Basic Programs for Chemical Engineers by Dennis Wright (auth.)

By Dennis Wright (auth.)

The microcomputer has placed an unlimited quantity of computational strength within the palms of the training chemical engineer. despite the fact that, a microcomputer is of little use except there are courses to be had to resolve chemical engineer­ ing difficulties; during this e-book, i've got prepare a set of simple seasoned­ grams that w~ll support the working towards engineer be extra effective and ready to clear up complicated difficulties which are commonly dealt with on mainframe com­ puters. The plant engineer will locate the booklet really precious. The plant en­ gineer is calle~ upon to enquire difficulties that variety from uncomplicated difficulty capturing to tQe particular layout of complicated chemical crops. the bigger proj­ ects tend to be add-on jobs to the common tasks of protecting a chemical plant working. In t~day's enterprise weather, solutions to difficulties has to be acquired quick and ~ccurately. the pc is in a position to trying out speculation, thereby allo~ing engineers to guage substitute recommendations to difficulties quick and supply solutions to management's questions that consistently shift just like the sand~ in a desert.

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The best way to explain the program is by a demonstration. PROBLEM: Solve the two equations defined as Fl == X2 + y2 F2=2X+Y - 3 SOLUTION: Starting at line 1010, enter the equations as follows: 1010 F(I)=X(I)[2-X(2)[2-3 1020 F(2) =2*X(I) +X(2) Now type RUN and enter the following data: 1. 2. 3. 4. 5. 55229 MATHEMATICS 27 EXAMPLE READY RUN SIMULTANEOUS NONLINEAR EQUATIONS TYPE THE NUMBER OF EQUATIONS? 2 INPUT THE MAX NUMBER OF ITERATIONS? 0005)? 0001 TYPE THE INITIAL GUESS FOR EACH VARIABLE X1=?

46 BASIC PROGRAMS FOR CHEMICAL ENGINEERS ArlAj ratio to get an effective shell side fouling factor for a finned unit. The program is highly structured to allow you to program in preferred heat transfer and pressure drop relationships. , lower Vj). Safety factors of 10-15070 appear adequate. Equations for DBLPIPE Tube Side Al = (D1I12? 4 * R1HO * D1I12) Shell Side WP :c:: (D2 * 11" - NF * B + NF * H * 2)/12 A3 = [(D2/l2? 1416 U EXAMPLE RUN DOUBLE PIPE HEAT EXCHANGERS FORCED CONVECTION NO CHANGE OF PHASE SYSTEM TITLE:?

TEST NO. TUBES =0 TUBE ID/OD: 0/0 PITCH(IN) =0 35 36 BASIC PROGRAMS FOR CHEMICAL ENGINEERS NO. TUBES, ID, OD, PITCH? 00 PITCH = TRIANGULAR SQUARE(S} OR TRIANGULAR(T} PITCH? T TUBE LENGTH (FT) =0 NUMBER OF PASSES =0 TUBE LENGTH, NO. OF PASSES? 10,2 TUBE FLUID: FOULING FACTOR =0 NAME OF FLUID, FOULING FACTOR? 0005 TEMP IN(F}=0 TEMP OUT(F) = 0 SPECIFIC HEAT (BTUlLB-F)=0 TEMP IN, TEMP OUT, SPECIFIC HEAT? 85,100,1 VISCOSITY(CP) = 0 DENSITY (LB/FT3) =0 VISCOSITY, DENSITY? (BTUIFT-HR-F}=0 THERMAL COND.?

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