In an allyl chloride production plant, kettle type vaporizer is used to vaporize liquidvapor mixture containing propylene, hydrochloric acid, chlorine and chlorides. The vapor fraction of feed stream is 0.3.503.32kmol/h of liquid-vapor mixture enters the vaporizer at 45.3C and leaves at -37.9 which is the bubble point of mixture at 1.6 atm. Water enters the U-tubes (L=3m,d0=0.0254m,di=0.0218m) at 50C and leaves at 35C. a. determine the number of tubes and overall heat transfer coefficient, b. check your design considering maximum heat flux, velocity of water in tubes, and freeboard. Liquid-vapor mixture Water (Pc)mix=53.57atmk=0.598W/mKHvapmix=18017kJ/kmolCp=4.18kJ/kgKCpmix=101.2kJ/kmolK=1000kg/m3=0.0001kg/msRf,o=0.0005m2K/WRf,i=0.0003m2K/W Thermal conductivity of tube matcrial is 14W/mK. Formulas U1=hnb1+2kdoln(dido)+didohi1+Rf,o+didoRf,iNu=1.86[L/diRePr]1/3Re10000Pr=PcPhnb=0.104(Pc)0.69(q)0.7[1.8Pr0.17+4Pr1.2+10Pr10]qmax=3.67104PcPr0.35(1Pr)0.9Db=d0(0.249Nt)1/2.207W/m2KTakeDbDs=2h=0.08m Start the calculations by assuming U=740W/m2K for the first iteration. Perform only two iterations