Comparative evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a variable speed reciprocating compressor
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Títol
Comparative evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a variable speed reciprocating compressorAutoria
Data de publicació
2016-11-01Editor
ElsevierCita bibliogràfica
MENDOZA MIRANDA, Juan Manuel; MOTA BABILONI, Adrián; RAMÍREZ MINGUELA, J. J.; MUÑOZ CARPIO, V. D.; CARRERA RODRÍGUEZ, M.; NAVARRO ESBRÍ, Joaquín; SALAZAR HERNÁNDEZ, C. Comparative evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a variable speed reciprocating compressor. Energy (2016), v. 114, pp. 753-766Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.sciencedirect.com/science/article/pii/S036054421631163XVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
A comparative energetic evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a
variable speed compressor is carried out. A compressor model based on dimensionless numbers was
obtained using the ... [+]
A comparative energetic evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a
variable speed compressor is carried out. A compressor model based on dimensionless numbers was
obtained using the Buckingham
p
-theorem, which was validated with experimental data; showing that
the prediction error of the model is lower than
±
10% and
±
2 K for temperature. The experimental data
were obtained by testing R134a, R1234yf, R1234ze(E) and R450A for a wide range of operating condi-
tions. Results obtained with the validated model, show that the dimensionless approach provides a
similar estimation of energy parameters compared with the experimental results, such as power con-
sumption, refrigerant mass
fl
ow rate, cooling capacity, COP, discharge temperature and compressor ef-
fi
ciencies for each refrigerant tested using the dimensionless approach proposed. The comparative
evaluation of the compressor predictions shows a reduction in the cooling capacity obtained with
R1234yf, R450A and R1234ze(E), in comparison with R134a. Also, COP values for R1234yf, R450A, and
R1234ze(E) are lower than those obtained from R134a. Finally, results shows that the dimensionless
correlation compressor model can be used to predict the performance of other reciprocating compres-
sors, at similar operating conditions for a wide range of compressor rotation speed, with a reasonable
accuracy. [-]
Publicat a
Energy (2016), v. 114Drets d'accés
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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