Power plant question, please solve it in detail, thank you

Question 5: The desalination of sea water is carried out after a MED station has two effects, passing successively in two evaporators (figure). The stean used in the first evaporator condenses completely in this one: its pressure is 3.5 bars and its mass flow V0 is 9104kg/h. The steam coming from the evaporation in the first effect V1 is the heating steam of the second effect: it also condenses completely. The mass flow rate of the sea water A is 5105kg/h with a salt concentration w10=42% : its temperature is 80C at the inlet to E1. The boiling temperatures inside the evaporators E1 and E2 are 120C and 90C respectively. - Specific heat of the scawater: Cpsw=4,0kJkg1K1 - Assume that the mass enthalpies of vaporization of water are the same for pure water and for brine solutions: hfg(T)= 2535 - 2.9T; with T in C and hfg in kJ.kg1 ( hfy; latent heat) - The pressure P, in bar, and the temperature T, in C, of a boiling liquid are related by the relation: P=(T/100)4 38 ut Question 5: 1. Determine the mass flow rate of evaporated water V1 in the first evaporator 2. Deduce L1 the brine mass flow rate at the outlet of the first evaporator and w1 the salt mass fraction of this brine. 3. Determine the mass flow rate of evaporated water V2 in the second evaporator. 4. Deduce L2 (mass flow rate of the brine at the outlet of the second evaporator) and w2, corresponding mass fraction. 5. Calculate the ratio between the total mass of distillate and the mass of heating steam supplied