Výsledky vyhledávání - "JAKUB ČESPIVA"

Akademický článek

Explosion characteristics of methane at low and elevated initial temperatures

Autor: Jan Skrínský, Tadeáš Ochodek, Jakub Cespiva, Ján Vereš

Publikováno v: Chemical Engineering Transactions, Vol 90 (2022)

In the millisecond time domain, deflagration curves of the methane, CH4, have been observed at low and elevated initial temperatures. 20-L closed spherical chamber have been adopted for low and high initial temperatures measurements. Methane air mixt

Externí odkaz: https://doaj.org/article/9d9a04f8be714897a2b3d0ab42ff95e3

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Akademický článek

The role of burning velocity in the validity of hybrid mixtures

Autor: Matouš Helegda, Jan Skrínský, Tomáš Jastrzembski, Ján Vereš, Jakub Cespiva, Tadeáš Ochodek

Publikováno v: Chemical Engineering Transactions, Vol 90 (2022)

A small quantity of flammable gas mixed with dust can cause a large explosion with severe consequences. In this study, hybrid mixtures explosion tests were performed in constant volume 0.02 m3 and 1 m3 spherical vessels. Fifty pressure-time curves we

Externí odkaz: https://doaj.org/article/2d16eceb9a5948a2a5b2fea803647618

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Akademický článek

Coke oven gas-to-liquid synthesis: Experimental approach

Autor: Ján Vereš, Jakub Čespiva, Jan Skřínský, Tadeáš Ochodek

Publikováno v: Energy Reports, Vol 9, Iss , Pp 70-75 (2023)

Carbon resource utilisation is one of the many options to reduce carbon emissions and create additional value from ecological and economic points of view. The utilisation of e.g. process or residue gases is carried out through different technological

Externí odkaz: https://doaj.org/article/abd62978f936479ea5a4c2c3da17b9df

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Akademický článek

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

Autor: Jiří Ryšavý, Jakub Čespiva, Lenka Kuboňová, Milan Dej, Katarzyna Szramowiat-Sala, Oleksandr Molchanov, Lukasz Niedzwiecki, Wei-Mon Yan, Sangeetha Thangavel

Publikováno v: Fire, Vol 7, Iss 3, p 87 (2024)

The possibilities of pistachio shell biochar production on laboratory-scale gasification and pyrolysis devices have been described by several previous studies. Nevertheless, the broader results of the pistachio shell co-gasification process on pilot-

Externí odkaz: https://doaj.org/article/132e96c001ab4817a2755408c71fbb8d

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Akademický článek

Torrefaction and gasification of biomass for polygeneration: Production of biochar and producer gas at low load conditions

Autor: Jakub Čespiva, Lukasz Niedzwiecki, Mateusz Wnukowski, Krystian Krochmalny, Jakub Mularski, Tadeáš Ochodek, Halina Pawlak-Kruczek

Publikováno v: Energy Reports, Vol 8, Iss , Pp 134-144 (2022)

In this paper, a matter of biomass torrefaction and gasification is closely looked at from different points of view during low load and low equivalence ratio regime, defined as λ=0.08. Considering gas production, the hot gas efficiency of conversion

Externí odkaz: https://doaj.org/article/f74449ac84dc4b13b6dc434e9363211e

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Akademický článek

The effect of low temperature on the explosion characteristics of a methane/air mixtures

Autor: Jan Skřínský, Tadeáš Ochodek, Ján Vereš, Jakub Čespiva

Publikováno v: Energy Reports, Vol 8, Iss , Pp 303-308 (2022)

Prevention and mitigation of unwanted explosions require knowledge of explosion characteristics. Available explosion data are not always adequate for use in a particular application. For example, predicting the behavior of gas explosions at a lower t

Externí odkaz: https://doaj.org/article/8c915d75a2c7496babbd4594d54a8710

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