Deflagrations of H2-Air and CH4-Air lean mixtures in a vented multi-compartment environment
| Autor: | Marco Nicola Mario Carcassi, Fabio Fineschi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Energy carrier
Engineering Hydrogen Waste management business.industry Mechanical Engineering chemistry.chemical_element Building and Construction Combustion Pollution Industrial and Manufacturing Engineering Methane law.invention Ignition system chemistry.chemical_compound General Energy chemistry law Deflagration Electrical and Electronic Engineering business Volume concentration Civil and Structural Engineering Flammability limit |
| Popis: | The use of hydrogen as an energy carrier for the future is conditioned by its safety. Hydrogen is commonly and incorrectly perceived as being a more dangerous gas than methane, since the latter is widely used and thus considered to be acceptable. The paper analyses deflagrations of H2/air and CH4/air mixtures at low concentrations (close to the lower flammability limits) and, in particular, focuses on the phenomenology and dangerous aspects of this kind of combustion. The related possible accidents involve closed environments (garages, laboratories, service rooms, internal volumes of buses and cars, etc.) where ignition sources are present. In these cases, combustion probably takes place as soon as the fuel concentration reaches the lower flammability limit. Hydrogen and methane are compared on the basis of (1) their general energetic characteristics, (2) a theoretical examination of the main parameters related to the combustion phenomenon, and (3) the experimental results of the LargeView2 apparatus, where more than 300 deflagration tests were made with both gases in a vented multi-compartment container. |
| Databáze: | OpenAIRE |
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