Cooling of Gases through Packed Tubes

Leva, Max; Weintraub, M.; Grummer, Milton; Clark, E. L.

doi:10.1021/ie50460a042

Cited by 52 publications

(14 citation statements)

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“…The power density of this type of fuel element will likely be limited by considerations other than heat transfer, i.e., the sintering temperature and pres sure of the particles, radiation damage to the fuel, length of operation, and so forth. (6) In order to obtain an analytical solution of a heat transfer and fluid flow problem for a packed bed, it is necessary to make many simplifications and assumptions. Thus, in some cases an experimental approach would appear to be more fruitful.…”

Section: Discussionmentioning

confidence: 99%

Some Heat Transfer and Fluid Flow Considerations for a Packed-Bed Fuel Element

Viskanta¹

1961

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Section: Discussionmentioning

confidence: 99%

Some Heat Transfer and Fluid Flow Considerations for a Packed-Bed Fuel Element

Viskanta¹

1961

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“…The conductive term due to the metallic (e.g., stainless steel) pipe has been neglected because its contribution to the overall thermal resistance is considerably lower than the convective ones. Heat transfer inside the tube is expressed through Leva's correlation 51,52 for catalytic fixed beds:…”

Section: Methodsmentioning

confidence: 99%

Power-to-Gas through High Temperature Electrolysis and Carbon Dioxide Methanation: Reactor Design and Process Modeling

Giglio

Deorsola

Gruber

et al. 2018

Ind. Eng. Chem. Res.

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This work deals with the coupling between high temperature steam electrolysis using solid oxide cells (SOEC) and carbon dioxide methanation to produce a synthetic natural gas (SNG) directly injectable in the natural gas distribution grid via a power-to-gas (P2G) pathway. An intrinsic kinetics obtained from the open literature has been used as the basis for a plug flow reactor model applied to a series of cooled multitube fixed bed reactors for methane synthesis. Evaporating water has been considered as coolant, ensuring a high heat transfer coefficient within the shell side of the reactor. A methanation section has been designed and optimized in order to moderate the maximum temperature within the catalytic bed and to minimize the catalyst load. Then, process modeling of a plant coupling high temperature electrolysis and methanation is presented: the main goal of this analysis is the calculation of overall plant efficiency (in terms of electricity-to-SNG chemical energy). Plant size has been set considering a 10 MW el SOEC-based electrolysis unit; heat produced from the exothermal methanation is entirely used for water evaporation before the steam electrolysis. A heat exchanger network (HEN) has been designed in order to reduce the number of components, resulting in an external heat requirement equal to 185 kW (≈1.9% of the electrolysis power). The SOEC-based power-to-gas system presented a higher heating value based efficiency equal to ≈86% (≈77% if evaluated on lower heating value basis).

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“…Although a great deal of data have appeared in the literature on the dynamics of gas fluidized solids, (3,4,7,9) almost all of the work has been concerned with solids of a single particle size, or with very narrow ranges of particle sizes. In many applications of the fluidization technique, it is necessary to use solids containing a wide range of particle sizes.…”

Section: Introduction a Purpose Of Studymentioning

confidence: 99%

Studies of Particle Size Distribution in Fluidized Beds

Katz¹

1957

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Cooling of Gases through Packed Tubes

Cited by 52 publications

References 0 publications

Some Heat Transfer and Fluid Flow Considerations for a Packed-Bed Fuel Element

Some Heat Transfer and Fluid Flow Considerations for a Packed-Bed Fuel Element

Power-to-Gas through High Temperature Electrolysis and Carbon Dioxide Methanation: Reactor Design and Process Modeling

Studies of Particle Size Distribution in Fluidized Beds

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