Account for heat of reaction, sensible heat and work.
Energy balance includes sensible heat, latent heat, heats of reaction and work: ΔH=Q-W_s for steady open systems. Use enthalpy of formation or heat of combustion; adiabatic reactor temperature rise; heat integration reduces utility cost.
A reactor's cooling duty equals heat released by reaction minus enthalpy to heat the products.
Energy balances in processes show how much heat must be added or removed, which sets the sizes of heaters, coolers and boilers.
Account for heat of reaction, sensible heat and work.
Energy balances in processes show how much heat must be added or removed, which sets the sizes of heaters, coolers and boilers.
Enthalpy flows in and out, heat added or removed, shaft work, and changes in kinetic and potential energy when they matter.
The enthalpy change when a reaction occurs at constant pressure, which tells you whether the process must be heated or cooled.
Typical applications include sizing a reboiler for a distillation column, calculating the cooling duty of a reactor exothermic reaction and estimating the heat needed to warm a feed stream to reaction temperature.
Study "Material balances" first (topic 65 of 100 in Materials & Chemical). It covers the groundwork this topic builds on.
Reference states. Hess's law. Heat capacity polynomials.
A reactor's cooling duty equals heat released by reaction minus enthalpy to heat the products.
The next topic is "Unit operations", which builds directly on this one.
It is classed as Intermediate in Materials & Chemical (topic 66 of 100). It is an intermediate topic. Work through the beginner topics in Materials & Chemical first.
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