Alternative blends of CO2 for transcritical refrigeration systems. Experimental approach and energy analysis
Ver/ Abrir
Impacto
Scholar |
Otros documentos de la autoría: Sánchez García-Vacas, Daniel; Vidan-Falomir, Francisco; Nebot-Andres, Laura; Llopis, Rodrigo; Cabello López, Ramón
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
comunitat-uji-handle4:
INVESTIGACIONMetadatos
Título
Alternative blends of CO2 for transcritical refrigeration systems. Experimental approach and energy analysisAutoría
Fecha de publicación
2023-02-10Editor
ElsevierCita bibliográfica
SÁNCHEZ, D., et al. Alternative blends of CO2 for transcritical refrigeration systems. Experimental approach and energy analysis. Energy Conversion and Management, 2023, vol. 279, p. 116690.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
As a natural refrigerant, Carbon Dioxide (CO2) has been extended in almost all refrigeration fields due to its environmental friendliness, high availability, and high technological development in the main components ... [+]
As a natural refrigerant, Carbon Dioxide (CO2) has been extended in almost all refrigeration fields due to its environmental friendliness, high availability, and high technological development in the main components of the cycle. However, despite the benefits, CO2 is limited to high-capacity applications due to the cost of components and the complex cycle arrangements to overcome the low coefficient of performance (COP) at high ambient temperatures. A simple but effective method to solve this issue involves mixing CO2 with other refrigerants obtaining a new refrigerant mixture with higher critical points, lower working pressures and low global warming potential (GWP). Depending on the mixture percentage, the mixture flammability can be suppressed, and the performance of the refrigeration plant can be increased.
Building on this, this work determines theoretically different CO2based zeotropic blends as an alternative to pure CO2 with the restrictions of non-flammability, GWP below 150 and higher COP than pure CO2. The results suggest two blends of CO2/R1270 and CO2/R32 that have been prepared and energetically tested in a vertical display cooler using pure CO2 as a reference. The results revealed that CO2-blends reduce energy consumption by up to 17.2 % at the ambient temperature of 25 °C and up to 12.2 % at 30 °C. Moreover, the results with CO2-blends were closest to those obtained with pure R1270 and better than R134a under the same operating conditions. [-]
Publicado en
Energy Conversion and Management, 2023, vol. 279Entidad financiadora
Ministerio de Ciencia, Innovación y Universidades (Spain) | MCIN/AEI/10.13039/501100011033 | European Union - NextGenerationEU “NextGenerationEU”/PRTR | Universitat Jaume I
Código del proyecto o subvención
PID2021-126926OB-C21 | PRE2019-091617 | TED2021-130162B-I00 | UJI-B2021-10
Derechos de acceso
info:eu-repo/semantics/openAccess
Aparece en las colecciones
- EMC_Articles [813]