4.5 Article

Experimental and support vector machine predictions of entropy generations and exergy efficiency of Fe3O4-SiO2/Water hybrid nanofluid in a plate heat exchanger

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Environmental Sciences

Sustainable Heat Transfer Management: Modeling of Entropy Generation Minimization and Nusselt Number Development in Internal Flows with Various Shapes of Cross-Sections Using Water and Al2O3/Water Nanofluid

Atef El Jery et al.

Summary: To achieve the best performance of a thermal system, two major analyses, energy and entropy generation, must be carried out. The ideal scenario is to minimize entropy generation and maximize the Nu number. In this study, we investigated entropy generation and Nu number of fluid flow through tubes of various cross-sections, including circular tubes, square channels, and rectangular ducts. Our results showed that using nanoparticles increased the Nu number while decreasing entropy generation. Circular cross-sections outperformed square ones in terms of Nu number and entropy generation. Rectangular cross-sections generally performed better than square ones. The average Nu of circular cross-sections was 26% higher than square ones, while rectangular cross-sections had a 5% higher average Nu. Circular cross-sections also had the lowest total entropy generation, being 44% and 38% lower than rectangular and square cross-sections, respectively.
Article Engineering, Multidisciplinary

Experimental study on the thermophysical properties, heat transfer, thermal entropy generation and exergy efficiency of turbulent flow of ZrO2-water nanofluids

L. Syam Sundar

Summary: This experimental study investigates the thermophysical properties, heat transfer coefficient, thermal entropy generation, frictional entropy generation, and exergy efficiency of ZrO2/DI-water nanofluids circulating through a tube under turbulent flow. The results show that at a 1.0% vol. loading of nanofluid, the thermal conductivity increases by 24.96% at 60 degrees C, while the viscosity increases by 45.57% at 20 degrees C compared to the base fluid. Additionally, the heat transfer coefficient and Nusselt number of the 1.0% vol. nanofluid increase by 46.30% and 31.65% respectively, with a penalty in friction factor of 19.21% and pumping power penalty of 13.91% at a Reynolds number of 14575, compared to water. The thermal entropy generation is reduced by 31.65% and the frictional entropy generation is increased by 19.2% at the 1.0% vol. nanofluid and Reynolds number of 14575. The exergy efficiency is also enhanced by 24.42% at the 1.0% vol. and Reynolds number of 14575. Overall, the thermal performance factor of ZrO2 nanofluids is 1.242 times larger than that of water, indicating their beneficial heat transfer properties.

ALEXANDRIA ENGINEERING JOURNAL (2023)

Article Thermodynamics

Experimental investigation on the performance of hybrid Fe3O4 coated MWCNT/Water nanofluid as a coolant of a Plate heat exchanger

A. M. Alklaibi et al.

Summary: Experimental investigation of MWCNT + Fe3O4/water hybrid nanofluids as a coolant for a plate heat exchanger showed improved exergy efficiency, thermal performance factor, and effectiveness compared to de-ionized water, indicating the potential for enhancing heat transfer efficiency. The study also revealed a tradeoff between flow rate and cost, suggesting that operating at 5 lpm would be the most cost-effective option.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2022)

Article Multidisciplinary Sciences

Entropy generation of nanofluid flow in hexagonal microchannel

Mohamed Omri et al.

Summary: A new model for entropy generation number in hexagonal microchannel is developed based on the equation proposed by Bejan. The effects of Cu, CuO, Al2O3, and TiO2 mixed with pure water inside the microchannel are evaluated through entropy generation analysis. The results show that increasing heat flux leads to higher thermal entropy generation and Bejan number, but lower frictional entropy production, with an inverse variation trend between thermal and friction entropy generation numbers when varying volume percentage and nanoparticle diameter.

JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE (2022)

Article Thermodynamics

Heat transfer analysis and entropy generation in the nanofluids composed by Aluminum and γ- Aluminum oxides nanoparticles

Rabia Rehman et al.

Summary: A porous rotating disk was used to investigate the relationship between electrically conducting, incompressible gamma-alumina nanofluids and the second law of thermodynamics. The viscosity and thermal conductivity models of alumina nanofluids were obtained experimentally. Different velocity profiles were observed, and the influence of nanofluid type on fluid properties was studied.

