The effect of using multichannel twisted tape and nanofluid on the absorber tube's heat transfer and the efficiency of a linear parabolic solar collector

Mustafa, Jawed; Alqaed, Saeed; Sharifpur, Mohsen; Husain, Shahid

doi:10.1016/j.seta.2022.102329

Cited by 12 publications

(2 citation statements)

References 47 publications

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“…This study showed that dynamic viscosity also thermal conductivity with GO nanofluid were 23.4% and 9.1% better than Al2O3based water nanofluid. Again, PTC fitted with twisted shaped tape or helical structured paths to provide rotational motion to the working nanofluid was examined by Mustafa et al [13]. Watercopper oxide was chosen as the heat-carrying liquid.…”

Section: Introduction:-mentioning

confidence: 99%

Thermal performance evaluation of parabolic trough collector having different inserts and working with hybrid nanofluid

Chakraborty

Das²,

Gupta

2023

Energy & Environment

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This study emphasizes the comparative investigation of the thermal capacity of parabolic solar trough collectors with spherical-shaped balls and two types of elliptical inserts (longitudinal orientation). Hybrid nanofluid is the heat-carrying liquid obtained by mixing CuO and Al2O3 nanoparticles in distilled water. Analytical investigations are conducted for 1% vol. concentration of hybrid nanoparticles in distilled water for varying proportions. Computational analysis is chosen to obtain thermal as well as flow trends in the tube receiver. The outcomes disclosed that 13.3%, 10.02%, and 16% improvements are noted for thermal efficiency, Nusselt number, and thermal performance index with elliptical inserts of minor diameter 12 mm in the receiver, respectively, than spherical ball inserts. The highest pump work of 35 W is associated with spherical inserts at 0.033 kg/s.

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Section: Introduction:-mentioning

confidence: 99%

Thermal performance evaluation of parabolic trough collector having different inserts and working with hybrid nanofluid

Chakraborty

Das²,

Gupta

2023

Energy & Environment

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“…Menter developed the SST k − ω turbulence model (Menter et al., 2003) based on the standard k − ω model (Wilcox, 1988). This model is suitable for multiphase flow heat transfer applications with low to high Reynolds numbers (Mahani et al., 2020; Mustafa et al., 2022; Roy et al., 2012). Zhang and Che (2011) used eight different turbulence models to simulate the fluid flow and heat transfer in a highly curved channel.…”

Section: Model Introductionmentioning

confidence: 99%

Numerical Study of the Transport Process of Shallow Heat Carried by Turbidity Currents in Deep‐Sea Environments

Tian,

Ren,

Chen

et al. 2023

JGR Oceans

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Turbidity currents often originate from relatively high‐temperature water bodies near the coast of the upper continental shelf. Turbidity currents are the main carriers that transport land sediments to the deep sea. Their impact on heat exchange and material transport in the deep‐sea ecosystem is receiving more attention. However, presently, there are few studies on heat transport by turbidity currents. This article presents a coupled model of multiphase flow and heat transfer through laboratory experiments and numerical simulations. The effects of sediment particle size, density, and Froude number on the characteristics of turbidity current heat transfer are analyzed, and the heat flux carried by turbidity currents transporting upper layer heat into the deep sea is reproduced. The results indicate that turbidity currents are carriers of shallow heat into the deep sea. The temperature structure within turbidity currents follows a Gaussian function and can effectively preserve heat. The efficiency of the long‐distance transport of heat carried by turbidity currents is negatively correlated with sediment particle size and the velocity of turbidity currents, and positively correlated with sediment concentration Turbidity current heat shock events in the future may have significant and far‐reaching impacts on deep‐sea ecosystems.

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Flow and sensitivity analysis of MHD radiative hybrid nanofluid flow across a permeable wedge with slip condition: Response surface methodology

Chakraborty,

Janapatla

2024

Z Angew Math Mech

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This current paper has been written to investigate the effect of a hybrid Tiwari and Das nanofluid model along with optimizing the flow using sensitivity analysis. Heat transfer rates and skin friction assessments were examined with the supplementation of external effects like heat source, thermal radiation, buoyancy forces, velocity slip as well as magnetic effect with spherical‐shaped nanoparticles. The mathematical modeling was formulated using a system of nonlinear PDE. Similarity transformations were implemented in the governing equations for obtaining the final set of nondimensional equations which were then solved using bvp4c code in MATLAB. The results obtained were in close agreement with published results. Some of the significant results obtained included an increase in Nusselt number by 2.26% for an increase in velocity ratio parameter () from to 0.3 along with an increase in skin friction coefficient by 0.77% with magnetic () parameter to . The heat transfer profile was augmented by 0.79% with increasing radiation parameter to while an increase of 18.84% was observed for skin friction profile values recorded for the hybrid model as compared to the base fluid model. Nusselt number reduced by 0.51% for a transition to nanofluid model from regular fluid and by 1.76% for the hybrid model compared to the nanofluid model The unblocked face‐centered central composite design (CCD) was used for analyzing the sensitivity analysis of independent, continuous input parameters on the response parameters, skin friction coefficient, and Nusselt number. The high values for , and , for Nusselt number and skin friction coefficient values, respectively, validate the ANOVA results obtained using response surface methodology (RSM). Only shows positive sensitivity for both the Nusselt number and skin friction responses. The present hybrid nanofluid model finds extensive applications in bio‐toxicity studies, manufacturing of water heaters, and forging of hot exhaust valve heads.

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The effect of using multichannel twisted tape and nanofluid on the absorber tube's heat transfer and the efficiency of a linear parabolic solar collector

Cited by 12 publications

References 47 publications

Thermal performance evaluation of parabolic trough collector having different inserts and working with hybrid nanofluid

Thermal performance evaluation of parabolic trough collector having different inserts and working with hybrid nanofluid

Numerical Study of the Transport Process of Shallow Heat Carried by Turbidity Currents in Deep‐Sea Environments

Flow and sensitivity analysis of MHD radiative hybrid nanofluid flow across a permeable wedge with slip condition: Response surface methodology

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