Calculation method for decomposition heat during combustion
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This post was last edited by Shijiao Daxia on 2024-10-13 09:12. The method for calculating the heat of decomposition during combustion is as follows: Q_decomposition = 12600 × V_CO2 + 10800 × V_H2O = 12600 × ∫CO2 × (V_CO2) + 10800 × ∫H2O × (V_H2O). Here, (V_CO2) and (V_H2O) represent the amounts of CO2 and H2O at the time of thermal decomposition; these values can be determined through calculations based on complete combustion. ∫CO2 and ∫H2O represent the degree of decomposition, which is related to temperature and gas partial pressures. The higher the temperature, the greater the degree of decomposition; the higher the gas partial pressure, the smaller the degree of decomposition. The values of the degree of decomposition of CO2 and H2O at different temperatures and partial pressures can be found in the table.
This post was last edited by Shijiao Daxia on 2024-10-13 09:08. Please share your opinions
The method for calculating the heat of decomposition during combustion is as follows: first, determine the volumes of carbon dioxide (CO2) and water vapor (H2O) at complete combustion, and then calculate the heat of decomposition based on their degree of decomposition and the given heat of decomposition multiplier. The calculation formula is: Decomposition heat of Q = 12600 × degree of decomposition of CO2 × VCO2 + 10800 × degree of decomposition of H2O × VH2O. Here, VCO2 and VH2O represent the volumes of carbon dioxide and water vapor respectively at complete combustion; the degree of decomposition is related to temperature and gas partial pressures, and the specific values can be found in the corresponding tables. The degree of decomposition increases at high temperatures, whereas it decreases as the gas partial pressure increases. .