Crude oil flowing at a rate of 15000 kg/h is to be heated from 20 to 57C exchanging heat with the residue of a distillation unit. The leftover flows at a rate of 129000 kg/h inside the shell and is to be cooled by the 146 C to 107 C. A flue is provided for heat exchange tubular steel exchanger, with an inside shell diameter of 23 in and with a passage in the shell and two in the lumens The alternator has 324 lumens BWG 14 with outer diameter in. and length 12 ft. The lumens are arranged squarely with a step 1 in. and supported by 25% reflectors spaced 9 in. apart. To be examined the suitability of this alternator (ie to calculate the allowable factor deposits). The partial heat coefficient inside the chambers is given equal to hi = 942 W/m2 o C. The properties of the residue are given below. cp = 2.20 J/g o C, = 5.2 cP, = 867 kg/m3 , k = 0.119 W/m2 oC