Heat of reactions
 

I have my fuel coal_mv that i know the heat of reaction about 32MJ(it is senn in the tab of materials). i dont know if this Heat of reaction is calculated with the heat of reaction of volatiles. i say that because in the tab of materials i noticed that coal_mv, coal_hv and coal_lv have the same heat of reactions. the total amount of heat reaction in my problem it will help me to calculate the total flow rate of my fuel. so i suppose that i need to find the heat of reactions of volatiles or define it. can anyone help me?
thank you.