Abschätzung von spezifischer Oberfläche und Lückengrad bei biologischen Abluftreinigungsanlagen durch Vergleich von berechneten und experimentell erhaltenen Druckverlustwerten

Windsperger, Andreas

doi:10.1002/cite.330630122

Cited by 7 publications

(4 citation statements)

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“…The obtained results of the function of the coefficient of resistances in the function of the Reynolds number are shown in Fig. 7, which, just to illustrate, also include points resulting from other calculation models (Brauer, 1971;Ergun, 1952;Guimard et al, 2004;Kasieczka, 2011; Kembłowski et al, 1985;Windsperger, 1991;Zaworonkow, 1944) adjusted by the parameters resulting from the own research. The distribution of experimental points proves that expect for the Zaworonkow (Zaworonkow, 1944) model and the Blake-Kozeny (Guimard et al, 2004) model all the remaining ones show the same trend of changes to this coefficient, which confirms the adequacy of the adopted assumptions.…”

Section: Resultsmentioning

confidence: 65%

Model of Flow Resistance Coefficient for a Fragment of a Porous Material Deposit with Anisotropic Skeletal Structure

Wałowski¹

2018

Preprint

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The hydrodynamic results obtained from the permeability of porous materials not only affect the assessment of the stream of the gas flow through those materials but they also refer to the loss of pressure energy in that flow. The direct measure of that loss is flow resistances.The results of experimental research upon the assessment of the flow resistances of porous materials with respect to gas flow. The research conducted applied to natural materials with an anisotropic gap-porous structure. The tests were carried out on a gas permeability measuring system, adapted to different shapes of porous material samples. The process issue of the total pressure drop on a porous deposit was considered in the Reynolds number category. The coefficient of flow resistance for anisotropic materials was defined and the value of this coefficient was compared to the gas stream and the total pressure drop on the porous bed was experimentally evaluated.

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Section: Resultsmentioning

confidence: 65%

Model of Flow Resistance Coefficient for a Fragment of a Porous Material Deposit with Anisotropic Skeletal Structure

Wałowski¹

2018

Preprint

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“…The obtained results of the function of the coefficient of resistances in the function of the Reynolds number are shown in Figure 6, which, to illustrate, also include points resulting from other calculation models [19,20,[25][26][27][28][29] adjusted by the parameters resulting from the research.…”

Section: = (22)mentioning

confidence: 97%

“…Energies 2021, 14, 3355 9 of 13 * = 4 (34) The obtained results of the function of the coefficient of resistances in the function of the Reynolds number are shown in Figure 6, which, to illustrate, also include points resulting from other calculation models [19,20,[25][26][27][28][29] adjusted by the parameters resulting from the research. The distribution of experimental points proves that except for the Zaworonkow [28] model and the Blake-Kozeny [27] model, all the remaining ones show the same trend of changes to this coefficient, which confirms the adequacy of the adopted assumptions.…”

Section: = (22)mentioning

confidence: 99%

Model of Flow Resistance Coefficient for a Fragment of a Porous Material Deposit with Skeletal Structure

Wałowski

2021

Energies

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The hydrodynamic conditions resulting from the permeability of porous materials are based not only on the assessment of the gas flow through these materials, but also the losses related to the pressure energy in this flow. Flow resistance is a direct measure of this loss. The aim of this experimental research was to evaluate the flow resistance of the porous material in relation to the gas flow. The research was carried out on a material with a slit-porous structure. The tests were carried out on a system for measuring gas permeability under the conditions of gas bubbling through the char. The issue of the total pressure drop process in the porous bed was considered in the Reynolds number category. The coefficient of flow resistance for the char was determined and the value of this coefficient was compared with the gas stream, and an experimental evaluation of the total pressure drop on the porous bed was made. The novelty of this article is the determination of the tortuosity and the gas permeability coefficient for a solid of any shape—a rigid skeleton.

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“…In this way, the developed area was obtained in line with the porous sediment permeability trend-char in situ is presented as an example Figure 17. The dependence presented in Figure 16, corrected by parameters resulting from the authors' own research, was compared to the points resulting from other calculation models [28][29][30][31][32][33][34]. In this way, the developed area was obtained in line with the porous sediment permeability trend-char in situ is presented as an example Figure 17.…”

Section: Of 23mentioning

confidence: 98%

Gas Permeability Model for Porous Materials from Underground Coal Gasification Technology

Wałowski

2021

Energies

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Underground coal gasification (UCG) technology converts deep coal resources into synthesis gas for use in the production of electricity, fuels and chemicals. This study provides an overview of the systematic methods of the in situ coal gasification process. Furthermore, the model of the porous structure of coal has been presented and the gas movement taking place in the carbon matrix—which is part of the bed—has been described. The experimental tests were carried out with the use of air forced through the nozzle in the form of a gas stream spreading in many directions in a porous bed under bubbling conditions. The gas flow resistance coefficient was determined as a function of the Reynolds number in relation to the diameter of the gas flow nozzle. The proprietary calculation model was compared to the models of many researchers, indicating a characteristic trend of a decrease in the gas flow resistance coefficient with an increase in Reynolds number. The novelty of the study is the determination of the permeability characteristics of char (carbonizate) in situ in relation to melted waste rock in situ, taking into account the tortuosity and gas permeability factors for an irregularly shaped solid.

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Abschätzung von spezifischer Oberfläche und Lückengrad bei biologischen Abluftreinigungsanlagen durch Vergleich von berechneten und experimentell erhaltenen Druckverlustwerten

Cited by 7 publications

References 0 publications

Model of Flow Resistance Coefficient for a Fragment of a Porous Material Deposit with Anisotropic Skeletal Structure

Model of Flow Resistance Coefficient for a Fragment of a Porous Material Deposit with Anisotropic Skeletal Structure

Model of Flow Resistance Coefficient for a Fragment of a Porous Material Deposit with Skeletal Structure

Gas Permeability Model for Porous Materials from Underground Coal Gasification Technology

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