Abstract
As a consequence of the coming into force of the EU F-Gas Regulation 517/2014, enormous technological developments have been experienced on the part of transcritical R744 supermarket refrigeration systems. These have led to the wide acceptance of multi-ejector based technologies as the most promising hydrofluorocarbon (HFC)-free solutions for commercial refrigeration sector. Approximately 50 stores have been equipped with a multi-ejector block. Furthermore, such an expedient is expected to offer significant electricity savings in other energy-demanding applications (e.g. hotels, gyms) as well, even in warm climates. This work summarizes the evolution of R744 multi-ejector enhanced parallel compression system architectures for supermarket applications. Additionally, their technological aspects as well as the potential energy benefits along with some relevant field/experimental measurements are also presented. Furthermore, the experience gained in the use of the multi-ejector concept in transcritical R744 heat pump technologies is summed up. At last, the persistent challenges needing to be faced are revealed.
| Original language | English |
|---|---|
| Title of host publication | 13th IIR Gustav Lorentzen Conference on Natural Refrigerants : Natural Refrigerant Solutions for Warm Climate Countries, Proceedings |
| Number of pages | 11 |
| Publisher | International Institute of Refrigeration |
| Publication date | 2018 |
| Pages | 1042-1052 |
| ISBN (Electronic) | 9782362150265 |
| DOIs | |
| Publication status | Published - 2018 |
| Event | 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries - Valencia, Spain Duration: 18. Jun 2018 → 20. Jun 2018 |
Conference
| Conference | 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries |
|---|---|
| Country/Territory | Spain |
| City | Valencia |
| Period | 18/06/2018 → 20/06/2018 |
| Sponsor | Dorin Innovation, Epta, et al., HB Products, LU-VE Group, Vaillant |
| Series | Refrigeration Science and Technology |
|---|---|
| Volume | 2018-June |
| ISSN | 0151-1637 |
Bibliographical note
Funding Information:The research leading to these results has received funding from the European Union under the programme H2020-EU.3.3.1. - Reducing energy consumption and carbon footprint by smart and sustainable use (Grant Agreement number: 723137).
Publisher Copyright:
© 2018 International Institute of Refrigeration. All rights reserved.
Keywords
- Ejector
- Heat pump
- R744
- Supermarket
- Transcritical CO2 System