Thermodynamic Reactivity Study during Deflagration of Light Alcohol Fuel-Air Mixtures with Water

Rafał Porowski (), Arief Dahoe, Robert Kowalik (), Joanna Sosnowa and Katarzyna Zielinska
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Rafał Porowski: Faculty of Energy and Fuels, AGH University of Krakow, 30-059 Kraków, Poland
Arief Dahoe: Knowledge Center for Explosion and Hydrogen Safety, Dutch Armed Forces, The Netherlands
Robert Kowalik: Faculty of Environmental Engineering, Geomatics and Renewable Energy Kielce, Kielce University of Technology, 25-314 Kielce, Poland
Joanna Sosnowa: Faculty of Power and Aeronautical Engineering, Institute of Heat Engineering, Warsaw University of Technology, 00-661 Warsaw, Poland
Katarzyna Zielinska: Faculty of Power and Aeronautical Engineering, Institute of Heat Engineering, Warsaw University of Technology, 00-661 Warsaw, Poland

Energies, 2024, vol. 17, issue 6, 1-26

Abstract: In this paper, a thermodynamic and reactivity study of light alcohol fuels was performed, based on experimental and numerical results. We also tested the influence of water addition on fundamental properties of the combustion reactivity dynamics in closed vessels, like the maximum explosion pressure, maximum rate of pressure rise and the explosion delay time of alcohol–air mixtures. The substances that we investigated were as follows: methanol, ethanol, n-propanol and iso-propanol. All experiments were conducted at initial conditions of 323.15 K and 1 bar in a 20 dm 3 closed testing vessel. We investigated the reactivity and thermodynamic properties during the combustion of liquid fuel–air mixtures with equivalence ratios between 0.3 and 0.7 as well as some admixtures with water, to observe water mitigation effects. All light alcohol samples were prepared at the same initial conditions on a volumetric basis by mixing the pure components. The volumetric water content of the admixtures varied from 10 to 60 vol%. The aim of water addition was to investigate the influence of thermodynamic properties of light alcohols and to discover to which extent a water addition may accomplish mitigation of combustion dynamics and thermodynamic reactivity.

Keywords: thermodynamic reactivity; combustion process; light alcohols; methanol; ethanol; n-propanol; iso-propanol (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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