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Theoretical evaluation of transcritical CO2 systems in supermarket refrigeration. I. Modelling, simulation and optimization of two system solutions.
Author(s) : SAWALHA S.
Type of article: Article, IJR article
Summary
Using CO2 transcritical system solutions in supermarket refrigeration is gaining interest with several installations already running in different European countries. Using a computer simulation model, this study investigates the performance of two main system solutions: centralized with accumulation tank at the medium temperature level and parallel with two separate circuits for low and medium temperature levels. Both system solutions are presented and the simulation model is described in details. Calculations have been performed to design the systems and optimize their performances where basic layout and size of each solution have been defined. For ambient temperature range of 10-40°C, the reference centralized system solution shows higher COP of about 4-21% than the reference parallel solution. Using two-stage compression in the centralized system solution instead of single stage will result in total COP which is about 5-22% higher than that of the reference centralized system and 13-17% higher than that of the improved two-stage parallel system. The two-stage centralized system solution gives the highest COP for the selected ambient temperature range. See also this Bulletin, reference 2008-0687.
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Details
- Original title: Theoretical evaluation of transcritical CO2 systems in supermarket refrigeration. I. Modelling, simulation and optimization of two system solutions.
- Record ID : 2008-0686
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 3
- Publication date: 2008/05
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Theoretical evaluation of transcritical CO2 sys...
- Author(s) : SAWALHA S.
- Date : 2008/05
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 3
- Formats : PDF
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