4. Heat transfer analysis of biomass combustion
The chemical energy present in the fuel is converted to heat
energy during the combustion process and the generated heat can
be used for various applications. The heat released from the combustion
of the fuel is equal to the sum of the heat exchanger by
convection and radiation from the external surface of the
combustor, and the heat carried away by exhaust gasses.
The amount of chemical energy supplied and the useful heat
energy released from the combustor are important factors to
analyse the system performance, and these factors are equal, according
to the principle of the conservation of energy. The generated
heat during the combustion was lost to the surroundings by
heat carried away by the flue gases, and heat transfer by convection
and radiation from the external surfaces of the combustor.