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Adiabatic Flame Temperature Hydrogen
On the Adiabatic Flame Temperature of Hydrogen
Smell the combustion of hydrogen, the temperature of the adiabatic flame is related to many things. Hydrogen, the pure quality, the heat generated during combustion, and the temperature it can reach in the adiabatic environment is the weight of academic research.
The principle of combustion, hydrogen and oxygen, the transformation method is:\ (2H_ {2} + O_ {2}\ rightarrow2H_ {2} O\). The change of energy in this process is generated by the breaking of bonds. The bond between hydrogen and oxygen is broken, the new water bond is formed, and the energy is released.
When adiabatic, there is no heat exchange with the outside world. The heat released is used to raise the temperature of the product. The product is mostly water vapor. Let the initial hydrogen and oxygen temperature be\ (T_ {0}\), the pressure be\ (p_ {0}\), and the product temperature after combustion is\ (T_ {ad}\) (i.e. adiabatic flame temperature).
The energy is conserved, and the reaction heat\ (Q_ {r}\) is equal to the enthalpy change of the product\ (\ Delta H_ {p}\). The reaction heat can be calculated from the enthalpy of formation. The enthalpy of formation of each substance is known. For example, the enthalpy of formation of hydrogen is\ (0\), the enthalpy of formation of oxygen is also\ (0\), and the enthalpy of formation of water is a fixed value.
The enthalpy change of the product is related to temperature, and its heat capacity\ (C_ {p}\) varies slightly with temperature, which can be approximated as a constant, or obtained by empirical formula. From\ (\ Delta H_ {p} =\ int_ {T_ {0}} ^ {T_ {ad}} C_ {p} dT\), combined with\ (Q_ {r}\), can be solved\ (T_ {ad}\).
However, the actual situation is different from the ideal. Combustion or incomplete, impurities and pressure changes are affected. Pressure rise, adiabatic flame temperature or rise; impurity presence, or endothermic, causes temperature drop.
Exploring the adiabatic flame temperature of hydrogen is of great significance for hydrogen energy utilization and combustion equipment design. Understanding its temperature can optimize the combustion process, improve energy efficiency, and reduce pollution.
Smell the combustion of hydrogen, the temperature of the adiabatic flame is related to many things. Hydrogen, the pure quality, the heat generated during combustion, and the temperature it can reach in the adiabatic environment is the weight of academic research.
The principle of combustion, hydrogen and oxygen, the transformation method is:\ (2H_ {2} + O_ {2}\ rightarrow2H_ {2} O\). The change of energy in this process is generated by the breaking of bonds. The bond between hydrogen and oxygen is broken, the new water bond is formed, and the energy is released.
When adiabatic, there is no heat exchange with the outside world. The heat released is used to raise the temperature of the product. The product is mostly water vapor. Let the initial hydrogen and oxygen temperature be\ (T_ {0}\), the pressure be\ (p_ {0}\), and the product temperature after combustion is\ (T_ {ad}\) (i.e. adiabatic flame temperature).
The energy is conserved, and the reaction heat\ (Q_ {r}\) is equal to the enthalpy change of the product\ (\ Delta H_ {p}\). The reaction heat can be calculated from the enthalpy of formation. The enthalpy of formation of each substance is known. For example, the enthalpy of formation of hydrogen is\ (0\), the enthalpy of formation of oxygen is also\ (0\), and the enthalpy of formation of water is a fixed value.
The enthalpy change of the product is related to temperature, and its heat capacity\ (C_ {p}\) varies slightly with temperature, which can be approximated as a constant, or obtained by empirical formula. From\ (\ Delta H_ {p} =\ int_ {T_ {0}} ^ {T_ {ad}} C_ {p} dT\), combined with\ (Q_ {r}\), can be solved\ (T_ {ad}\).
However, the actual situation is different from the ideal. Combustion or incomplete, impurities and pressure changes are affected. Pressure rise, adiabatic flame temperature or rise; impurity presence, or endothermic, causes temperature drop.
Exploring the adiabatic flame temperature of hydrogen is of great significance for hydrogen energy utilization and combustion equipment design. Understanding its temperature can optimize the combustion process, improve energy efficiency, and reduce pollution.
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