Two years of data monitoring of all-CO₂ retail stores within the MultiPACK project

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Abstract

This paper presents the results of a 24-month field monitoring of CO₂ transcritical units designed to satisfy all the thermal needs of food retail stores, namely refrigeration, heating and cooling. The units, adopting state-of the art technologies, such as two phase ejectors and parallel compression, are developed within the H2020 project MultiPACK. The monitored supermarkets are located in Italy, in two different climatic areas, featuring different heating and cooling demands for indoor comfort, as well as diverse building type and display cabinets mix. Long lasting measurements allow for evaluation of energy and efficiency related KPIs, together with operational indicators. These figures are relevant for benchmarking with traditional solutions.

This article is a translation of the article by Artuso P, Minetto S, Rossetti A, Tosato G, Marinetti S. Two years of data monitoring of all-CO₂ retail stores within the MultiPACK project. In: Proceedings of the 9th IIR Conference on the Ammonia and CO₂ Refrigeration Technologies. Ohrid: IIF/IIR, 2021. DOI: 10.18462/iir.nh3-co2.2021.0025 Published with the permission of the copyright holder.

About the authors

Paolo Artuso

Consiglio Nazionale delle Ricerche, Istituto per le Tecnologie della Costruzione

Author for correspondence.
Email: paolo.artuso@itc.cnr.it
Italy, 35127, Padova

Silvia Minetto

Consiglio Nazionale delle Ricerche, Istituto per le Tecnologie della Costruzione

Email: paolo.artuso@itc.cnr.it
Italy, 35127, Padova

Antonio Rossetti

Consiglio Nazionale delle Ricerche, Istituto per le Tecnologie della Costruzione

Email: paolo.artuso@itc.cnr.it
Italy, 35127, Padova

Giacomo Tosato

Enex Srl, Via Veneto

Email: paolo.artuso@itc.cnr.it
Italy, Padernello di Paese

Sergio Marinetti

Consiglio Nazionale delle Ricerche, Istituto per le Tecnologie della Costruzione

Email: paolo.artuso@itc.cnr.it
Italy, 35127, Padova

References

  1. Minetto S, Marinetti S, Saglia P, et al. Non-technological barriers to the diffusion of energy-efficient HVAC&R solutions in the food retail sector. International Journal of Refrigeration. 2018;86:422–434. doi: 10.1016/j.ijrefrig.2017.11.022
  2. Gullo P, Hafner A, Banasiak K, et al. Multi-Ejector Concept: A Comprehensive Review on its Latest Technological Developments. Energies. 2019;12:406. doi: 10.3390/en12030406
  3. Tosato G, Minetto S, Rossetti A, et al. Field data of CO₂ integrated refrigeration, heating and cooling systems for supermarkets. In: 14th Gustav Lorentzen Conference, Kyoto, Japan, 6–9 December 2020. IIR; 2020. doi: 10.18462/iir.gl.2020.1162
  4. Minetto S, Tosato G, Rossetti A, et al. Not-in-kind approach to remote monitoring in CO₂ refrigeration systems. In: Proceedings of the 25th IIR International Congress of Refrigeration, Montreal, Quebec, Canada. IIF/IIR; 2019. doi: 10.18462/iir.icr.2019.1266
  5. Tosato G, Minetto S, Hafner A, et al. Field assessment of the performance of a state-of-the-art CO₂ integrated system for supermarket with distributed HVAC terminals in the shopping area. In: 6th IIR ICCC Conference, Nantes, France, 26–28 August 2020. doi: 10.18462/iir.iccc.2020.292847

Supplementary files

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2. Fig. 1. Installation of the integrated unit in Trento (1a) and Rome (1b).

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3. Fig. 2. Trento site layout.

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4. Fig. 3. Rome site Layout.

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5. Fig. 4. Trend of: (4a) main heat loads of the Trento unit as a function of ambient temperature (4b) COP and operating pressure as a function of ambient temperature.

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6. Fig. 5. Trend of: (5a) main heat loads and operating temperature (5b) operating pressures and COP in the steady state intervals, during October 2020 for the Trento installation.

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7. Fig. 6. Trend of: (6a) main flowrates of the Roma unit as a function of ambient temperature (6b) COP and operating pres-sure as a function of ambient temperature.

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