Experimental studies on a vapour compression system using nanorefrigerants

Subramani, N; Prakash, M. Jose

doi:10.4314/ijest.v3i9.8

Cited by 137 publications

(66 citation statements)

References 12 publications

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“…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%

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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%

“…They found that the power consumption decreased by 2.4% and the COP was enhanced up to 4.4%. Subramani and Prakash [7] dispersed Al 2 O 3 in MO. It is observed that by using Al 2 O 3 /R134a/MO nanorefrigerant, the power consumption was reduced by 25 % and up to 1.53 enhancement factor in the evaporator was attained.…”

Section: Introductionmentioning

confidence: 99%

Development of nanolubricant automotive air conditioning (AAC) test rig

et al. 2016

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“…For the nonsuperheating/subcooling case, the variation of COP, the compressor work per unit mass ( comp ), the evaporator heat per unit mass ( ), and the condenser heat per unit mass ( ) with condensation temperature ( ) are presented in Figures 2, 3, and 4 at evaporation temperatures of 0 ∘ C, −10 ∘ C, and −20 ∘ C, respectively. At 5 ∘ C in the superheating/subcooling case, the variation of COP, the compressor work per unit mass ( comp ), the evaporator [14] for the validation process of current study. heat per unit mass ( ), and the condenser heat per unit mass ( ) with the condensation temperature ( ) are presented in Figures 5, 6, and 7 according to the evaporation temperatures of 0 ∘ C, −10 ∘ C, and −20 ∘ C, respectively.…”

Section: Resultsmentioning

confidence: 99%

A Theoretical Comparative Study on Nanorefrigerant Performance in a Single-Stage Vapor-Compression Refrigeration Cycle

Aktaş

Dalkılıç

Çelen

et al. 2014

Advances in Mechanical Engineering

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The topic of nanofluid heat transfer is certainly of interest to the heat transfer community. Nanorefrigerants are a type of nanofluids that are mixtures of nanoparticles and pure refrigerants. This paper focuses on five different nanorefrigerants with Al 2 O 3 nanoparticles and their pure fluids: R12, R134a, R430a, R436a, and R600a. The coefficient of performance (COP) and compressor work for various evaporation and condensation temperatures are investigated. A method is developed to estimate the performance characteristics of nanorefrigerants in the refrigerant cycles for the nonsuperheating/subcooling case and superheating/subcooling case. The enthalpy of nanorefrigerants is obtained through the density. The validation process of the proposed method was accomplished with the available data in the literature. The results indicate that COP is enhanced by adding nanoparticles to the pure refrigerant and maximum values obtained using the R600a/Al 2 O 3 mixture.

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“…T fd (˝C) Subramani et al [44] conducted experimental studies on an R134a refrigeration system by introducing a mixture of mineral oil and alumina nanoparticles instead of POE (polyolester) oil. The authors found that the freezing capacity was higher, and power consumption reduced by 25%.…”

Section: Proportion (G/l)mentioning

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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Experimental studies on a vapour compression system using nanorefrigerants

Cited by 137 publications

References 12 publications

Development of nanolubricant automotive air conditioning (AAC) test rig

Development of nanolubricant automotive air conditioning (AAC) test rig

A Theoretical Comparative Study on Nanorefrigerant Performance in a Single-Stage Vapor-Compression Refrigeration Cycle

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

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