Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a

The efficiency of R600a an eco-friendly refrigerant with graphene nanolubricant was investigated and compared in a domestic refrigerator with R134a refrigerant a zero Ozone Depleting Potential (ODP) but higher Global Warming Potential (GWP) refrigerant. Type K thermocouples were attached to the refr...

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Autores principales:	D. M Madyira, T. O Babarinde, P. M Mashinini
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	GWP R134a Graphene R600a COP Power consumption Fuel TP315-360
Acceso en línea:	https://doaj.org/article/cfbf89550bf34f1199860512ea0d2610
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spelling	oai:doaj.org-article:cfbf89550bf34f1199860512ea0d26102021-11-30T04:17:39ZPerformance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a2666-052010.1016/j.jfueco.2021.100034https://doaj.org/article/cfbf89550bf34f1199860512ea0d26102022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666052021000273https://doaj.org/toc/2666-0520The efficiency of R600a an eco-friendly refrigerant with graphene nanolubricant was investigated and compared in a domestic refrigerator with R134a refrigerant a zero Ozone Depleting Potential (ODP) but higher Global Warming Potential (GWP) refrigerant. Type K thermocouples were attached to the refrigerator components to track the temperature of the system. Two pressure gauges were also attached to the compressor to determine the pressure at suction and discharge of the domestic refrigerator. A digital wattmeter was used to measure the refrigerator's compressor power consumption. The results showed the evaporator air temperature and pull-down time of R600a with graphene nanolubricant were lower compared to R134a. A higher COP was achieved with R600a in graphene nanaolubricant with an increase in cooling capacity within the range of 5.2% to 14.2% and the power consumption reduced within the range of 8.8% to 26.4%. Hence, R600a/graphene nano lubricant can successfully replace R134a/POE oil in a domestic refrigerator system.D. M MadyiraT. O BabarindeP. M MashininiElsevierarticleGWPR134aGrapheneR600aCOPPower consumptionFuelTP315-360ENFuel Communications, Vol 10, Iss , Pp 100034- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	GWP R134a Graphene R600a COP Power consumption Fuel TP315-360
spellingShingle	GWP R134a Graphene R600a COP Power consumption Fuel TP315-360 D. M Madyira T. O Babarinde P. M Mashinini Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a
description	The efficiency of R600a an eco-friendly refrigerant with graphene nanolubricant was investigated and compared in a domestic refrigerator with R134a refrigerant a zero Ozone Depleting Potential (ODP) but higher Global Warming Potential (GWP) refrigerant. Type K thermocouples were attached to the refrigerator components to track the temperature of the system. Two pressure gauges were also attached to the compressor to determine the pressure at suction and discharge of the domestic refrigerator. A digital wattmeter was used to measure the refrigerator's compressor power consumption. The results showed the evaporator air temperature and pull-down time of R600a with graphene nanolubricant were lower compared to R134a. A higher COP was achieved with R600a in graphene nanaolubricant with an increase in cooling capacity within the range of 5.2% to 14.2% and the power consumption reduced within the range of 8.8% to 26.4%. Hence, R600a/graphene nano lubricant can successfully replace R134a/POE oil in a domestic refrigerator system.
format	article
author	D. M Madyira T. O Babarinde P. M Mashinini
author_facet	D. M Madyira T. O Babarinde P. M Mashinini
author_sort	D. M Madyira
title	Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a
title_short	Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a
title_full	Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a
title_fullStr	Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a
title_full_unstemmed	Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a
title_sort	performance improvement of r600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for r134a
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/cfbf89550bf34f1199860512ea0d2610
work_keys_str_mv	AT dmmadyira performanceimprovementofr600awithgraphenenanolubricantinadomesticrefrigeratorasapotentialsubstituteforr134a AT tobabarinde performanceimprovementofr600awithgraphenenanolubricantinadomesticrefrigeratorasapotentialsubstituteforr134a AT pmmashinini performanceimprovementofr600awithgraphenenanolubricantinadomesticrefrigeratorasapotentialsubstituteforr134a
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Performance improvement of R600a with graphene nanolubricant in a domestic refrigerator as a potential substitute for R134a

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