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+//Transport Processes and Seperation Process Principles

+//Chapter 4

+//Example 4.8-2

+//Principles of Steady State Heat Transfer

+//given data

+//si units

+Tsat=89.44;

+Tw=87.8;

+Tf=(Tsat+Tw)/2;

+D=0.0254;

+hf=2657.8-374.6;//latent heat using steam tables

+rho1=60.3*16.018;//density of condensed steam

+rhov=0.391;//density of ateam at 10 psia

+mu1=3.24e-4;

+kt=0.675;

+L=0.305;

+Tsat=193;//in K

+delT=3.33;

+g=9.806;

+//assuming laminar film

+Nu=1.13*(((rho1^2)*g*hf*1000*(L^3)/(mu1*kt*(delT)))^(0.25));

+h=Nu*(kt/L);

+A=%pi*D*L;

+q=h*A*(Tsat-Tw);

+m=q/hf;

+kteng=0.390;//

+Leng=1;//in english units

+heng=Nu*(kteng/Leng);

+Deng=1/12;

+Aeng=%pi*Deng*Leng;

+mprintf("avg HT coefficient= %f W/m2 K in si units",h)

+mprintf("avg HT coefficient= %f btu/h ft2 F in english units",heng)