Introduction to Chemical Engineering Thermodynamics $|8$th Edition$4\mathrm{.}33.$ Methane gas is burned completely with $30\%$ excess air at approximately atmos$-$

pheric pressure. Both the methane and the air enter the furnace at $30C$ saturated

with water vapor, and the flue gases leave the furnace at $1500C.$ The flue gases then

pass through a heat exchanger from which they emerge at $50C.$ Per mole of methane,

how much heat is lost from the furnace, and how much heat is transferred in the heat

exchanger?

Chapter $4,$ Problem $33$P