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Dive into the research topics where Marek Dudyński is active.

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Featured researches published by Marek Dudyński.


Waste Management | 2012

From feathers to syngas - technologies and devices.

Marek Dudyński; Kamil Kwiatkowski; Konrad Bajer

The poultry waste produced by industrial slaughterhouses typically contains not only feathers, but also a mixture of animal entrails, nails, blood, beaks and whole carcasses. Economical utilisation of this mixture, varying strongly in composition and moisture content, is, in general, difficult. We demonstrate that this awkward material can be successfully used for gasification in a simple, fixed-bed gasifier. The method of gasification, which we developed, enables control of the gasification process and ensures its stability in the operational regime of a working poultry processing plant. The installation, which has been working in Poland for 2 years, utilises 2 tons of feathers per hour and produces syngas of stable composition and fairly high quality. The syngas is burnt in the combustion chamber adjacent to the gasifier. Heat is recuperated in a boiler producing 3.5 tons per hour of technological steam continuously used for the operation of the slaughterhouse. The whole process complies with the stringent emission standards. In the paper we present the end-use device for feather utilisation and describe the underlying gasification and syngas combustion processes. Key elements of the whole installation are briefly discussed. The environmental impacts of the installation are summarized.


Numerical Heat Transfer Part A-applications | 2013

Numerical Modeling of Biomass Pyrolysis—Heat and Mass Transport Models

Kamil Kwiatkowski; Bartosz Górecki; Jakub Korotko; Wojciech Gryglas; Marek Dudyński; Konrad Bajer

We consider the pyrolysis of robinia pseudoacacia, which is a common material for biomass gasifiers. We formulate three models of the process, with increasingly detailed physics, best suited for different spatial scales from large to small. For each model, we perform numerical simulations of adaptable complexity and compare the results with the thermogravimetric analysis (TGA) experiments.


Journal of Physics: Conference Series | 2014

Pyrolysis and gasification of single biomass particle – new openFoam solver

Kamil Kwiatkowski; Pawel J. Zuk; Marek Dudyński; Konrad Bajer

We present a new solver biomassGasificationFoam that extended the functionalities of the well-supported open-source CFD code OpenFOAM. The main goal of this development is to provide a comprehensive computational environment for a wide range of applications involving reacting gases and solids. The biomassGasificationFoam is an integrated solver capable of modelling thermal conversion, including evaporation, pyrolysis, gasification, and combustion, of various solid materials. In the paper we show that the gas is hotter than the solid except at the centre of the sample, where the temperature of the solid is higher. This effect is expected because the thermal conductivity of the porous matrix of the solid phase is higher than the thermal conductivity of the gases. This effect, which cannot be considered if thermal equilibrium between the gas and solid is assumed, leads to precise description of heat transfer into wood particles.


Physical Review E | 2016

Percolation thresholds for discrete-continuous models with nonuniform probabilities of bond formation.

Bartłomiej Szczygieł; Marek Dudyński; Kamil Kwiatkowski; Maciej Lewenstein; Gerald J. Lapeyre; Jan Wehr

We introduce a class of discrete-continuous percolation models and an efficient Monte Carlo algorithm for computing their properties. The class is general enough to include well-known discrete and continuous models as special cases. We focus on a particular example of such a model, a nanotube model of disintegration of activated carbon. We calculate its exact critical threshold in two dimensions and obtain a Monte Carlo estimate in three dimensions. Furthermore, we use this example to analyze and characterize the efficiency of our algorithm, by computing critical exponents and properties, finding that it compares favorably to well-known algorithms for simpler systems.


Fuel Processing Technology | 2015

Biomass gasification: Influence of torrefaction on syngas production and tar formation

Marek Dudyński; Johan C. van Dyk; Kamil Kwiatkowski; Marta Sosnowska


Fuel | 2014

Pyrolysis and gasification of a thermally thick wood particle – Effect of fragmentation

Kamil Kwiatkowski; Konrad Bajer; Agnieszka Celińska; Marek Dudyński; Jakub Korotko; Marta Sosnowska


Flow Turbulence and Combustion | 2013

Combustion of Low-Calorific Waste Biomass Syngas

Kamil Kwiatkowski; Marek Dudyński; Konrad Bajer


Journal of Statistical Physics | 2013

Spectral Properties of the Linearized Boltzmann Operator in L p for 1≤p≤∞

Marek Dudyński


Biomass & Bioenergy | 2013

Bioenergy from feathers gasification – Efficiency and performance analysis

Kamil Kwiatkowski; Jan Krzysztoforski; Konrad Bajer; Marek Dudyński


Fuel Processing Technology | 2015

Formation of fireside deposits in feather gasification and heat recovery systems — An industrial case study

Marta Sosnowska; Marek Dudyński; Dariusz Kardaś; Marek Klein; Kamil Kwiatkowski

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Jakub Korotko

Warsaw University of Technology

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Marek Klein

Polish Academy of Sciences

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Bartosz Górecki

Warsaw University of Technology

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D. Kardas

Polish Academy of Sciences

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Dariusz Kardaś

Polish Academy of Sciences

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Jan Krzysztoforski

Warsaw University of Technology

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M Janczarek

Gdańsk University of Technology

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