Share
IIR document
Low temperature heat storages in CO2 supermarket refrigeration systems.
Number: pap. n. 272
Author(s) : FIDORRA N., HAFNER A., MINETTO S., et al.
Summary
Refrigeration systems account for a huge share of supermarkets energy consumption. Commercial refrigeration systems with natural refrigerants are becoming more and more popular, and in particular CO2. Carbon dioxide systems are affected by efficiency and capacity reduction at high ambient temperature, due to the low critical temperature. For this reason, different options have been widely analysed and successfully implemented, such as the use of two-phase ejectors, economised cycles, flooded evaporators, etc. An additional possibility to increase the efficiency is the use of heat storages to shift the power consumption from periods of disadvantageous ambient and boundary conditions, and thus low system-efficiency, to those periods with more favourable conditions. This paper analyses the suitability of different low temperature heat storage concepts to increase the efficiency of CO2 refrigeration systems for supermarkets; in addition it evaluates their possible integration with high efficiency lay-outs intended for hot climates. Case studies of the most promising concepts comprise simulations, which use dynamic models of the storage and consider transient boundary conditions for weather and refrigeration loads.
Available documents
Format PDF
Pages: 8 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Low temperature heat storages in CO2 supermarket refrigeration systems.
- Record ID : 30016079
- Languages: English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Publication date: 2015/08/16
- DOI: http://dx.doi.org/10.18462/iir.icr.2015.0272
Links
See other articles from the proceedings (657)
See the conference proceedings
Indexing
-
A new approach for cold thermal energy storages...
- Author(s) : MANESCU R., HAFNER A., FIDORRA N., et al.
- Date : 2017/05/11
- Languages : English
- Source: 7th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, May 11-13, 2017.
- Formats : PDF
View record
-
Thermal energy storage potential in supermarkets.
- Author(s) : OHANNESSIAN R., SAWALHA S.
- Date : 2014/06/23
- Languages : English
- Source: 3rd IIR International Conference on Sustainability and the Cold Chain. Proceedings: London, UK, June 23-25, 2014
- Formats : PDF
View record
-
Review of supermarket refrigeration and heat re...
- Author(s) : KARAMPOUR M., SAWALHA S., ABDI A., et al.
- Date : 2015/04/16
- Languages : English
- Source: 6th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 16-18, 2015.
- Formats : PDF
View record
-
Experimental evaluation of ice storage inside a...
- Author(s) : MANESCU R. I., ALLOUCHE Y., HAFNER A.
- Date : 2019/04/11
- Languages : English
- Source: 8th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, Avril 11-13, 2019.
- Formats : PDF
View record
-
Load shifting by ice storage in retail CO2 syst...
- Author(s) : HEERUP C., GREEN T.
- Date : 2014/08/02
- Languages : English
- Source: 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
- Formats : PDF
View record