This research group have been working on industrial, commercial and residential refrigeration systems for decades. The growing energy demand for refrigeration in different applications and its consequent share of on the global energy demand have risen much interest to find new technical solutions to improve the energy efficiency. Thus cascade cycle and air cycle has been studied as efficient means to reach low temperatures (below -40°C). Furthermore an activity to monitor the present technological development in industries of the refrigeration sector is ongoing in order to determine the reference baseline and to suggest possible improvements. Moreover heat pump systems are studied and optimized in the lab as very efficient and promising devices for HVAC plant. It is also in place an activity about new refrigerants at low environmental impact both from a technical and regulation perspective.

In particular thermodynamic analysis of different plants and their application are performed:
• Experimental and simulation analysis of heat pumps and their components
• Experimental and simulation analysis of absorption chiller
• Experimental and simulation analysis of cascade cycle and air cycle for low temperature refrigeration.
• New refrigerants and their impact on the technological and energy scenario of the refrigeration sector.


The activities are carried out in the Refrigeration Laboratory.

  1. G. Giuliani, N. J. Hewitt, F. Marchesi Donati, F. Polonara, Composition shift in liquid-recirculation refrigerating systems: an experimental investigation for the pure R134a and the mixture R32/134a, International Journal of Refrigeration, Vol. 22, No. 6, pp. 486-498, 1999. doi: 10.1016/S0140-7007(99)00009-2
  2. G. Di Nicola, G. Giuliani, F. Polonara, R. Stryjek, Blends of carbon dioxide and HFCs as working fluids for the low-temperature circuit in cascade refrigerating systems, International Journal of Refrigeration, Vol. 28, n. 2, pp. 130-140, 2005. doi:10.1016/j.ijrefrig.2004.06.014
  3. G. Di Nicola, F. Polonara, R. Stryjek, A. Arteconi, Performance of a cascade cycle working with blends of CO2 + natural refrigerants, International Journal of Refrigeration, vol.34, n.6, pp. 1436-1445, 2011, ISSN 0140-7007, doi:10.1016/j.ijrefrig.2011.05.004
  4. A. Arteconi, C. Brandoni, G. Di Nicola, F. Polonara, Comparison of refrigeration cycles with natural refrigerants for very rapid food freezing, Proceedings of the 10th Gustav Lorentzen Conference on Natural Refrigerants, Delft, The Netherlands, June 2012, ISBN 978-2-913149-90-8, ISSN 0151.1637, Paper 277
  5. A. Arteconi, C. Brandoni, G. Rossi, F. Polonara, Experimental evaluation and dynamic simulation of a ground coupled heat pump for a commercial building, International Journal of Energy Research, Vol 37, Issue 15, 1971-1980, 2013, ISSN: 1099-114X, DOI: 10.1002/er.3059.
  6. A. Arteconi, G. Giuliani, M. Tartuferi, F. Polonara, Characterization of a mini-channel heat exchanger for a heat pump system, Journal of Physics: Conference Series, Volume 501, Issue 1, 2014, Article number 012023
  7. A. Arteconi, E. Ciarrocchi, F. Polonara, J.F. Chen, S. Deng, R.Z. Wang, Performance analysis of a carbon dioxide heat pump installed in a residential application, IIR Gustav Lorentzen Conference on Natural Refrigerants, Paper 016, Hangzhou, Popular Republic of China, August 31 – September 2, 2014
  8. A. Arteconi, G. Ciriachi, M. Acar, N. Bilgin, F. Polonara, Analysis of an ejector vapour compression cycle for household refrigerator, Proceedings of 24th International Congress of Refrigeration, August 16-22, 2015, Yokohama, Japan, paper 471
  9. F. Piscaglia, A.Blasi, S. Del Moro, F. Polonara, A. Arteconi, L. Zanarelli, A. Renzulli, Monitoring of a vertical borehole ground-coupled heat pump system: a case study from a marly-limestone heat reservoir (Urbino, central Italy), Geothermics 62 (2016) 61–69, ISSN: 0375-6505, doi:10.1016/j.geothermics.2016.02.008
  10. A. Arteconi, F. Polonara, Demand side management in refrigeration applications, International Journal of Heat and Technology, Vol. 35, Special Issue 1, September 2017, pp. S58-S63, DOI: 10.18280/ijht.35Sp0108
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