b | stoichiometry of deposit material |

C | gas phase concentration, mol/m |

C | initial gas phase concentration, mol/m |

C | solid phase concentration, mol/m |

C | initial solid phase concentration, mol/m |

C | peak initial solid phase concentration, mol/m |

C | gas phase heat capacity, J/mol・K |

C | solid phase heat capacity, J/mol・K |

D | dispersion coefficient, m |

d | diameter of the exhaust pipe |

E | activation energy, J/mol |

h | heat transfer coefficient in the pipe, J/s・m |

h | outside heat transfer coefficient from pipe to ambient, J/s・m |

ΔH | heat of reaction, J/mol |

k | reaction rate coefficient, m |

k | pre-exponential factor, m |

L | length of exhaust pipe, m |

m | 1/4 of the pipeline length, m |

r | radius of exhaust pipe, m |

Q | heat dissipation, J/m |

Q | heat accumulation, J/m |

R | ideal gas constant, J/mol∙K |

t | time, sec |

T | solid phase temperature, K |

T | initial solid temperature, K |

T | gas phase temperature, K |

T | initial gas phase temperature, K |

T | ambient temperature, K |

u | gas velocity, m/s |

z | distance along the pipe, m |

ρ | density of solid phase, mol/m |

ρ | density of gas phase, mol/m |

λ | thermal conductivity of the gas phase, W/mol∙K |