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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 could be considered, to supply not only heating in the wintertime but also air conditioning in the summertime, with a significant cut in the investment cost. The main conclusion is that CO2 systems have some peculiarities which can be exploited to reduce the gap in energy use when compared to traditional HFC systems in mild/warm climates. Enlarging the boundaries of the investigation to include the heating systems allows a wider point of view and suggests synergic solutions where the total running costs can be effectively reduced. 7. ACKNOWLEDGMENT The research leading to these results has received funding from the MIUR of Italy within the framework of PRIN2015 project «Clean Heating and Cooling Technologies for an Energy Efficient Smart Grid» grant n° 2015M8S2PA. 8. REFERENCES Adrianto L.R., Grandjean P., Sawalha S., 2018. Heat recovery from CO2 refrigeration system in supermarkets to district heating network. 13th IIR Gustav Lorentzen Conference, Valencia (E), paper ID 1385. DOI: 10.18462/iir.gl.2018.1385 Arias, J., Lundqvist, P., 2006. Heat recovery and floating condensing in supermarkets. Energ Buildings 38 (2), 73-81. DOI: 10.1016/j.enbuild.2005.05.003 Bell, I.H, Wronski, J., Quoilin, S., Lemort, V., 2014. Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp. Ind. Eng. Chem. Res. 53(6), 2498-2508. DOI: 10.1021/ie4033999. BITZER, 2017. BITZER Software v6.7.0 rev1852 – Available at: https://www.bitzer.de/websoftware/ [accessed 31.07.2018]. Cavallini A., Zilio C., 2007. Carbon dioxide as a natural refrigerant, International Journal of Low-Carbon Technologies, 2(3), 225-249. DOI: 10.1093/ijlct/2.3.225 th Chiarello, M., Girotto, S., Minetto, S. 2010. CO2 supermarket refrigeration system for hot climates. 9 Gustav Lorentzen Conference on Natural Working Fluids, Sydney, Australia. p. ID: 39. IIR Cortella G., D’Agaro P., Franceschi M., Saro O., 2011. Prediction of the energy consumption of a supermarket refrigeration system, 23rd International Congress of Refrigeration, Praha (CZ), p. ID: 840. Cortella G., D’Agaro P., Saro O., Polzot A., 2014. Modelling integrated HVAC and refrigeration systems in a supermarket, 3rd IIR International Conference on Sustainability and the Cold Chain, Twickenham, London (UK), 203-210. Cortella G., D’Agaro P., Coppola M.A., 2018. Simulations and field tests of a CO2 refrigerating plant for commercial refrigeration. 13th IIR Gustav Lorentzen Conference, Valencia (E), paper ID 1215. DOI: 10.18462/iir.gl.2018.1215PDF Image | R744 BOOSTER INTEGRATED SYSTEM
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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