EXPERIMENTAL STUDY OF LPG AND R134a REFRIGERANTS IN VAPOR COMPRESSION REFRIGERATION

Babarinde, T. O.; Ohunakin, Olayinka S.; Adelekan, Damola S.; Aasa, S. A.; Oyedepo, Sunday Olayinka

doi:10.1615/interjenercleanenv.2016015644

Cited by 20 publications

(5 citation statements)

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“…The evaporator was positioned within the refrigerating space, from the top to the back of the system. The working fluid responsible for heat exchange process and also known as the life force of a cooling system is the refrigerant [2] , [3] , [4] . The refrigerant flowing through the system was Isobutane (R600a) charged at a pressure of 2.34 bar.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the no-load performance analysis of a tomato postharvest storage system

et al. 2017

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In this present investigation, an original and detailed empirical data on the transfer of heat in a tomato postharvest storage system was presented. No-load tests were performed for a period of 96 h. The heat distribution at different locations, namely the top, middle and bottom of the system was acquired, at a time interval of 30 min for the test period. The humidity inside the system was taken into consideration. Thus, No-load tests with or without introduction of humidity were carried out and data showing the effect of a rise in humidity level, on temperature distribution were acquired. The temperatures at the external mechanical cooling components were acquired and could be used for showing the performance analysis of the storage system.

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on the no-load performance analysis of a tomato postharvest storage system

et al. 2017

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“…In a related work, Akash and Said (2003) reported that LPG (composed of R290, R600, and R600a, in the ratio of 30:55:15, by mass) gave better energy performance when compared to R12. Furthermore, Fatouh and Kafafy (2006), Ahamed et al (2012), Srinivas et al (2014), Babarinde et al (2015) and Adelekan et al (2017) , also reported that LPG gave similar better energy performances in domestic refrigerator systems, when compared to R134a. Furthermore, a new concept whereby nanoparticles are added as additives into refrigerants to obtain a homogenous mixture often referred to as "nano refrigerant" is gradually gaining wide recognition.…”

Section: Introductionmentioning

confidence: 93%

Energetic and exergetic analysis of a domestic refrigerator system with LPG as a replacement for R134a refrigerant, using POE lubricant and mineral oil based TiO2-, SiO2- and Al2O3-lubricants

Gill¹,

Singh²,

Ohunakin

et al. 2018

International Journal of Refrigeration

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This paper experimentally investigated energetic and exergetic performance analysis of a domestic refrigerator using R134a and LPG refrigerants with different lubricants (polyol-ester (POE), mineral oil (MO), and TiO 2 , SiO 2 , Al 2 O 3 nanoparticles dispersed in mineral oil).The energetic and exergetic performance analysis of the domestic refrigerator were investigated with test parameters including compressor power consumption, cooling capacity, coefficient of performance (COP), discharge temperature, irreversibility in the components, total irreversibility and second law efficiency. Findings showed that the lowest compressor power consumption and total irreversibility were observed in refrigerator with 40 g charge of LPG/TiO 2 -MO lubricant (0.2 g/L of TiO 2 ); these values of compressor power consumption and total irreversibility were 15.87% and 31.69%, respectively, lower than for R134a/POE lubricant. In addition, the domestic refrigerator using LPG refrigerant at 40 g charge with TiO 2 -MO (0.2 g/L TiO 2 ) lubricant, had the highest COP and second law efficiency among the selected nano-lubricants. These values of COP and second law efficiency were 56.32% and 47.06%, respectively, higher than that of R134a/POE. Futhermore, compressor discharge temperature of the domestic refrigerator with 40 g charge of LPG/TiO 2 -MO lubricant (0.2 g/L of TiO 2 ) was found to be lower than that of R134a/POE. Hence, extended compressor life may be expected with the adoption of TiO 2 -Mineral oil lubricant. It can be concluded that based on energetic and exergetic performance analysis, the domestic refrigerator using the 40 g charge of LPG/TiO 2 -MO (0.2 g/L TiO 2 ) performed better than R134a/POE.

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“…The only problem associated with hydrocarbon refrigerants is their flammability. But, a maximum mass charge of 150 g has been endorsed for use in domestic refrigerators and for small commercial refrigerator systems [8][9][10]. Due to flammability EN378-2008 [11] recommend Eq.…”

Section: Hydrocarbon Refrigerantsmentioning

confidence: 99%

“…In 1995 the mass production of household refrigerators using R600a as the working fluid was first started in Germany and spread across the whole of Europe and other parts of the world except the United States where the safety regulations do not permit its production. R600a is energy-efficient according to the past and recent research by some refrigeration energy researchers [4,7,10,[13][14][15]. R600a requires between 40 and 60% of the required mass charge amount of R12 and R134a for effective performance in refrigeration systems, therefore it consumes lesser energy compared to R12 and R134a in vapour compression systems.…”

Section: Hydrocarbon Refrigerantsmentioning

confidence: 99%

“…The outcome result revealed a 14% and 7% reduction in the power consumption at an optimum charge of R435A and R600a respectively in the system. Babarinde et al [10] conducted an experiment with a mixture of R290 and R600 to retrofit R134a in vapour compression system considering varied mass charge of mixture of R290/R600 and a modified capillary length, the result showed a mixture of R290 and R600 performed better in the system in comparison with R134a with the highest COP of 9.5% and a decrease in power consumption of 12%. In a similar study Joudi et al [27] experimented R600, R600a and a blend of R290, R600 and R600a in a VCRS using R134a as the based line of the experiment.…”

Section: Experimental Studies Of Hydrocarbon Refrigerants In Vapour Cmentioning

confidence: 99%

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The Use of Hydrocarbon Refrigerants in Combating Ozone Depletion and Global Warming: A Review

Babarinde

Akinlabi

Madyira

2020

Lecture Notes in Mechanical Engineering

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Vapour compression systems are associated with high energy demand and contribute to ozone depletion and global warming due to halogenated refrigerants used in them which are unfriendly to the environment. Hydrocarbon refrigerants have been proposed as a substitute to halogenated refrigerants due to their zero ozone depletion potentials, very low global warming potentials, and lower energy demand for effective operations. In this review, the terms ozone depletion and global warming are explained and the causes. Also, the use of hydrocarbon refrigerants as an ideal solution to energy security and environmental challenges accompanied by vapour compression systems are discussed. Lastly, this paper revealed that hydrocarbon refrigerants are long term replacement for halogenated refrigerants in a vapour compression system.

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EXPERIMENTAL STUDY OF LPG AND R134a REFRIGERANTS IN VAPOR COMPRESSION REFRIGERATION

Abstract: Natural refrigerants, such as hydrocarbons, have been renewed in recent

Cited by 20 publications

References 0 publications

Data on the no-load performance analysis of a tomato postharvest storage system

Data on the no-load performance analysis of a tomato postharvest storage system

Energetic and exergetic analysis of a domestic refrigerator system with LPG as a replacement for R134a refrigerant, using POE lubricant and mineral oil based TiO2-, SiO2- and Al2O3-lubricants

The Use of Hydrocarbon Refrigerants in Combating Ozone Depletion and Global Warming: A Review

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