So I am modelling in Chemkin and want to include phase change phenomenon in my model. But there's no capability of phase change in Chemkin so I have to think of some out of the box method for this.
So I have a mixture of H2O(g), O2(g) at 1080 K and this mixture mixes with C2H5OH(l) at 298 K. Now in the real world, at this temperature C2H5OH(l) will boil and form C2H5OH(g) as ethanols B.P is 351 K. The process is happening at 10 atm. I know the latent heat of vaporization of ethanol, so how do I calculate the temperature drop of this overall mixture?
So I will know the total amount of heat loss caused by 'm' amount of ethanol(l) boiling by applying
Q=m*hvp, where hvp=latent heat of vaporisation.
One approach I can think of is, we know total enthalpy of mixture at say t=0 sec just before mixing and know the amount of heat loss, Q, so we know total enthalpy at say some t= x sec after mixture has come to equilibrium state, by applying
'total enthalpy at x sec = total enthalpy at t=0 sec - Q'.
So do I just use total enthalpy = sum of individual enthalpies of each component and try out different temperatures till I get the desired total enthalpy at x? Will it be as simple as this or there's some catch in between? Any help will be appreciated.
P.S-( Chemkin assumes every species is a ideal gas so enthalpy is only a function of temperature, neglecting effect of pressure and entropy).
Also can someone put out a link for syntax while writing chemical symbols, I searched in the help section but couldn't find anything.