CASE STUDIES IN THERMAL ENGINEERING (2022)

Article Thermodynamics

Investigation of thermal entropy generation and nanofluid flow in a new heatsink with effect of nanoparticles shape

Saeed Alqaed et al.

Summary: This paper numerically investigates the entropy generation in two novel micro heatsinks with different fin shapes. The results show that the shape of fins significantly affects the entropy generation and pumping power, increasing the Reynolds number reduces the amount of entropy generation and increases the pumping power, and adding nanoparticles with high volume percentages is not suitable in terms of entropy generation and pumping power.

CASE STUDIES IN THERMAL ENGINEERING (2022)

Article Engineering, Aerospace

Heat transfer and entropy generation of water/TiO2 nanofluid flow in a wavy channel using two-phase mixture approach

B. Boudraa et al.

Summary: In this study, a numerical analysis was conducted to investigate entropy generation and heat transfer in a wavy channel filled with water-TiO2 nanofluid under constant heat flow. The results showed that increasing the volume fraction of nanoparticles, Reynolds number, and wavy wall amplitude can enhance the heat transfer rate. Therefore, it is recommended to use higher values of these parameters in the wavy channel from engineering and economic perspectives.

THERMOPHYSICS AND AEROMECHANICS (2022)

Article Thermodynamics

Experimental analysis of exergy efficiency and entropy generation of diamond/water nanofluids flow in a thermosyphon flat plate solar collector

A. M. Alklaibi et al.

Summary: The experimental results demonstrate that the parameters are strongly influenced by changes in solar irradiation. The highest collector thermal efficiency is achieved by using 1.0 vol% ND/water nanofluid, showing a 12.7% increase compared to pure water. Furthermore, the study reveals that the nanofluid is more sensitive to entropy generation than water as the working fluid.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2021)

Article Materials Science, Multidisciplinary

Thermal entropy and exergy efficiency analyses of nanodiamond/water nanofluid flow in a plate heat exchanger

L. Syam Sundar et al.

Summary: The study aimed to analyze the heat transfer coefficient and thermal entropy generation of plate heat exchanger using water-based nanodiamond nanofluids. The experiments investigated the impact of Reynolds number, Peclet number, and particle volume loadings on heat transfer and entropy generation. Results showed significant improvements in heat transfer coefficient and Nusselt number with increased nanofluid particle loadings, with enhancements ranging from 32.50% to 55.47% compared to base fluid at specific conditions.

DIAMOND AND RELATED MATERIALS (2021)

Article Engineering, Chemical

Entropy generation and exergy efficiency analysis of ethylene glycol-water based nanodiamond + Fe3O4 hybrid nanofluids in a circular tube

B. Saleh et al.

Summary: Experimental results show that the addition of nanodiamond+Fe3O4 hybrid nanofluids can significantly increase thermal conductivity and viscosity, thereby improving heat transfer efficiency. Under the conditions of 0.2% particle loading and 60 degrees Celsius, the entropy generation and exergy efficiency of the hybrid nanofluids are significantly increased.

POWDER TECHNOLOGY (2021)

Article Thermodynamics

Heat Transfer and Second Law Analysis of Ethylene Glycol-Based Ternary Hybrid Nanofluid Under Laminar Flow

L. Syam Sundar et al.

Summary: The experimental results show that in reduced graphene oxide (rGO)-Fe3O4-TiO2 hybrid nanofluid, as the particle loading and Reynolds number increase, the heat transfer performance and exergy efficiency are enhanced, while the thermal conductivity and viscosity also increase.

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS (2021)

Article Materials Science, Multidisciplinary

Second law of thermodynamic analysis of 40:60% propylene glycol and water mixture based nanodiamond nanofluid under transition flow

L. Syam Sundar et al.

Summary: Experimental study on the second law efficiency of a transition flow in a tube containing 40:60% weight ratio of propylene glycol and water mixture based nanodiamond nanofluid showed improvements in heat transfer, friction factor, pumping power, and thermal performance as the particle concentration and Reynolds number increased. Compared to the base fluid, the nanofluid exhibited significant enhancements in heat transfer coefficient, Nusselt number, pressure drop, pumping power, friction factor, and thermal performance factor, along with reduced thermal entropy generation.

