1 files changed, 31 insertions, 0 deletions
diff --git a/599/CH6/EX6.8.b/example6_8_b.sce b/599/CH6/EX6.8.b/example6_8_b.sce
new file mode 100755
index 000000000..1e36c1caa
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+++ b/599/CH6/EX6.8.b/example6_8_b.sce
@@ -0,0 +1,31 @@
+
+clear;
+clc;
+printf("\t Example 6_8_b\n");
+
+//tbar=(Ls/(A*Nc))*((Xcr-Xbar)*log((Xcr-Xbar)/(X2-Xbar)));
+
+//part(i)
+        // assuming only surface evaporation and assuming air moves parellel to  surface
+
+//Nc=G^0.71;            G=V*d
+//so NC = k* V^.71
+Ls=1000;              //mass of bone dry solid ais the drying surface
+A=55;                 //both upper surafce and lower surface are exposed
+v=.75;                //velocity of air
+Nc=.3*10^-3;          //in kg/m^2*s
+x2=.2;                //moisture content on wet basis  finally after drying
+Xcr=0.125;             //crtical moisture content
+X1=0.15;              //moisture content on dry basis  intially
+X2=0.025;             //moisture content on dry basis  finally after drying
+Xbar=0.0;        //equillibrium moisture 
+tbar=3.8077;       //time to dry material ,calculated from previous part
+V1=.75;                //old velocity
+V2=4;                  //new velocity
+Nc2=Nc*(V2/V1)^.71;    //in kg/m^2*s
+t2=(Ls/(A*Nc2))*((X1-Xcr)+(Xcr-Xbar)*log((Xcr-Xbar)/(X2-Xbar)));    //if air velocity is increased to 4
+t=tbar-t2/3600;            //time saved
+
+printf("\n the time saved , if air velocity is increased to 4 m/s: %f",t);
+
+//end
+\ No newline at end of file