URGENT! It is desired to concentrate to 50% in an evaporator where 30% NaOH at 93C at a temperature of 4000 kg/h does not hold. The pressure of the saturated steam used for heating is 445.6 kPa and the steam working pressure of the evaporator is 47.4 kPa. Calculate BPR, hF, hv, hL and A for the given system. (Cp-1.884 kJ/kg.K, Geankoplis 3rd Edition, use the steam table from the lecture examples.)

a) 42C,360kJ/kg,2723kJ/kg,624kJ/kg,2122kJ/kg b) 52C,320kJ/kg,2723kJ/kg,604kJ/kg,2152kJ/kg c) 42C,320kJ/kg,2723kJ/kg,624kJ/kg,2152kJ/kg d) 52C,360kJ/kg,2752kJ/kg,604kJ/kg,2152kJ/kg