What factors need to be considered when calculating thermal equilibrium?
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What other factors need to be considered besides the heat of reaction?
Of course, heat loss also needs to be taken into account.
Thermal equilibrium means: Heat in + Reaction heat = Heat out. Heat in includes the sensible heat and latent heat of the materials entering the system, while heat out includes the sensible heat of the materials leaving the system plus the heat losses of the system. For exothermic reactions, the reaction heat is given a positive value, whereas for endothermic reactions it is given a negative value
It is also necessary to consider the heat brought in and taken out by each material when entering and leaving the system； Heat loss ； The heat removed by reflux.
Heat entering the system – Heat leaving the system + Heat generated by the system (negative for consumption) = Heat accumulated in the system
I think it’s still necessary to choose the appropriate scope of consideration
First, determine the scope of calculation, and then use the following formula: Input heat = Output heat + Reaction heat + Accumulated heat. The input and output heats refer to the heat brought into and taken out of the system by the flow of the fluid and the heat exchange devices. In exothermic reactions, the heat of reaction takes a negative value, whereas in endothermic reactions the heat of reaction takes a positive value. Accumulated heat refers to the difference in enthalpy of a medium within the scope of calculation due to heating (or cooling). For a steady-state (or equilibrium) process, the accumulated heat is 0. This post was last edited by hgshy on 2009-4-10 08:22]