate. Overfed evaporators (reducing superheat losses) contribute to 10-12% energy savings in all climatic conditions due to lower compression work, at increased reliability and reduced total cost. Combined with a flash vapour recompression and an ejector (reduction of throttling losses) the energy savings in southern climate amount to up to 22% (referred to Italian climate).
view presentation
 |
Torben Funder-Kristensen - Refrigeration and heat recovery with CO2 in food retail stores
PDF document
published on 7 November 2012
Torben Funder-Kristensen from Danfoss showed the advantage of a R744 commercial system with heat recovery on a case study from Denmark. The CO2 booster system of 160kW cooling capacity (5 MT and 4 LT compressors) with heat recovery has a 34% lower TEWI than a conventional R404A system with high direct emission. With a potential running cost reduction of 20%, CO2 systems with heat recovery are suitable for supermarket applications.
view presentation
 |
Jonas Schoenenberger - Efficiency analysis and comparison of innovative CO2 refrigeration systems
PDF document
published on 7 November 2012
Jonas Schönenberger from Frigo Consulting presented the analysis of several CO2 transcritical systems examined in search for an efficiency improvement. CO2 transcritical systems with a parallel compression, an expansion-compression unit or an adsorption chiller deliver desired improvement and prove to be efficient at high ambient temperature. The CO2 system with the adsorption chiller provides 6% energy savings due increased subcooling and additional 6% on energy saving on compression.
view presentation
 |
Samer Sawalha - Field measurements of supermarket refrigeration systems: CO2 transcritical vs. HFC conventional
PDF document
published on 7 November 2012
The case study presents experiences in applying CO2 in supermarket refrigeration and in ice rinks. Computer simulation modelling, laboratory experimental work and actual field measurements were used to investigate CO2 in indirect, cascade and transcritical refrigeration systems. In this case study the cooling demands and the COP of five CO2 transcritical and three conventional supermarket installations are presented.
view presentation
 |
Diego Malimpensa - Sustainability of CO2 technology and the role of control systems
PDF document
published on 7 November 2012
Diego Malimpensa from Carel introduced a simple and cost-effective solution for warmer climates - CO2 booster with evaporative cooling - that leads to 5% higher efficiency than a reference HFC system in tested environment of Istanbul, Turkey.
view presentation
Conclusions & Report |
 |
Marc Chasserot - ATMOsphere Europe 2012 Report
PDF document
published on 12 November 2012
"This year ATMOsphere Europe brought together nearly 200 experts from 100 organisations to dis- cuss natural refrigerant solutions for Europe. We had solutions and experiences from top food re- tailers and consumer brands as well as leading industry suppliers all seeing the 'green growth' opportunity for Europe. We had the 'world exclusive' from the European Commission presenting its latest F-Gas Regulation that will make life harder for HFCs and thereby create new opportunities for natural refrigerant alternatives" says Marc Chasserot, Chairman of ATMOsphere Europe 2012 and shecco Managing Director.
view presentation