How do I know the expression for the energy equation?

Hello,developers!
The equation of conservation of energy is used when coupling fluidized beds with heat transfer models, incorporating convective heat transfer, conductive heat transfer, radiative heat transfer, and chemical reaction heat.For these heat transfers, I would like to ask what is their expression? Is it something that can be directly derived in mfix?
Looking forward to any possible answers, thanks!


I’d also like to ask what the heat of reaction is set to here?
How are the units of J/kmol and kJ/mol converted?

Unit conversion is covered in the MFiX user manual at https://mfix.netl.doe.gov/doc/mfix/23.2/html/faq.html?highlight=units#what-system-of-units-does-mfix-use

The energy equation, etc, are covered in the MFiX Theory Guide