DIAMOND AND RELATED MATERIALS (2021)

Article Thermodynamics

Experimental study on heat transfer, friction factor, entropy and exergy efficiency analyses of a corrugated plate heat exchanger using Ni/water nanofluids

B. Saleh et al.

Summary: The experimental study on nickel/water nanofluids flow in a corrugated plate heat exchanger shows significant improvements in overall heat transfer performance with increasing nanoparticle loadings and Reynolds numbers, but this enhancement is accompanied by an increase in friction factor and pumping power.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2021)

Article Thermodynamics

Hydrothermal performance of different alumina hybrid nanofluid types in plate heat exchanger Experimental study

Atul Bhattad et al.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2020)

Review Chemistry, Physical

Entropy generation of nanofluid and hybrid nanofluid flow in thermal systems: A review

Gabriela Huminic et al.

JOURNAL OF MOLECULAR LIQUIDS (2020)

Article Thermodynamics

Analysis of Particle Dispersion and Entropy Generation in Turbulent Mixed Convection of CuO-Water Nanofluid

Farzad Bazdidi-Tehrani et al.

HEAT TRANSFER ENGINEERING (2019)

Article Thermodynamics

Heat transfer of nanoparticles employing innovative turbulator considering entropy generation

M. Sheikholeslami et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2019)

Article Computer Science, Interdisciplinary Applications

Theoretical and mathematical analysis of entropy generation in fluid flow subject to aluminum and ethylene glycol nanoparticles

Faisal Shah et al.

COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE (2019)

Article Materials Science, Multidisciplinary

Entropy generation of nanofluid flow in a microchannel heat sink

Eyuphan Manay et al.

RESULTS IN PHYSICS (2018)

Article Thermodynamics

Heat transfer and entropy generation analyses of nanofluids in helically coiled tube-in-tube heat exchangers

Gabriela Huminic et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2016)

Article Thermodynamics

Shape effects of nanosize particles in Cu-H2O nanofluid on entropy generation

R. Ellahi et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2015)

Article Thermodynamics

Heat transfer performance and exergy analyses of a corrugated plate heat exchanger using metal oxide nanofluids

M. A. Khairul et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2014)

Article Thermodynamics

Analysis of entropy generation using nanofluid flow through the circular microchannel and minichannel heat sink

M. R. Sohel et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2013)

Article Thermodynamics

The effects of nanofluid on thermophysical properties and heat transfer characteristics of a plate heat exchanger

F. S. Javadi et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2013)

Review Thermodynamics

A review of entropy generation in nanofluid flow

Omid Mahian et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2013)

Article Thermodynamics

Experimental analysis of heat transfer and friction factor of nanofluid as a coolant in a corrugated plate heat exchanger

Shive Dayal Pandey et al.

EXPERIMENTAL THERMAL AND FLUID SCIENCE (2012)

Article Thermodynamics

Entropy generation of viscous dissipative nanofluid flow in microchannels

Wei Han Mah et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2012)

Article Thermodynamics

Fuzzy logic to predict the heat transfer in an air cooler equipped with different tube inserts

Alimohammad Karami et al.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2012)

Review Green & Sustainable Science & Technology

A review on entropy generation in natural and mixed convection heat transfer for energy systems

Hakan F. Oztop et al.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2012)

Article Thermodynamics

Entropy generation due to flow and heat transfer in nanofluids

Pawan K. Singh et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2010)

Article Thermodynamics

Entropy Generation Analysis for Nanofluid Flow in Microchannels

Jie Li et al.

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME (2010)

Article Computer Science, Artificial Intelligence

A novel approach for ANFIS modelling based on full factorial design

Mrinal Buragohain et al.

APPLIED SOFT COMPUTING (2008)

Article Thermodynamics

Entropy generation minimization of fully developed internal flow with constant heat flux

EB Ratts et al.

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME (2004)