G5 Latifa team An old idea now coming into vogue for efficient heat transfer is to operate a sub- merged combustion bumer (see Figure P26.19) to give hot water. The fuel, natural gas, may be assumed to be CH, and is burned using 5% excest air. The immersion of the burner is such that the flue gases leave the water in equilibrium with it. The feed water enters the dehumidifier section at 190F and the hot water leaves from the bot- tom of the combustion chamber at 310F The CH and air enter dry at 60'F Calcu Feedwater 190 Fun Gas 310'F 110 psa XXXX XX XXXX dry OF 310 rum . Hot Water 310'F late the lb of 310F water provided per lb of CH bumed. Acume that the Nue ga leaving the vessel is at 30F and 110 psia in equilibrium with the hot water, and tha the tank is insulated