Open Access
Performance Analysis of Sio2/PAG Nanolubricantin Automotive Air Conditioning System
TLDR
In this article, the performance of an automotive air conditioning system (AAC) was evaluated by determining the heat absorb, compressor work and coefficient of performance (COP), and the results found that the maximum increase and the average COP enhancement for SiO2/PAG nanolubricants are 24% and 10.5%, respectively.Abstract:
The performance of an automotive air conditioning system (AAC) needs to be enhanced in order to minimize its environment impact and reduce global fuel consumption. Implementing nanofluid technology using nanolubricants inside compressors can improve its performance. Therefore, this paper presents the development of an AAC system performance test rig. The SiO2/PAG nanolubricant was prepared in a prior performance experiment and the stability of the colloidal was also attained. The experiment was conducted with initial refrigerant charge ranging from 95 to 125 gram and compressor speeds of 900 to 2100 RPM. The performance of the AAC system was evaluated by determining the heat absorb, compressor work and coefficient of performance (COP). The results found that the maximum increase and the average COP enhancement for SiO2/PAG nanolubricants are 24% and 10.5%, respectively. It can be concluded that the COP was highest at 0.05% volume concentration for all compressor speeds.read more
Citations
More filters
Journal ArticleDOI
Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
TL;DR: In this article, the performance of a single component nanofluid with 1.0% volume concentration of a base fluid of water (W) and an ethylene glycol (EG) mixture with 60:40-vol ratio was investigated.
Journal ArticleDOI
Improving the performance of refrigeration systems by using nanofluids: A comprehensive review
TL;DR: In this article, a review summarizes the researches on preparation and characterization of nanofluids, various thermophysical and electrical properties (density, heat capacity, viscosity, thermal conductivities, surface tension, electrical conductivity, freezing characteristics, etc.).
Journal ArticleDOI
Experimental investigation of nanoparticle mixture ratios on TiO2–SiO2 nanofluids heat transfer performance under turbulent flow
TL;DR: In this article, the authors investigated the heat transfer performance of TiO2-SiO2 nanofluids for various nanoparticle mixture ratios dispersed in a water/ethylene glycol (W/EG) mixture.
Journal ArticleDOI
Thermo-physical properties of Al2O3-SiO2/PAG composite nanolubricant for refrigeration system
TL;DR: In this article, thermal conductivity and viscosity of the Al2O3-SiO2/PAG composite nanolubricants for 0.02 to 0.1% volume concentrations at a temperature range of 303 to 353 K were investigated.
Journal ArticleDOI
Nanolubricant additives: A review
TL;DR: In this article, a review summarizes the categories of nanolubricant additives and illustrates the tribological properties of these additives, which can be divided into three types: nanometal-based, nanocarbon-based and nanocomposite-based.
References
More filters
Journal ArticleDOI
A review on nanofluids: preparation, stability mechanisms, and applications
Wei Yu,Huaqing Xie +1 more
TL;DR: In this article, the authors summarized the recent progress on the study of nanofluids, such as the preparation methods, the evaluation methods for the stability of nanometrics, and the ways to enhance the stability for nanofl fluids, and presented the broad range of current and future applications in various fields including energy and mechanical and biomedical fields.
Journal ArticleDOI
A fractal model for predicting the effective thermal conductivity of liquid with suspension of nanoparticles
TL;DR: Based on the effective medium approximation and the fractal theory for the description of nanoparticle cluster and its radial distribution, a method for modeling the effective thermal conductivity of "nanofluid" is established as discussed by the authors.
Journal ArticleDOI
Development of new correlations for convective heat transfer and friction factor in turbulent regime for nanofluids
TL;DR: In this paper, the authors present new correlations for the convective heat transfer and the friction factor developed from the experiments of nanoparticles comprised of aluminum oxide, copper oxide and silicon dioxide dispersed in 60% ethylene glycol and 40% water by mass.
Journal ArticleDOI
A review on exergy analysis of vapor compression refrigeration system
TL;DR: In this article, the possibilities of researches in the field of exergy analysis in various usable sectors where vapor compression refrigeration systems are used were reviewed, and it was found that exergy depends on evaporating temperature, condensing temperature, sub-cooling and compressor pressure.