Performance of compact heat exchanger in the presence of novel hybrid graphene nanofluids

Ponangi, Babu Rao; Krishna, V.; Seetharamu, K.N.

doi:10.1016/j.ijthermalsci.2021.106925

Cited by 23 publications

(15 citation statements)

References 39 publications

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“…Thus, in our study, distilled water-based Al 2 O 3 , GnP and MWCNT nanofluid were formulated using a two-step method (Ponangi et al , 2021) in the laboratory, as presented in Figure 3(a). First, cetyltrimethylammonium bromide surfactant was added to distilled water and then stirred for 1 h via magnetic stirrer at 1200 rpm.…”

Section: Methodsmentioning

confidence: 99%

“…This CFD analysis gives the facility to forecast the performance of PHE with high-level precision without even executing the experiment. Thus, in our study, distilled water-based Al 2 O 3 , GnP and MWCNT nanofluid were formulated using a two-step method (Ponangi et al, 2021) in the laboratory, as presented in Figure 3(a). First, cetyltrimethylammonium bromide surfactant was added to distilled water Chevron plate heat exchanger and then stirred for 1 h via magnetic stirrer at 1200 rpm.…”

Section: Introductionmentioning

confidence: 99%

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Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al₂O₃, GNP and MWCNT nanofluids

Singh

Ghosh

2021

HFF

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Purpose The study aims to use nanofluids as coolants for improving heat transfer peculiarities of plate heat exchangers (PHE). The experimental and numerical investigations are thoroughly performed using distilled water-based Al2O3, graphene nanoplatelet (GnP) and multi-walled carbon nanotubes (MWCNT) nanofluids. Design/methodology/approach The numerical simulation based on Single Phase Model (SPM) was performed on a realistic 3 D model of PHE having similar dimensions as of the actual plate. The standard k-epsilon turbulent model was used to solve the problem. The concentration and flow rate of nanofluids were ranging from 0.1 to 1 Vol.% and 1 to 5 lpm, respectively, at 30°C. Whereas, hot side fluid is distilled water at 2 lpm and 80°C. The heat transfer characteristics such as bulk cold outlet temperature, heat transfer rate (HTR), heat transfer coefficient (HTC), Nusselt number (Nu), pressure drop, pumping power, effectiveness and exergy loss were experimentally evaluated using nanofluids in a PHE. Findings The experimental results were then compared with the numerical model. The experimental results revealed maximum enhancement in an average heat transfer rate of 9.86, 14.86 and 17.27% using Al2O3, GnP and MWCNT nanofluids, respectively, at 1 Vol.%. The present computational fluid dynamics model accurately predicts HTR, and the results deviate <1.1% with experiments for all the cases. The temperature and flow distribution show promising results using nanofluids. Originality/value The study helps to visualise heat transfer and flow distribution in PHE using different nanofluids under different operating conditions.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al₂O₃, GNP and MWCNT nanofluids

Singh

Ghosh

2021

HFF

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“…He used this method in heat conduction, flow through pipe networks, heat exchangers and heat transfer enhancement (Chaudhuri et al , 1997; Parikshit et al , 2015; Ranganayakulu et al , 1997a, 1997b; Ranganayakulu and Seetharamu, 1999; Ravikumar et al , 1989; Kavadiki et al , 2015). He continued such a simple but effective approach to energy and momentum balance in various applications throughout his research career until recently (Ponangi et al , 2021; Kavadiki et al , 2016). Other notable contributions of KNS include computational fluid dynamics, heat, and mass transfer in porous media, drying, genetic algorithms and electronic cooling (Gowda et al , 1998; Jeevan, 2001; Murugesan et al , 2001; Nithiarasu et al , 1997; Parnaik et al , 1999; Quadir et al , 2000).…”

Section: Brief Summary Of Achievementsmentioning

confidence: 99%

Editorial: Professor Kannahalli Narasimha Shastri Seetharamu – a tribute to an outstanding computational heat transfer expert

Nithiarasu

Lewis

Thomas

2022

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“…Takabi and Salehi [8] numerically explore natural convection for Al₂O₃/water nanofluid and Al₂O₃-Cu/ water hybrid nanoparticles. Ponangi et al [9] used graphene-based hybrid nanofluid in a compact heat exchanger to observe fluid effectiveness and pressure drop. Aghabozorg et al [10] employed Fe 2 O 3 -CNT magnetic nanoparticles in a shell and tube heat exchanger under three specific temperatures.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Shell and Tube Type Heat Exchanger using Hybrid Nanofluid

Bhattad

Babu

2022

Trends Sci

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A numerical analysis has been performed on a parallel flow shell and tube heat exchanger with different hybrid nanofluids in the present study. The heat exchanger consists of baffles which may increase the heat transfer characteristics. Hybrid nanofluids are used as a cooling medium. The author studied the effect of dissolved nanoparticles on Prandtl number and thermal transfer characteristics. The results show a convincing enhancement in the heat transfer characteristics by introducing hybrid nanoparticles into the primary fluid (water). The total concentration of nanoparticles was 2 vol%. Different combinations of nanoparticles as a coolant studied were Al₂O₃+MWCNT, Al₂O₃+Beo, Al₂O₃+AlN, and Al₂O₃+TiO₂ (in equal volume ratios). The heat transfer rate was enhanced maximum by 16.5 % for Al₂O₃+MWCNT/ water hybrid nanofluid. Moreover, Prandtl number was observed reduced using nanoparticles with a maximum reduction of 10.5 % for Al₂O₃+TiO₂/ water hybrid nanofluid. HIGHLIGHTS A numerical analysis was performed in a parallel flow shell and tube heat exchanger Nanofluids such as Al₂O₃+MWCNT, Al₂O₃+Beo, Al₂O₃+AlN, and Al₂O₃+TiO₂ (in equal volume ratios) was used as a coolant The effect of dissolved nanoparticles on Prandtl number and thermal transfer characteristics were studied The heat transfer rate was enhanced maximum by 16.5 % for Al₂O₃+MWCNT/ water hybrid nanofluid Prandtl number was observed reduced using nanoparticles with a maximum reduction of 10.5 % for Al₂O₃+TiO₂/ water hybrid nanofluid GRAPHICAL ABSTRACT

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Performance of compact heat exchanger in the presence of novel hybrid graphene nanofluids

Cited by 23 publications

References 39 publications

Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al₂O₃, GNP and MWCNT nanofluids

Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al₂O₃, GNP and MWCNT nanofluids

Editorial: Professor Kannahalli Narasimha Shastri Seetharamu – a tribute to an outstanding computational heat transfer expert

Thermal Analysis of Shell and Tube Type Heat Exchanger using Hybrid Nanofluid

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Performance of compact heat exchanger in the presence of novel hybrid graphene nanofluids

Cited by 23 publications

References 39 publications

Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al2O3, GNP and MWCNT nanofluids

Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al2O3, GNP and MWCNT nanofluids

Editorial: Professor Kannahalli Narasimha Shastri Seetharamu – a tribute to an outstanding computational heat transfer expert

Thermal Analysis of Shell and Tube Type Heat Exchanger using Hybrid Nanofluid

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Product

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Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al₂O₃, GNP and MWCNT nanofluids

Pressure drop and heat transfer characteristics in 60° Chevron plate heat exchanger using Al₂O₃, GNP and MWCNT nanofluids