Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system

A single evaporator household refrigerator with a total volume of 70 L is used to evaluate multi-walled carbon nanotubes (CNTs) nanolubricant as a drop-in replacement for pure lubricant. Continuous running on the refrigerator is done with varying concentrations of multi-walled CNTs nanolubricant and...

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Autores principales:	T.O Babarinde, D.M Madyira, P.M Mashinini, G.T Marangwanda
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	GWP Multi-walled CNTs R600a COP Power consumption Fuel TP315-360
Acceso en línea:	https://doaj.org/article/fb480254ce6d463cb6055e10a58c66e0
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spelling	oai:doaj.org-article:fb480254ce6d463cb6055e10a58c66e02021-11-20T05:13:40ZPerformance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system2666-052010.1016/j.jfueco.2021.100036https://doaj.org/article/fb480254ce6d463cb6055e10a58c66e02022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666052021000297https://doaj.org/toc/2666-0520A single evaporator household refrigerator with a total volume of 70 L is used to evaluate multi-walled carbon nanotubes (CNTs) nanolubricant as a drop-in replacement for pure lubricant. Continuous running on the refrigerator is done with varying concentrations of multi-walled CNTs nanolubricant and different mass charges of R600a. The results show that using R600a with multi-walled CNTs nanolubricant concentration of 0.4 g/L to 0.6 g/L and a charge of 50 g to 60 g more result in a decreased pull downtime and evaporator temperature of -8 and -11 °C, respectively. Using 0.4 g/L multi-walled CNTs nanolubricant and 50 g of R600a, the lowest electric energy usage is attained. Higher refrigeration is attained with this combination. The pull-down time is lower and also the power consumption of the refrigerator is lower than those of pure lubricant in the refrigerator by about 25.9 %, 20.2 %, and 13.7 % for 50 g, 60 g, and 70 g, respectively, while using multi-walled CNTs nanolubricant of 04 g/L to 0.6 g/L. Finally, the proposed multi-walled CNTs nanolubricant appears to be a good choice for replacing pure lubricant in the refrigerator.T.O BabarindeD.M MadyiraP.M MashininiG.T MarangwandaElsevierarticleGWPMulti-walled CNTsR600aCOPPower consumptionFuelTP315-360ENFuel Communications, Vol 10, Iss , Pp 100036- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	GWP Multi-walled CNTs R600a COP Power consumption Fuel TP315-360
spellingShingle	GWP Multi-walled CNTs R600a COP Power consumption Fuel TP315-360 T.O Babarinde D.M Madyira P.M Mashinini G.T Marangwanda Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system
description	A single evaporator household refrigerator with a total volume of 70 L is used to evaluate multi-walled carbon nanotubes (CNTs) nanolubricant as a drop-in replacement for pure lubricant. Continuous running on the refrigerator is done with varying concentrations of multi-walled CNTs nanolubricant and different mass charges of R600a. The results show that using R600a with multi-walled CNTs nanolubricant concentration of 0.4 g/L to 0.6 g/L and a charge of 50 g to 60 g more result in a decreased pull downtime and evaporator temperature of -8 and -11 °C, respectively. Using 0.4 g/L multi-walled CNTs nanolubricant and 50 g of R600a, the lowest electric energy usage is attained. Higher refrigeration is attained with this combination. The pull-down time is lower and also the power consumption of the refrigerator is lower than those of pure lubricant in the refrigerator by about 25.9 %, 20.2 %, and 13.7 % for 50 g, 60 g, and 70 g, respectively, while using multi-walled CNTs nanolubricant of 04 g/L to 0.6 g/L. Finally, the proposed multi-walled CNTs nanolubricant appears to be a good choice for replacing pure lubricant in the refrigerator.
format	article
author	T.O Babarinde D.M Madyira P.M Mashinini G.T Marangwanda
author_facet	T.O Babarinde D.M Madyira P.M Mashinini G.T Marangwanda
author_sort	T.O Babarinde
title	Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system
title_short	Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system
title_full	Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system
title_fullStr	Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system
title_full_unstemmed	Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system
title_sort	performance of multi-walled cnts suspended with hydrocarbon refrigerant (r600a) and lubricating oil in vapour compression refrigeration system
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/fb480254ce6d463cb6055e10a58c66e0
work_keys_str_mv	AT tobabarinde performanceofmultiwalledcntssuspendedwithhydrocarbonrefrigerantr600aandlubricatingoilinvapourcompressionrefrigerationsystem AT dmmadyira performanceofmultiwalledcntssuspendedwithhydrocarbonrefrigerantr600aandlubricatingoilinvapourcompressionrefrigerationsystem AT pmmashinini performanceofmultiwalledcntssuspendedwithhydrocarbonrefrigerantr600aandlubricatingoilinvapourcompressionrefrigerationsystem AT gtmarangwanda performanceofmultiwalledcntssuspendedwithhydrocarbonrefrigerantr600aandlubricatingoilinvapourcompressionrefrigerationsystem
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Performance of multi-walled CNTs suspended with hydrocarbon refrigerant (R600a) and lubricating oil in vapour compression refrigeration system

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