Jet Fuel Vapor Ignition within a Duct Thermal Insulation

نویسندگان

  • Guilherme Araújo Lima da Silva
  • Ricardo José Barbosa
  • Jorge Godoy de Jesus Zerbini
چکیده

A test setup was built to identify the ignition of jet fuel vapor-air mixtures within an insulation media and induced by a hot duct surface. The external diameter of the duct was 76.2 mm (3 inches) and covered with a 12.7 mm (0.5 inch) layer of ceramic fiber insulation, which had its pores completely filled with fuel vapor and air mixtures. The ignition was detected by thermocouples installed in insulation media and confirmed by chromatography and mass spectrometry. In order to design the experimental apparatus and allow behavior investigation in other operational conditions, a mathematical model was developed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Spark Ignition Energy Measurements in Jet A

Experiments have been carried out to measure the spark ignition energy of Jet A vapor in air. A range of ignition energies from 1 mJ to 100 J was examined in these tests. The test method was validated by first measuring ignition energies for lean mixtures of the fuels hexane (C6H6) and propane (C3H8) in air at normal temperature (295 K) and pressure (1 atm). These results agree with existing da...

متن کامل

A study of delayed spontaneous insulation fires

The phenomenon of gaseous thermal explosion within inert insulation material filled with a combustible evaporating fuel is considered. A novel approach to estimate the activation energy is suggested using the available experimental data and the relevant theoretical predictions concerning the delay ignition time.  2003 Elsevier Science B.V. All rights reserved. PACS: 82.40.P; 81.60.C; 47.55.M; ...

متن کامل

1D Raman/Rayleigh/CO-LIF line measurements of major and temperature in turbulent DME/air jet flame

Dimethyl ether (DME) is considered a promising alternative to diesel fuel in compression-ignition engines because of low particulate and NOx emissions along with high thermal efficiencies as well as improved auto-ignition characteristics due to its high cetane number. Recently, DME also has been selected as a prospective fuel candidate for the validation of turbulent combustion models organized...

متن کامل

Ignition limits of short-term overloaded electric wires in microgravity

Ignition phenomena of electric wires carrying short-term excess electric currents were investigated in microgravity with experiments and calculations. Microgravity experiments were conducted in 100 m and 50 m drop towers and calculations were carried out with a one dimensional cylindrical coordinate system. The experimental results showed that the limiting oxygen concentration (LOC) under a giv...

متن کامل

Effect of clothing ventilation on thermal insulation and vapor resistance

In this study, ventilation of clothing microenvironment, thermal insulation and vapor resistance of two jackets made of different materials were measured locally at front, back, side and arm by using an articulated thermal manikin in a controlled climate chamber (29±1°C, 40±10%RH). The various conditions of microenvironment ventilation were created by making the manikin stand and walk, combined...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007