Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression
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Otros documentos de la autoría: Nebot-Andres, Laura; Sánchez García-Vacas, Daniel; Calleja-Anta, Daniel; Cabello López, Ramón; Llopis, Rodrigo
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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INVESTIGACIONMetadatos
Título
Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compressionAutoría
Fecha de publicación
2021-05-05Editor
ElsevierISSN
1359-4311Cita bibliográfica
NEBOT-ANDRÉS, Laura, et al. Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression. Applied Thermal Engineering, 2021, 189: 116671Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
CO2 systems used in refrigeration are becoming more complex with the aim of improving their energy
performance. Parallel compression is one of the implemented solutions to enhance the performance of the
plants. ... [+]
CO2 systems used in refrigeration are becoming more complex with the aim of improving their energy
performance. Parallel compression is one of the implemented solutions to enhance the performance of the
plants. However, an optimization process is required to operate this system at high performance and its
operation is subjected to physical limitations in real plants.
This work presents the experimental optimization of a transcritical CO2 plant working with parallel
compression. The plant is tested at different discharge pressures and different secondary compressor speeds
in order to optimize the COP of the plant and determine the optimal conditions for three gas-cooler exit
temperatures 27.5ºC, 32.5ºC and 37.5ºC and three evaporation levels: -15.0ºC, -10.0ºC and -5.0ºC.
The optimal working conditions that can be achieved in a real plant have been determined, obtaining COP
from 1.71 to 2.63 for -5.0ºC, from 1.50 to 2.22 for -10.0ºC and from 1.25 to 1.84 for -15.0ºC. Cooling capacity
ranges from 8.94 kW to 11.34 for -5.0ºC, from 7.71 kW to 9.47 kW for -10.0ºC and from 6.22 kW to 7.76 kW
for -15.0ºC. The trends observed in theoretical results have been corroborated and the optimum gas-cooler
and intermediate pressures have been determined and discussed. [-]
Publicado en
Applied Thermal Engineering, 2021, 189: 116671Entidad financiadora
Ministerio de Educación, Cultura y Deporte | Ministerio de Ciencia y Tecnología | Jaume I University
Código del proyecto o subvención
FPU16/00151 | RTI2018-093501-B-C21 | UJI-B2019-56
Derechos de acceso
info:eu-repo/semantics/openAccess
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