Performance of a domestic refrigerator using TiO2-R600a nano-refrigerant as working fluid

Bi, Shengshan; Guo, Kai; Liu, Zhigang; Wu, Jiangtao

doi:10.1016/j.enconman.2010.07.052

Cited by 281 publications

(96 citation statements)

References 7 publications

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“…The same authors also conducted experimental work for performance of a domestic refrigerator using TiO 2 /R600a nanorefrigerant as working fluid. The performance of refrigerator showed 9.6% less energy used [4]. Wang, et al [5] mixed NiFe 2 O 4 in mineral-based nanorefrigeration oil (MNRO).…”

Section: Introductionmentioning

confidence: 99%

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Development of nanolubricant automotive air conditioning (AAC) test rig

et al. 2016

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Abstract. Nanolubricant been introduced in compressor might improve the performance of automotive air conditioning system. Prior testing of the nanolubricant enhancement performance, an automotive air conditioning (AAC) system test rig base on compact car has to be developed; therefore this paper presented the development process of AAC test rig. There are 15 thermocouples, 2 pressure gauges and power analyzer were assembled on the system in order to analyse its performance. The experiment was conducted with four different charged of refrigerant. The charging was based on initial weight charged. At each quantity of refrigerant charge, performance of the AAC system was evaluated by determining three important parameters which is cooling capacity, compressor work and coefficient of performance (COP). The maximum average COP is achieved at 900 RPM is 7.07. The average and maximum COP enhancement of 7.07 % and 13.34 % were achieved by applying SiO 2 nanolubricant inside the compressor.

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Section: Introductionmentioning

confidence: 99%

“…The uses of nanoparticle in refrigerant/lubricant mixture in improving coefficient performance/cooling capacity in refrigeration system were done by few researchers [4][5][6][7][8][9][10]. For example, Bi, et al [3] conducted experiment of mineral oil with TiO 2 nanoparticles mixtures as lubricant in domestic refrigerator.…”

Section: Introductionmentioning

confidence: 99%

Development of nanolubricant automotive air conditioning (AAC) test rig

et al. 2016

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“…Nanolubricant intended to be put in compressor might improve the performance of automotive air conditioning system. Bi et al [1] concluded three main bonus obtained when nanoparticles were emlpoyed in refrigerant/lubricant; (1) adding nanoparticle could enhance the solvability between the lubricant and refrigerant. (2) Thermal conductivity and heat transfer characteristics of the refrigerant could be increased.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity enhancement of Al₂O₃and SiO₂nanolubricants for application in automotive air conditioning (AAC) system

et al. 2016

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Abstract. Nanolubricant been introduced in compressor might improve the performance of automotive air conditioning system. Prior testing of the nanolubricant enhancement performance, thermal conductivity of Al 2 O 3 /PAG and SiO 2 /PAG nanolubricants has to be investigated and compared. Al 2 O 3 and SiO 2 nanoparticles first been dispersed in Polyalkylene Glycol (PAG) for different volume concentrations. KD2 Pro was used in determining the thermal conductivity of the nanolubricant. The experimental results showed that the thermal conductivity of the Al 2 O 3 /PAG and SiO 2 /PAG nanolubricants increased by volume concentration but decreased by temperature. The highest thermal conductivity was observed to be 0.153 W.(m K)-1 and enhancement of 1.04 times higher than the base lubricant for Al 2 O 3 with 1.0 volume concentration. Finally regression equations were developed in order to estimate the thermal conductivity for these nanolubricants.

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“…Bi et al [2] studied experimentally the performance of a domestic refrigerator using TiO 2 -R600a nano-refrigerant as working fluid. Thermal conductivity and heat transfer characteristics were increasing when using the nanoparticle, the concentration when suspended in the R600a is 0.1 and 0.5 g/L and the average diameter is 50 nm.…”

Section: Introductionmentioning

confidence: 99%

Enhancement on the Performance of Refrigeration System Using the Nano-Refrigerant

Mahdi¹,

Theeb²,

Saed³

2017

JEPE

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Abstract:The purpose of the present experimental work is to investigate the performance (1 ton) refrigeration system using nano-refrigerant. Nano-refrigerant is alumina (ɣ-Al 2 O 3 ) nanopartcal with size (20-30) nm is dispersed into R-134a with volume fraction 0.01% and 0.02%. The experimental test rig consists of horizontal double tube counter flow heat exchanger fabricated of copper. The nano-refrigerant is evaporated inside the inner tube because of the heat gain from hot water passing in the annulus surrounding the inner tube. The experimental results indicate, when increasing the volume concentration of Al 2 O 3 refrigerant by 0.01% and 0.02%, the heat transfer coefficient increases by 0.54% to 1.1%. The thermal conductivity increases by 11.5% and 14.2%, respectively, while the coefficient of performance increases by 3.33% to 12%, respectively. The heat transfer rate in the refrigeration side is enhancement about 6.7% to 21.4% compared with conventional refrigerant, and the power consumption by compressor is decreased by nearly 1.6% and 3.3%, respectively.

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Performance of a domestic refrigerator using TiO2-R600a nano-refrigerant as working fluid

Cited by 281 publications

References 7 publications

Development of nanolubricant automotive air conditioning (AAC) test rig

Development of nanolubricant automotive air conditioning (AAC) test rig

Thermal conductivity enhancement of Al₂O₃and SiO₂nanolubricants for application in automotive air conditioning (AAC) system

Enhancement on the Performance of Refrigeration System Using the Nano-Refrigerant

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Performance of a domestic refrigerator using TiO2-R600a nano-refrigerant as working fluid

Cited by 281 publications

References 7 publications

Development of nanolubricant automotive air conditioning (AAC) test rig

Development of nanolubricant automotive air conditioning (AAC) test rig

Thermal conductivity enhancement of Al2O3and SiO2nanolubricants for application in automotive air conditioning (AAC) system

Enhancement on the Performance of Refrigeration System Using the Nano-Refrigerant

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Thermal conductivity enhancement of Al₂O₃and SiO₂nanolubricants for application in automotive air conditioning (AAC) system