【正文】
u—voltage between the electrode, V。 U—voltage of capacitor, V ? Measured Energy: energy measured in integration method E—energy measured, J。 m / s )1. pmax , Kst – Analysis (Linear fitting) 14 2. MEC Chemical No. C/(g/m3) pm /MPa Ignition? 1 0 N 2 40 N 3 40 N 4 40 N 5 45 Y No. C/(g/m3) pm /MPa Ignition? 1 0 N 2 45 N 3 45 N 4 45 N 5 50 N 6 50 Y Lycopodium HCMA MEC=45g/m3 MEC=50g/m3 15 2. MEC – Electrostatic No. C/(g/m3) pm /MPa Ignition? 1 0 N 2 40 N 3 45 N 4 50 N 5 50 N 6 50 N 7 55 Y No. C/(g/m3) pm /MPa Ignition? 1 0 N 2 50 N 3 75 N 4 75 N 5 75 N 6 80 N 7 80 Y Lycopodium HCMA MEC=55g/m3 MEC=80g/m3 16 2. MEC – Electrostatic Ignition8kJ No. C/(g/m3) pm /MPa Ignition? 1 0 N 2 40 N 3 40 N 4 40 N 5 45 Y No. C/(g/m3) pm /MPa Ignition? 1 0 N 2 45 N 3 45 N 4 45 N 5 50 N 6 50 Y Lycopodium HCMA MEC=45g/m3 MEC=50g/m3 17 Ignition Method Energy /kJ MEClycopodium/(g/m3) MEC HCMA /(g/m3) Chemical Ignition 45 50 Electrostatic Ignition 55 80 Electrostatic Ignition 8 45 50 Comparison of MEC in chemical ignition and electrostatic ignition For the MEC test, the results with electrostatic ignition are higher than the chemical ignition, but they could be the same by increasing the nominal energy of electrostatic ignition. 2. MEC – Analysis 18 Test of Spark Energy ? Nominal Energy: energy stored in the capacitor. It is estimated for the spark energy E—energy in the capacitor, J。 Ignition energy 0 . 5 5 0 . 6 0 0 . 6 5 0 . 7 0 0 . 7 5 0