Numerical Investigation of Nusselt Number for Nanofluids Flow in an Inclined Cylinder

Azeez, Kafel; Saleem, Ahmed; Obaid, Zain Alabdeen Hussein

doi:10.5098/hmt.16.20

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…To forecast the heat transport in intricate geometries, the grid system's development and refining are crucial. In other words, accuracy is greatly influenced by the density and dispersion of the grid lines [23][24][25][26][27][28][29]. ANSYS-Fluent 17.0, a commercial CFD software tool, is used to run numerical simulations.…”

Section: Figure 2 Meshing Of Receiver Geometrymentioning

confidence: 99%

Numerical Study of the Parabolic Dish Solar Collector Performance Evaluation Using Heat Exchanger Receiver

Majel,

Obaid,

Zidane

2023

IJHT

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The solar water heater is one of the most important applications used to invest in renewable energy, specifically solar energy, where hot water can be used for air conditioning, household uses, or industrial purposes. In this work, a new system was established for the production of hot water and steam using solar concentrators of the solar dish type, made of aluminum, having a (175 cm) diameter and a deepness of (15 cm) with a heat exchanger (radiator) as a receiver which is a new and innovative way of working. The front side of the dish was covered with strips of nickel metal reflecting sunlight to focus the solar radiation on a tank fixed at the center of the focus of the rays reflected from the dish. A heat exchanger (radiator) was used as a tank with the following dimensions (50cm×40cm×5cm) and a capacity of (4 liters). Numerical calculations were carried out using (Solidworks) and (Ansys workbench) to design and analyze this system. The simulated data revealed that the focus's placement and the spacing of the dishes are governed by the dish's size and the degree of inclination. The concentration ratio increases by (53%) when the dish diameter increases. The use of a radiator heat exchanger gives the largest use of solar-reflected radiation that is reflected from the collector because of the increased surface area exposed to solar radiation due to the presence of fins. The highest thermal efficiency (72.16%) was obtained at 355 K and a mass flow rate of 0.32 kg/sec.

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Section: Figure 2 Meshing Of Receiver Geometrymentioning

confidence: 99%

Numerical Study of the Parabolic Dish Solar Collector Performance Evaluation Using Heat Exchanger Receiver

Majel,

Obaid,

Zidane

2023

IJHT

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Efficient convective heat transfer enhancement in heat exchanger tubes with water based novel hybrid nanofluids: experimental investigation

Poloju

Mukherjee

Mishra

et al. 2023

J Therm Anal Calorim

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Experimental investigation of forced convective heat transfer and fluid flow in a mini heat pipe with rectangular micro grooves

MAJEL,

OBAID

2024

Journal of Thermal Engineering

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In the present study, the convective heat transfer coefficient of water in a laminar flow regime under constant inlet temperature conditions inside a flat mini heat pipe was investigated ex-perimentally. Heat flux ranged from 20-50W and various horizontal heat sink temperatures (operating temperature) ranged from 15-35°C with liquid flow rate (3.563E-8 m3/sec) used during the experiments. The rectangular microchannels performance is evaluated in terms of the temperature profile, heat transfer coefficient, Nusselt number and thermal resistance. The results emphasized that the mini heat pipe temperature gradients are less than the tempera-ture of the copper plate and the heat resistance gradually decreases to its lowest value when the heat flux value reaches its highest value if it does not exceed the capillary limits. The data also demonstrated that the coefficient of heat transfer in the condensation zone is lower than in the evaporation zone at different heat sink temperatures. The augmentation rate for the flat mini heat pipe thermal conductivity reached about 240% at a heat load 30W for the positions of thermosyphon and horizontal, while the rate of increase in the case of the anti-gravity situ-ation at a heat load 30W reaches 210%, then the improvement percentage begins to decrease to 200%. A generalized regression equation is developed for the estimation of the Nusselt number valid for water in a flat mini heat pipe.

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Numerical Investigation of Nusselt Number for Nanofluids Flow in an Inclined Cylinder

Cited by 3 publications

References 19 publications

Numerical Study of the Parabolic Dish Solar Collector Performance Evaluation Using Heat Exchanger Receiver

Numerical Study of the Parabolic Dish Solar Collector Performance Evaluation Using Heat Exchanger Receiver

Efficient convective heat transfer enhancement in heat exchanger tubes with water based novel hybrid nanofluids: experimental investigation

Experimental investigation of forced convective heat transfer and fluid flow in a mini heat pipe with rectangular micro grooves

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