Experimental performance of LPG refrigerant charges with varied concentration of TiO 2 nano-lubricants in a domestic refrigerator

Adelekan, Damola S.; Ohunakin, Olayinka S.; Babarinde, T. O.; Odunfa, Moradeyo K.; Leramo, R.O.; Oyedepo, Sunday Olayinka; Badejo, Damilola C.

doi:10.1016/j.csite.2016.12.002

Cited by 79 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

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

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The author reported 17% improvement in COP and 11% reduction compressor energy consumption using nanoparticles with R12. Adelekan et al [41] observed better COP in refrigerant cycle using TiO 2 /MO nanolubricant instead of R134a/MO.…”

Section: Studies Related To Tiomentioning

confidence: 99%

“…It was observed that using Cu nanoparticles with average size of 20 nm strongly improved the heat transfer performance up to 23.8% as compared to other particles sizes of 50 and 80 nm. Akhavan-Behabadi et al [32] found 83% increment in heat transfer rate with 1.5% mass fraction of CuO nanoparticles dispersed in R600a/polyester oil condensed inside the smooth horizontal tube (Figures 3 and 4) [29,41,46].…”

Section: Studies Related To Cuomentioning

confidence: 99%

Effect of Nanoparticles on Performance Characteristics of Refrigeration Cycle

Kumar¹

2020

Low-Temperature Technologies

View full text Add to dashboard Cite

Since few years, researchers are introduced nanorefrigerant in the recent development of refrigeration systems. This chapter briefly summarizes the behavior of different nanoparticles in vapor compression refrigeration cycle. The nanoparticles' infusion in refrigeration cycle affects the viscous behavior of the refrigerant. It is found that very limited studies have been done on viscosity characteristics of nanolubricants, but few reports states that viscosity increases with nanoparticles additive which improves the tribology of compressor. But inversely, the increment of viscosity promotes to the possible pressure drop in the system which eventually drops the cycle performance. The optimum contribution of nanorefrigerant with high thermal conductivity and low viscosity is the success key of system performance with nanoparticles. However, it is found that the contribution of nanoparticles on the basis of physical phenomena that are affecting the vapor compression cycle is limited in the literature. This chapter aims to make a review on the mechanism of improving vapor compression cycle by using nanorefrigerants.

show abstract

“…They also concluded that this technology will be environmentally friendly by reducing greenhouse emission, particularly in terms of carbon dioxide. Adelekan et al [13] presented an experimental analysis of different mass charges of LPG (40 g, 50 g, 60 g, and 70 g) mixed with different TiO 2 nanoparticles/mineral oil concentrations (0.2 g L −1 , 0.4 g L −1 , and 0.6 g L −1 ) in R-134a-based refrigerant compressor of a domestic refrigerator. They concluded that nanorefrigerant mixture worked smoothly and efficiently without doing any change in capillary tube length, but require appropriate optimization.…”

Section: Introductionmentioning

confidence: 99%

Performance investigation of ice plant working with R134a and different concentrations of POE/TiO2 nanolubricant using experimental method

Chauhan

Kumar

Rajput

2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

This paper experimentally investigates the performance of an ice plant test rig for varied volume concentrations (0.1%, 0.2% and 0.3%) of TiO 2 nanoparticles dispersed in polyol ester (POE) lubricating oil using R134a as a working refrigerant. The performance of the test rig is investigated on the basis of parameters including brine temperature in the brine tank (pulldown time), pressure ratio, compressor power input, freezing capacity, COP, thermal conductivity, viscosity, and density at suction and discharge end of compressor. Analysis is based on temperature and pressure readings taken using suitable thermocouples and gauges fitted to the test rig. Refrigerant properties are acquired using REFPROP 9.1 software development by NIST. The concentration of 0.2% is found as the optimum since the lowest compressor power input and the highest COP are achieved at this concentration. The result indicates that the mixture of R134a/nanolubricant (POE/TiO 2) worked safely and efficiently in the rig, and the performance is found better than operated with mixture of R134a/lubricant (POE), with 15.8% less power consumption in the compressor and 29.1% increase in the COP at 0.2% volume concentration of TiO 2 nanoparticles. Moreover, thermal conductivity, viscosity, and density of the mixture of R134a/nanolubricant (POE/TiO 2) are found higher compared to mixture of R134a/lubricant (POE) and are increasing with increasing the TiO 2 concentration.

show abstract

Experimental performance of LPG refrigerant charges with varied concentration of TiO 2 nano-lubricants in a domestic refrigerator

Cited by 79 publications

References 10 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

Effect of Nanoparticles on Performance Characteristics of Refrigeration Cycle

Performance investigation of ice plant working with R134a and different concentrations of POE/TiO2 nanolubricant using experimental method

Contact Info

Product

Resources

About