There is an evaporation system with steam condensation, according to the following figure: TA, sal = 90 F CONDENSER ma F = 1000 F TA = 60 F XE = 0,1 Te = 78 F L XL myap Tv = 250 F Lb Flows are given in and temperatures in F. The global heat transfer coefficients are also h BTU known, which for both the evaporator and the condenser have a value of 200 h*ft2*F a) Write the equations that model the system. Include relevant balances and design equations. For balances, express all enthalpies as a function of Cp's and latent heats (a). b) If all thermodynamic properties are known, how many degrees of freedom does the system have