Question

Acetylene and dry air enter an isobaric combustion chamber at 298K and 1atm. There is a 10% excess of air (a lean mixture) at the inlet.

A) What is the adiabatic flame temperature (K) of the mixture?

B) What is the equilibrium concentration (by volume) of NO, YNO, in the products when considering the reaction 1 2N2 + 1 2O2 *) NO at the adiabatic flame temperature?

C) Now consider a reaction with a 100% excess of air (a lean mixture) at the inlet. What is the new adiabatic flame temperature and equilibrium concentration (by volume) of NO?

You may use EES to solve for the temperatures but you must outline the steps you took in writing and provide a copy of your EES code.

Answer 1

ANSWER:

1. in adibatic fire temperature method the molar heat ability of the crop at stable force has equation for every compound.

(Sensible heat in air + fuel) + heat of combustion - heat awestruck due toward dissociation of products of combustion = sensible warmth in poc + heat losses to surrounding

Delta H = CP dT

2. The postulation of complete incineration is an estimate as it disregard the possibility of dissociation of on fire products. added products resolve be formed.

3. Use equation mentioned in step 1 to solve it