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1
Content available Innovative Method of Forecasting the Generator Gas Composition after the Process of Pyrolysis and Gasification
Slowak Anna Maria
Rocznik Ochrona Środowiska
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2022
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Tom 24
97--109
EN
The article presents a new approach to forecasting producer gas composition. Thermochemical treatment of biomass was presented as an effective method of producing flammable gas. The methods of predicting the gas composition of the generator are described, and then its efficiency depends on the device’s parameters. In order to create a method for forecasting gas composition, the authors’ works were used as the basis on which the energy characteristics of the gases obtained were assessed. It was assumed in this paper that it is essential to understand the influence of each parameter on the energy characteristics of the gas. It made it possible to optimize the composition and predict thermal characteristics. This article presents the results of experimental studies on biomass gasification and a mathematical model based on Gibbs free energy.
2
Content available Presentation of Experimental Biomass Gasification with Minimizing Gibbs Free Energy Mathematical Model
Pavlenko Anatoliy, Slowak Anna Maria
Rocznik Ochrona Środowiska
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2020
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Tom 22, cz. 2
880--891
EN
The paper consists the results from the conducted experiment and the mathematical model of it. The presented process is biomass gasification and the modelling is based on complex parameter that is maximum thermodynamic efficiency and use the Gibbs free energy function and Lagrange multiplier. Referring to European Union strategy in terms of energy use it is highly recommended to increase the share of renewable energy in total energy production. The biomass is one of the most important sources of energy. Listed above methods of mathematical calculations let as define the composition of the gas produced and the efficiency that was reached. Also the precision of the model was evaluated. The effect of the work done is the possibility to use it to state the best condition for the process of biomass gasification technology.
PL
Artykuł przedstawia wyniki przeprowadzonego eksperymentu i jego model matematyczny. Przedstawiony proces dotyczy zgazowania biomasy, a modelowanie opiera się na złożonym parametrze, jakim jest maksymalna wydajność termodynamiczna, z wykorzystaniem funkcji energii swobodnej Gibbsa i mnożnika Lagrange'a. Nawiązując do strategii Unii Europejskiej w zakresie zużycia energii, zdecydowanie zaleca się zwiększenie udziału energii odnawialnej w całkowitej produkcji energii. Biomasa jest jednym z najważniejszych źródeł energii. Wymienione powyżej metody obliczeń matematycznych pozwalają określić skład wytwarzanego gazu i osiągniętą wydajność. Oceniono także precyzję modelu. Efektem wykonanych prac jest możliwość określenia najlepszych warunków prowadzenia procesu technologii zgazowania biomasy.
3
Content available Thermodynamic study of phase equilibrium of superionic alloys of Ag3SBr1-xClx system in the concentration range 0.0–0.4 and temperature range 370–395 K
Moroz M. V., Prokhorenko M. V., Prokhorenko S. V., Reshetnyak O.V.
Archives of Thermodynamics
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2017
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Vol. 38, no. 1
27--38
EN
Thermodynamic assessment of the phase stability of the solid solutions of superionic alloys of the Ag3SBr1-xClx (I) system in the concentration range 0 ≤ x ≤ 0.4 and temperature range 370–395 K was performed. Partial functions of silver in the alloys of solid solution were used as the thermodynamic parameters. The values of partial thermodynamic functions were obtained with the use of the electromotive force method. Potential-forming processes were performed in electrochemical cells. Linear dependence of the electromotive force of cells on temperature was used to calculate the partial thermodynamic functions of silver in the alloys. The serpentine-like shape of the thermodynamic functions in the concentration range 0–4 is an evidence of the metastable state of solid solution. The equilibrium phase state of the alloys is predicted to feature the formation of the intermediate phase Ag3SBr0.76Cl0.24, and the solubility gap of the solid solution ranges of Ag3SBr0.76Cl0.24 and Ag3SBr.
4
Thermodynamics of Cu-Sn-X (X = Bi, Nb, Sb, Zn) liquid alloys
Romanowska J.
Inżynieria Materiałowa
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2010
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Vol. 31, nr 3
724-727
EN
This paper presents the results of experimental investigations of Cu-Sn-X (X = Bi, Nb, Sb, Zn) alloys and the comparison of X activity calculated on the basis of experimentally obtained formulas with the values that could have been obtained by the use of the symmetric model.
PL
W pracy porównano wartość aktywności składnika X w stopach Cu-Sn-X (X = Bi, Nb, Sb, Zn) obliczone na podstawie doświadczalnie wyznaczonych równań z wartościami, które mogą być określone z zastosowaniem modelu symetrycznego.
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