Influence of the superheat associated to a semihermetic compressor of a transcritical CO<sub>2</sub> refrigeration plant
Impacto
Scholar |
Otros documentos de la autoría: Sánchez García-Vacas, Daniel; Torrella Alcaraz, Enrique; 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
comunitat-uji-handle4:
INVESTIGACIONEste recurso está restringido
http://dx.doi.org/10.1016/j.applthermaleng.2009.09.008 |
Metadatos
Título
Influence of the superheat associated to a semihermetic compressor of a transcritical CO<sub>2</sub> refrigeration plantAutoría
Fecha de publicación
2010Editor
ElsevierISSN
13594311Cita bibliográfica
Applied Thermal Engineering, 30, 4, p. 302-309Tipo de documento
info:eu-repo/semantics/articlePalabras clave / Materias
Resumen
This work evaluates, from an energetic point of view, the effects of the superheat caused in the refrigerant by the electric motor cooling (SH<sub>SC</sub>) in a semihermetic compressor installed in an experimental ... [+]
This work evaluates, from an energetic point of view, the effects of the superheat caused in the refrigerant by the electric motor cooling (SH<sub>SC</sub>) in a semihermetic compressor installed in an experimental refrigerating plant, which operates with CO<sub>2</sub> as the working fluid in transcritical conditions. The analysis is based on 84 experimental tests which cover a wide range of operating conditions of the plant: three evaporating levels (0, -10, -17 °C) at four compressor speeds (1150, 1300, 1450, 1600 rpm) over a range of discharge pressures from 74.2 to 104.9 bar. The paper presents the empirical model of the compressor and its validation with the experimental measurements, which allows the behaviour of the facility to be calculated with prediction errors below 5%. With the model, the effect of the SH<sub>SC</sub> on the energy efficiency of the plant is evaluated by comparing the actual performance of the facility with the simulated behaviour of the plant without considering the SH<sub>SC</sub> produced by the semihermetic compressor. The maximum estimated reductions, due to the SH<sub>SC</sub> of the compressor, are a 20% in cooling capacity and a 23% in COP. © 2009 Elsevier Ltd. All rights reserved. [-]
Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/closedAccess
info:eu-repo/semantics/closedAccess
Aparece en las colecciones
- EMC_Articles [829]