(1) Carry out energy balance for both conditions. Calculate the heat loss.

(2) Calculate the theoretical (or stoichiometric) amount of oxygen required to fully combust the gas for each steady state. Calculate the equivalence ratio () of your gas-air mixture.

(3) Calculate quantity of combustion by-products (mass of emissions and moisture).

\begin{tabular}{|l|l|l|l|} \hline condition 1 & Water, liter/min & Gas, liter / min & Air flow rate liter/min \\ \hline & 10 & 50 & 550 \\ \hline \end{tabular} \begin{tabular}{|l|l|l|l|l|l|l|l|l|} \hline No. & Condition & Time & Fluelgas, ('C) & Hot water output, ('C) & Heat exchanger water side, ('C) & Cold water Out & Reference, ('C) \\ \hline 1 & 1 & 13:53:59 & 22.1 & 21.7 & 21.7 & 21.5 \\ \hline \end{tabular}