BS-I

The facility BS-I is a spherical vessel of 8 liters with 2 optical access quartz windows. It is dedicated to the study of flammability limits of gases and hybrid fuels (dust/gases). It is equipped with an electrical heating to be able to vary the initial temperature up to 100°C The ignition energy is controlled and can be varied over a very large domain (less than a millijoule up to 2 J). Ignition system can be spark based using 2 tungsten electrodes or laser based using an Nd-YAG laser. High frequency pressure transducer and high-speed imaging are used to monitor the successful/unsuccessful ignition events. In the event of a successful ignition, the overpressure is monitored. A gas chromatographer is used to analyze the gaseous reactants and products. In case of dust, samples are collected and analyzed via TEM and SEM techniques.

Dimensions :

• Inner diameter: 250 mm
• Internal volume: 8 L
• Optical windows diameter: 60 mm

Pressure / Temperature :

• 50 bar / 100°C

Operations at this facility began in 1996 for various research purposes such as flammability limits, gaseous fuels and dust and Laminar flame speed.

Related publications :
– F. Saceleanu, M. Idir, N. Chaumeix, J.Z. Wen (2018). Combustion characteristics of physically mixed 40 nm aluminum/copper oxide nanothermites using laser ignition. Frontiers in Chemistry, 6 (SEP), 465,
– F. Saceleanua, J. Z. Wen, M. Idir, and N. Chaumeix (2016). Laser Assisted Ignition and Combustion Characteristics of Consolidated Aluminium Nanoparticles, Journal of Nanoparticle Research, 18 (11), 328,
– R. Mével, J. Sabard, J. Lei, N. Chaumeix (2016). Fundamental combustion properties of oxygen enriched hydrogen/air mixtures relevant to safety analysis: Experimental and simulation study. International Journal of Hydrogen Energy 41 (16), 6905-6916,
– J. Biet, M. Ndem, M. Idir, N.Chaumeix (2014). Ignition by Electric Spark and by Laser-Induced Spark of Ultra-Lean CH4/Air and CH4/CO2/Air Mixtures at High Pressure, Combustion Science and Technology 186 (1), 1-23,
– J. Sabard, N. Chaumeix, A. Bentaib (2013). Hydrogen explosion in ITER: Effect of oxygen content on flame propagation of H2/O2/N2 mixtures, Fusion Engineering and Design 88 (9-10), 2669 – 2673,