Application of oxygen ion-conductive membranes for simultaneous electricity and hydrogen generation

Granovskii, Mikhail; Dinçer, İbrahim; Rosen, Marc A.

doi:10.1016/j.cej.2006.01.020

Cited by 17 publications

(4 citation statements)

References 9 publications

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“…The introduction of ion conductive membranes and fuel cells into a gas-turbine cycle can further increase the efficiency and decrease AP emissions [24].…”

Section: Resultsmentioning

confidence: 99%

Economic and environmental comparison of conventional, hybrid, electric and hydrogen fuel cell vehicles

Granovskii

Dinçer

Rosen

2006

Journal of Power Sources

331

127

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“…The introduction of ion conductive membranes and fuel cells into a gas-turbine cycle can further increase the efficiency and decrease AP emissions [24].…”

Section: Resultsmentioning

confidence: 99%

Economic and environmental comparison of conventional, hybrid, electric and hydrogen fuel cell vehicles

Granovskii

Dinçer

Rosen

2006

Journal of Power Sources

331

127

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“…leading to a more efficient processes in the ethylene production cycle, 40 olefin/paraffin separation 41 or hydrogen production with CO 2 capture. 42,43 Thus, the application of exergy studies in separation processes is becoming a very powerful tool to determine their convenience in terms of efficiency, sustainability and economics, allowing…”

Section: Membranesmentioning

confidence: 99%

“…There are significant possibilities also in the petrochemical field by integration of membrane separation operations, such as microfiltration, gas separation, membrane contactors, membrane reactors, etc. leading to a more efficient processes in the ethylene production cycle, olefin/paraffin separation or hydrogen production with CO 2 capture …”

Section: Exergy In Separation Processesmentioning

confidence: 99%

Exergy as a tool for measuring process intensification in chemical engineering

Luis

2013

J of Chemical Tech & Biotech

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Exergy is defined as the maximum shaft work that can be done in a process to bring the system into equilibrium with the environment. Thus, exergy analyses are the first step to understand where the weak points of processes are. It considers intrinsically the quality of energy: when energy loses its quality, exergy is destroyed. In addition, optimization of processes aiming at the minimization of exergy destruction can be done as a function of the topology and physical characteristics of the system, such as finite dimensions, shapes, materials, finite speeds, and finite‐time intervals of operation, establishing a direct relationship between exergy and process intensification. However, the emphasis on exergy in chemical engineering is still very poor compared with other fields, in spite of being one of the areas in which more exergy is destroyed due to reaction and separation. This paper gives an overview of the current application of exergy analyses in chemical engineering, showing the main fields in which exergy studies are performed and focusing the attention on two critical points of action: separation technologies (distillation and membrane technology) and CO2 capture. New research trends in chemical engineering using exergy as a tool for process intensification are highlighted. © 2013 Society of Chemical Industry

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“…Besides the flow and heat transfer characteristics, being the main concerns of internal flow applications, investigations into viscous effects, velocity and temperature profiles as well constitute a wide research area due to their direct role in the entropy generation of thermo-fluid systems. Thus, studies on second-law characteristics have recently been the topic of great interest in various fields such as combustion processes [16] and fuel cells [17].…”

Section: Introductionmentioning

confidence: 99%

2D Temperature Analysis of Energy and Exergy Characteristics of Laminar Steady Flow across a Square Cylinder under Strong Blockage

Korukçu

2015

Entropy

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Energy and exergy characteristics of a square cylinder (SC) in confined flow are investigated computationally by numerically handling the steady-state continuity, Navier-Stokes and energy equations in the Reynolds number range of Re = 10-50, where the blockage ratio (β = B/H) is kept constant at the high level of β = 0.8. Computations indicated for the upstream region that, the mean non-dimensional streamwise (u/Uo) and spanwise (v/Uo) velocities attain the values of u/Uo = 0.840→0.879 and v/Uo = 0.236→0.386 (Re = 10→50) on the front-surface of the SC, implying that Reynolds number and blockage have stronger impact on the spanwise momentum activity. It is determined that flows with high Reynolds number interact with the front-surface of the SC developing thinner thermal boundary layers and greater temperature gradients, which promotes the thermal entropy generation values as well. The strict guidance of the throat, not only resulted in the fully developed flow character, but also imposed additional cooling; such that the analysis pointed out the drop of duct wall (y = 0.025 m) non-dimensional temperature values (ζ) from ζ = 0.387→0.926 (Re = 10→50) at xth = 0 mm to ζ = 0.002→0.266 at xth = 40 mm. In the downstream region, spanwise thermal disturbances are evaluated to be most inspectable in the vortex driven region, where the temperature values show decrease trends in the spanwise direction. In the corresponding domain, exergy destruction is determined to grow with Reynolds number and decrease in the streamwise direction (xds = 0→10 mm). Besides, asymmetric entropy distributions as well were recorded due to the comprehensive mixing caused by the vortex system.

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Application of oxygen ion-conductive membranes for simultaneous electricity and hydrogen generation

Cited by 17 publications

References 9 publications

Economic and environmental comparison of conventional, hybrid, electric and hydrogen fuel cell vehicles

Economic and environmental comparison of conventional, hybrid, electric and hydrogen fuel cell vehicles

Exergy as a tool for measuring process intensification in chemical engineering

2D Temperature Analysis of Energy and Exergy Characteristics of Laminar Steady Flow across a Square Cylinder under Strong Blockage

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