Desiging a procedure to calculate the Molar Enthalpy of combustion of Ethanol or Paraffin?

So how will I calculate the molar enthalpy of combustion of these two substances? The thing is that I only know how to make a simple calorimeter (a styrofoam one) and I have to carry out the procedure in cl. Would a simple calorimeter work? cause I won't be able to measure the change in the water temperature...