Accurate prediction of the effective radial conductivity of highly conductive honeycomb monoliths with square channels

Visconti, Carlo Giorgio; Groppi, Gianpiero; Tronconi, Enrico

doi:10.1016/j.cej.2013.02.095

Cited by 37 publications

(26 citation statements)

References 11 publications

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“…To describe heat transfer in metallic honeycombs established approaches in the literature are based on monoliths not considering additional resistances between the coiled metal layers [11,20]. For the metallic honeycombs heat transfer is described by a model developed at the EBI for cubic cells based on the interconnection of the heat transfer resistances.…”

Section: Honeycomb Reactormentioning

confidence: 99%

Power‐to‐Gas: CO₂ Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Held

Schollenberger

Sauerschell

et al. 2020

Chemie Ingenieur Technik

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Power-to-Gas approaches comprise different activities to store electric power in form of gaseous energy carriers like hydrogen or methane. The synthesis of SNG (substitute natural gas) and its injection into the natural gas grid allows the utilization of the well-established infrastructure for natural gas storage, distribution and utilization without the need for further changes to the energy system. At the Engler-Bunte-Institut research focuses on catalytic methanation in catalytically coated metallic honeycomb reactors and in slurry bubble column reactors with the aim of evaluating alternative reactor concepts offering optimized heat transfer characteristics as well as maximizing the possibility of dynamic operation. Both concepts are attractive for small to medium scale power-to-gas applications. Hence, a scale-up was performed for bothreactor concepts with the aim of implementation on commercial scale.

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Section: Honeycomb Reactormentioning

confidence: 99%

Power‐to‐Gas: CO₂ Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Held

Schollenberger

Sauerschell

et al. 2020

Chemie Ingenieur Technik

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“…The effective radial thermal conductivity λ r,eff of a honeycomb body depends strongly on the dimensions (wall thickness, porosity) of the internal structure and on the thermal conductivity of the material of construction, but also on the properties of the gas flowing through the structure and its flow velocity. For calculating effective conductivities several correlations were published in literature . The correlations were developed from models for monolithic honeycomb structures in which the internal structure is counted for by heat resistors which are interconnected in various ways.…”

Section: Process and Reactor Basicsmentioning

confidence: 99%

“…The correlations were developed from models for monolithic honeycomb structures in which the internal structure is counted for by heat resistors which are interconnected in various ways. For a symmetric interconnection of the resistances Visconti developed Eq. and Eq.…”

Section: Process and Reactor Basicsmentioning

confidence: 99%

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Scale‐Up of Innovative Honeycomb Reactors for Power‐to‐Gas Applications – The Project Store&Go

Schollenberger

Bajohr

Gruber

et al. 2018

Chemie Ingenieur Technik

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The German “Energiewende” is heavily based on electric power and, therefore, requests solutions to serve non‐electric energy uses and to store electric energy in large scale. Synthetic natural gas (SNG) produced with hydrogen from water electrolysis and with CO2 from mainly renewable sources is one approach. For the catalytic SNG production efficient removal and utilization of the reaction heat is the main issue. A metallic honeycomb‐like carrier‐based reactor proved in laboratory scale to match this challenge. This type of reactor shows good heat conductivity and enables optimized operation. In the EU‐funded project Store&Go the honeycomb methanation is scaled up to MW‐scale. For this, heat transfer and kinetic data were determined experimentally and used in CFD calculations for the reactor design. Finally a SNG plant with 1 MW feed‐in will be built and fully integrated operation will be shown.

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“…( ∇ ) where is the effective thermal conductivity of the monolith and it varies for both the axial and radial directions. The effective thermal conductivity is calculated using the methodology outlined in [17] and the convective heat transfer coefficient is calculated from equating the Nusselt number equation to 4 as suggested by [14]. The surface to surface radiation is neglected due to the lack of extremely large temperature gradients in the axial direction.…”

Section: Mathematical Modellingmentioning

confidence: 99%

Understanding Flow through Catalytic Converters

Ibrahim¹,

Abdou²,

Ahmed³

2017

Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17)

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-In this experiment the fluid flow behaviour through an automotive catalytic converter has been studied empirically and computationally. A CFD model utilizing the k-ω turbulence model and porous media approach was developed to simulate the flow through the monolithic ceramic substrate. The flow properties for the ceramic monolith were obtained using a 3D single channel approach. CFD analysis was validated by flow experiments with non-reacting flow using high temperature air. The local velocity and temperature profiles for inlet Reynolds Number of 43,000 were measured using hot-wire and high sensitivity thermocouple sensors. The CFD results were found to predict the experimental measurements with an average root mean square error of ±8%. The present analysis is considered to be a key step towards understanding the flow behaviour through catalytic converters that can help in achieving better design of the exhaust system.

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Accurate prediction of the effective radial conductivity of highly conductive honeycomb monoliths with square channels

Cited by 37 publications

References 11 publications

Power‐to‐Gas: CO₂ Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Power‐to‐Gas: CO₂ Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Scale‐Up of Innovative Honeycomb Reactors for Power‐to‐Gas Applications – The Project Store&Go

Understanding Flow through Catalytic Converters

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Accurate prediction of the effective radial conductivity of highly conductive honeycomb monoliths with square channels

Cited by 37 publications

References 11 publications

Power‐to‐Gas: CO2 Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Power‐to‐Gas: CO2 Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Scale‐Up of Innovative Honeycomb Reactors for Power‐to‐Gas Applications – The Project Store&Go

Understanding Flow through Catalytic Converters

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Product

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Power‐to‐Gas: CO₂ Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut

Power‐to‐Gas: CO₂ Methanation Concepts for SNG Production at the Engler‐Bunte‐Institut