Exercise-3

The heat requirement of a process is  kW. The furnace is fired with coal which has  C. The NCV of coal is 27900  kJ/kg. The process is carried out at 1600K. Products of combustion analyse    and   Calculate fuel consumption

Solution :

Solution is presented in brief. The readers should calculate the values given

Since the POC temperature is not given. It is assumed that POC exit the furnace at the process temperature, i.e. 1600K.

Basis of calculation is 298K and 1 kg coal

By carbon balance, the amount of POC is 0.486 kg mol with the following composition

Heat to POC can now be calculated by using Cp values. The calculated value of heat to POC is 22063kJ.