Application of nanoparticles in domestic refrigerators

Bi, Shengshan; Song, Lin; Zhang, Lili

doi:10.1016/j.applthermaleng.2007.11.018

Cited by 258 publications

(107 citation statements)

References 5 publications

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“…Experimental studies showed that the refrigerant-based nanofluid has higher thermal conductivity than the host refrigerant [1], and the refrigeration system using refrigerant-based nanofluid has better performance than that using conventional pure refrigerant [2][3][4]. However, the aggregation and sedimentation of nanoparticles in the refrigerant-based nanofluid may reduce the stability of refrigerant-based nanofluid and limit the application of refrigerant-based nanofluid in the refrigeration system.…”

Section: Introductionmentioning

confidence: 99%

Effect of surfactant additives on nucleate pool boiling heat transfer of refrigerant-based nanofluid

Peng

Ding²,

Hu³

2011

Experimental Thermal and Fluid Science

134

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a b s t r a c tEffect of surfactant additives on nucleate pool boiling heat transfer of refrigerant-based nanofluid was investigated experimentally. Three types of surfactants including Sodium Dodecyl Sulfate (SDS), Cetyltrimethyl Ammonium Bromide (CTAB) and Sorbitan Monooleate (Span-80) were used in the experiments. The refrigerant-based nanofluid was formed from Cu nanoparticles and refrigerant R113. The test surface is horizontal with the average roughness of 1.6 lm. Test conditions include a saturation pressure of 101.3 kPa, heat fluxes from 10 to 80 kW m À2 , surfactant concentrations from 0 to 5000 ppm (parts per million by weight), and nanoparticle concentrations from 0 to 1.0 wt.%. The experimental results indicate that the presence of surfactant enhances the nucleate pool boiling heat transfer of refrigerant-based nanofluid on most conditions, but deteriorates the nucleate pool boiling heat transfer at high surfactant concentrations. The ratio of nucleate pool boiling heat transfer coefficient of refrigerant-based nanofluid with surfactant to that without surfactant (defined as surfactant enhancement ratio, SER) are in the ranges of 1.12-1.67, 0.94-1.39, and 0.85-1.29 for SDS, CTAB and Span-80, respectively, and the values of SER are in the order of SDS > CTAB > Span-80, which is opposite to the order of surfactant density values. The SER increases with the increase of surfactant concentration and then decreases, presenting the maximum values at 2000, 500 and 1000 ppm for SDS, CTAB and Span-80, respectively. At a fixed surfactant concentration, the SER increases with the decrease of nanoparticle concentration. A nucleate pool boiling heat transfer correlation for refrigerant-based nanofluid with surfactant is proposed, and it agrees with 92% of the experimental data within a deviation of ±25%.

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Section: Introductionmentioning

confidence: 99%

Effect of surfactant additives on nucleate pool boiling heat transfer of refrigerant-based nanofluid

Peng

Ding²,

Hu³

2011

Experimental Thermal and Fluid Science

134

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“…For example, Bi, et al [3] conducted experiment of mineral oil with TiO 2 nanoparticles mixtures as lubricant in domestic refrigerator. They concluded that 26.1% less energy consumption was achievable.…”

Section: Introductionmentioning

confidence: 99%

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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“…The use of nanorefrigerants enhances the solubility of the refrigerant in the lubricant and improves the stability of the lubricant [37]. Bi et al [38] have concluded that nanolubricants can return more oil to the compressor as compared to systems based on pure refrigerants. Considering the need for energy reduction along with the challenges of global warming and ozone depletion, the use of nanorefrigerants can be a potential game changer.…”

Section: Cop (Coefficient Of Performance)mentioning

confidence: 99%

“…Bi et al [38] performed an experiment on a domestic refrigerator by replacing polyolester oil with a mixture of mineral oil and TiO 2 nanoparticles. The authors conducted an energy consumption test and freezer capacity test.…”

Section: Nanolubricantsmentioning

confidence: 99%

Review of the Thermo-Physical Properties and Performance Characteristics of a Refrigeration System Using Refrigerant-Based Nanofluids

Patil

Kim

Seo³

et al. 2015

Energies

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Nanofluids are considered a promising choice for several heat transfer applications. With the increasing awareness for energy saving and efficiency improvement in various thermal systems, including refrigeration systems, there is a growing interest in the refrigerant-based nanofluids owing to their superior thermo-physical properties. Nanorefrigerants are a class of nanofluid, which consist of suspended nanoparticles in a base refrigerant. In this paper, it is intended to include many articles on refrigeration systems that use nanorefrigerants, published in the period from 2005 to 2015. Although this is an extensive review, it could not include all the papers, and only some major research works were selected. It is believed that the dependency of thermal conductivity and other properties on temperature will make the thermal systems more efficient while operating at a high temperature. The literature reviews associated with the performance characteristics of nanorefrigerants in refrigeration systems for the last 10 years have been compiled and presented in this paper. Furthermore, recent studies related to thermo-physical properties of nanorefrigerants and nanolubricants have also been summarized and reviewed in this paper.

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Application of nanoparticles in domestic refrigerators

Cited by 258 publications

References 5 publications

Effect of surfactant additives on nucleate pool boiling heat transfer of refrigerant-based nanofluid

Effect of surfactant additives on nucleate pool boiling heat transfer of refrigerant-based nanofluid

Development of nanolubricant automotive air conditioning (AAC) test rig

Review of the Thermo-Physical Properties and Performance Characteristics of a Refrigeration System Using Refrigerant-Based Nanofluids

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