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Experimental evaluation of CO2 refrigeration plant with integrated mechanical subcooling system at optimal working conditions.
Number: 1045
Author(s) : NEBOT-ANDRÉS L., SÁNCHEZ D., CABELLO R., CALLEJA-ANTA D., LLOPIS R.
Summary
CO2 subcooling systems are becoming widely studied with the purpose of enhancing energy performance of the refrigeration plants in all climates. These devices increase the specific cooling capacity and reduce the optimal discharge pressure, which improves the overall COP of the system.
The integrated mechanical subcooling has a secondary compressor and only uses carbon dioxide as refrigerant. Thanks to a subcooler, placed next to the gas-cooler, it evaporates a stream of the CO2 extracted from the subcooler outlet to subcool the CO2 at the gas-cooler exit and then recompresses the evaporated CO2 until the gas-cooler entrance.
This work experimentally analyses the behaviour of a CO2 single-stage plant with integrated mechanical subcooling evaluated at different evaporation levels and different gas-cooler outlet temperatures. The system is optimized in terms of subcooling degree and discharge pressure in order to obtain the maximum COP for each operating condition.
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Details
- Original title: Experimental evaluation of CO2 refrigeration plant with integrated mechanical subcooling system at optimal working conditions.
- Record ID : 30027910
- Languages: English
- Subject: Technology, HFCs alternatives
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Publication date: 2020/12/07
- DOI: http://dx.doi.org/10.18462/iir.gl2020.1045
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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Themes:
CO2;
Thermodynamic measurements - Keywords: CO2; Plant (equipment); Expérimentation; COP; Cooling capacity; Transcritical cycle; Subcooling; Thermodynamic property; Optimization; R744
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- Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
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- Author(s) : SÁNCHEZ D., ARANGUREN P., CASI A., CABELLO R., ASTRAIN D., ARAIZ M., LLOPIS R., CALLEJA-ANTA D., NEBOT-ANDRÉS L.
- Date : 2020/12/07
- Languages : English
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Formats : PDF
View record