Energy performance of integrated CO₂ refrigeration, heating and cooling system in real applications

Abstract

Conveni-pack, a Daikin product, is an integrated refrigeration, cooling and heating system that recovers heat from the refrigeration to heat up the space. It additionally functions as a heatpump when additional heating is needed in winter and provides cooling in summer. In 2019, Daikin launches a new model that uses CO₂ as refrigerant, next to the existing R-410A model. The CO₂ version has comparable COP to the R-410A model so that TEWI is considerably lower and therefore an excellent product to reduce CO₂ emissions and meet the requirements set by the European F-gas regulation. Daikin Europe N.V. has engaged in an EU funded project (LIFE) in which the reduction of the CO₂ emissions using an integrated system in real shops across Europe and the impact of the raw materials used will be investigated. During 2020–2022, DENV will monitor 20 systems in real applications and research the potential of thermal storage to further reduce emissions.

This article is  a  translation  of  the  article  by  Karve N, Van de Velde K, Vandaele S. Energy performance of integrated CO2 refrigeration, heating and cooling system in real applications. In: Proceedings of the 9th IIR Conference on the Ammonia and CO2 Refrigeration Technologies. Ohrid: IIF/IIR, 2021.

DOI: 10.18462/iir-nh3-co2.2021.0029 Published with the permission of the copyright holder.

Keywords

refrigeration / carbon dioxide / TEWI / CO₂ emissions / thermal storage

References

[1] European Commission Refulation (EU) No 517/2014 of the European Parilament and of the Council of 16 April 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No 842/2006. Official Journal of the European Union. 2014.

[2] European Commission Refulation (EU) No 517/2014 of the European Parilament and of the Council of 16 April 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No 842/2006 // Official Journal of the European Union. 2014.

[3] Technical Committee CEN/TC 113. Heat pumps and air conditioning units. European Standards EN 13215. European Committee for Standardization, 2016.

[4] North American Sustainable Refrigeration Council. What exactly is TEWI, anyway? [internet]. [Accessed 15 December 2020] Available from: https://nasrc.org/articles1/2017/1/23/what-exactly-is-tewi-anyway.

[5] Technical Committee CEN/TC 113. Heat pumps and air conditioning units. European Standard EN 14825. European Committee for Standardization, 2018.

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