Summary
The usage of CO2 in refrigeration systems recently becomes more frequent due to both being a natural refrigerant and its thermo–physical properties. In this study, the design, construction and experimental performance tests of a cascade R404A/CO2 refrigeration system at specified operating conditions are aimed. The investigated refrigeration system contains two cycles in which carbon dioxide and R404A refrigerants are used in high and low temperature cycles, respectively. The performance of the CO2 evaporator having 6 kW cooling capacity has been tested for specified standard room condition to be – 34°C according to ANSI/ASHRAE 33 (2000) standards. The temperature, pressure, mass flow rate and humidity measurements from different components of the system have been collected using a data acquisition system. Then data is processed to evaluate the overall coefficient of performance (COP) of the cascade refrigeration system.
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Details
- Original title: Performance analysis of an experimental R404A/CO2 cascade refrigeration system.
- Record ID : 30014670
- Languages: English
- Source: 6th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 16-18, 2015.
- Publication date: 2015/04/16
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Indexing
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Themes:
Compression systems;
HFCs;
CO2 - Keywords: R744; R404A; Performance; Cascade system; Expérimentation; Refrigerant; CO2
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- Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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- Date : 2007/08/21
- Languages : English
- Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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- Date : 2013/08
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- Source: Journal of Refrigeration - vol. 34 - n. 152
- Formats : PDF
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- Date : 2016/05
- Languages : French
- Source: Revue générale du Froid & du Conditionnement d'air - n. 1157
- Formats : PDF
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- Author(s) : SHARMA V., FRICKE B., BANSAL P.
- Date : 2014/08/02
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- Source: 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
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