Entropy analysis of conjugate heating in a pipe flow

Hyder, S. J.; Yilbaş, Bekir Sami

doi:10.1002/er.780

Cited by 13 publications

(6 citation statements)

References 9 publications

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“…Yapici and al. [22], Hyder and Yilbas [23], Abbassi and al. [24] and Sahin [25,26] performed many studies on second Law analysis and the entropy generation due to heat transfer and fluid friction in duct flows under various conditions.…”

Section: Introductionmentioning

confidence: 98%

Second Law Analysis in Convective Heat and Mass Transfer

Magherbi¹,

Abbassi

Hidouri

et al. 2006

Entropy

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This paper reports the numerical determination of the entropy generation due to heat transfer, mass transfer and fluid friction in steady state for laminar double diffusive convection, in an inclined enclosure with heat and mass diffusive walls, by solving numerically the mass, momentum, species conservation and energy balance equations, using a Control Volume FiniteElement Method. The influences of the inclination angle, the thermal Grashof number and the buoyancy ratio on total entropy generation were investigated. The irreversibilities localization due to heat transfer, mass transfer and fluid friction is discussed for three inclination angles at a fixed thermal Grashof number.

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Section: Introductionmentioning

confidence: 98%

Second Law Analysis in Convective Heat and Mass Transfer

Magherbi¹,

Abbassi

Hidouri

et al. 2006

Entropy

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“…Consequently, it is clear that prediction of entropy generation due to different flow conditions enables to determine the flow system with minimized losses. Considerable research work was carried out to investigate the importance of entropy generation in the thermal system [2][3][4][5]. Entropy generation and minimization were investigated extensively by Bejan [6], whereas he showed the fundamental importance of the entropy minimization for efficient processing.…”

Section: Introductionmentioning

confidence: 99%

Effect of variable viscosity and viscous dissipation on the Hagen-Poiseuille flow and entropy generation

Ganji

Nezhad

Hasanpour

2009

Numer. Methods Partial Differential Eq.

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In this article, the steady-state flow of a Hagen-Poiseuille model in a circular pipe is considered and entropy generation due to fluid friction and heat transfer is examined. Because of variation in fluid viscosity, the entropy generation in the flow varies. In this model, Arrhenius law is applied for temperature equation-dependent viscosity, and the influence of viscosity parameters on the entropy generation number and distribution of temperature and velocity is investigated. The governing momentum and energy equations, which are coupled due to the dissipative term in the energy equation, were solved by analytical techniques. The solutions of equations via perturbation method and homotopy perturbation method are obtained and then compared with those of numerical solutions. It is found that the fluid viscosity influences considerably the temperature distribution in the fluid close to the pipe wall, and increasing pipe wall temperature enhances the rate of entropy generation.

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“…Consequently, it is clear that prediction of entropy generation due to different flow conditions enables to determine the flow system with minimized losses. Considerable research work was carried out to investigate the importance of entropy generation in the thermal system [2–5]. Entropy generation and minimization were investigated extensively by Bejan [6], whereas he showed the fundamental importance of the entropy minimization for efficient processing.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of double gas hydrate formation in the presence of modified starch as a kinetic inhibitor in a flow mini‐loop apparatus

Talaghat

2011

Can J Chem Eng

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The main objective of the present work is experimental investigation of double gas hydrate formation with or without presence of modified starch as kinetic inhibitors in a flow mini‐loop apparatus. To this object, a laboratory flow mini‐loop apparatus was set up to measure the induction time for hydrate formation and the rate uptake when a gaseous mixture (such as 75% C1–25% C3, 25% C1–75% C3, 75% C1–25% i‐C4 and 25% C1–75% i‐C4) is contacted with water containing or not containing dissolved inhibitor under suitable temperature and pressure conditions. In each experiment, water blend saturated with gas mixture is circulated up to a required pressure. Pressure is maintained at a constant value during experimental runs by means of required gas mixture make‐up. The effect of pressure on gas consumption during hydrate formation is investigated with or without presence of polyvinylpyrrolidone and modified starch as kinetic inhibitors at various concentrations. Our results were shown that the modified starch can be applied as inhibitors in prevention of double gas hydrate formation in mini‐loop apparatus. © 2011 Canadian Society for Chemical Engineering

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Entropy analysis of conjugate heating in a pipe flow

Cited by 13 publications

References 9 publications

Second Law Analysis in Convective Heat and Mass Transfer

Second Law Analysis in Convective Heat and Mass Transfer

Effect of variable viscosity and viscous dissipation on the Hagen-Poiseuille flow and entropy generation

Experimental investigation of double gas hydrate formation in the presence of modified starch as a kinetic inhibitor in a flow mini‐loop apparatus

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