(Solved): solve all steps Problem 4: A three-effect MED-FF (feed forward) operates at the following condition ...
solve all steps
Problem 4: A three-effect MED-FF (feed forward) operates at the following conditions. Plant capacity =5kg/s Steam temperature =115∘Chf,g,sat=2256Kj/kg Intake seawater salinity =XF=42,000mg/LXL=52,000mg/LX1=44,891mg/L Specific heat at constant pressure of seawater =4.18K/kg. ∘C Load of third effect (q)=13.5KW/m2 (Fixed for all effects) Intake seawater temperature =20∘C Heat transfer coefficient in effect 1=4.5kW/m2.∘C(hf,g,1=2266.36Kj/kg)(hf,g,2=2277.00Kj/kg)(hf,g,3=2288.00Kj/kg) Heat transfer coefficient in effect 2=3.0KW/m2. Heat transfer coefficient in effect 3=2.5KW/m2.∘C Determine: a) Feed flow rate b) ΔT1,ΔT2 and ΔT3 c) D1 and D2 (distillate) d) L1 (concentrate) e) A3 f) GOR