R450A and R513A as lower GWP mixtures for high ambient temperature countries: Experimental comparison with R134a
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Título
R450A and R513A as lower GWP mixtures for high ambient temperature countries: Experimental comparison with R134aFecha de publicación
2019-01-01Editor
ElsevierCita bibliográfica
MAKHNATCH, Pavel; MOTA-BABILONI, Adrián; LÓPEZ-BELCHÍ, Alejandro; KHODABANDEH, Rahmatollah (2019). R450A and R513A as lower GWP mixtures for high ambient temperature countries: Experimental comparison with R134a. Energy, v. 166, p. 223-235Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0360544218317559Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In recognition of the impact of the refrigeration sector on climate change, global commitments are achieved to replace hydrofluorocarbon substances with more planet-friendly alternatives. In this regard, countries ... [+]
In recognition of the impact of the refrigeration sector on climate change, global commitments are achieved to replace hydrofluorocarbon substances with more planet-friendly alternatives. In this regard, countries with high ambient temperatures (HAT) face additional problems in identifying suitable alternatives due to the impact of such temperatures on energy performance in vapor compression systems. This paper presents an experimental analysis using R134a and two lower global warming potential (GWP) mixtures in a small capacity vapor compression refrigeration system for HAT environments. The range of evaporating and condensing conditions was selected to simulate a refrigeration system working at HAT conditions. The experimental operating results show that although R450A values are acceptable, R513A shows better adaptation to the refrigeration system in terms of pressure ratio, discharge temperature, and mass flow rate. Then, attending to experimental energetic results, R450A energy performance (quantified by COP) and cooling capacity are lower than R513A and R134a. TEWI analysis of a small refrigeration unit shows CO2 equivalent emission saving when using R450A in the different condensation conditions. However, taking into account the variation of cooling capacity, R513A system results in the lowest TEWI when normalizing per unit of delivered cooling capacity. [-]
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Energy (2019), v. 166Proyecto de investigación
1) Spanish State Research Agency through the “Juan de la Cierva - Formación 2016” postdoctoral grant (FJCI-2016-28324); 2) “Fundación Séneca” through the regional program “ Jiménez de la Espada” mobility grant (ref: 20135/EE/17).Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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