diff options
Diffstat (limited to '965/CH2/EX2.6/6.sci')
| -rw-r--r-- | 965/CH2/EX2.6/6.sci | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/965/CH2/EX2.6/6.sci b/965/CH2/EX2.6/6.sci new file mode 100644 index 000000000..17b978d1a --- /dev/null +++ b/965/CH2/EX2.6/6.sci @@ -0,0 +1,15 @@ +clc;
+clear all;
+disp("Thickness of insulation")
+La=1;//m
+Lb=0.04;//m
+kA=0.7;// W/(m*C)
+kB=0.48;//W/(m*C)
+kC=0.065;//W/(m*C)
+//Q1 = A(delT)/(La/kA+Lb/kB+)=A(delT)/(0.1/0.7+0.04/0.48)
+//Q2 = A(delT)/(La/kA+Lb/kB+Lc/kC)=A(delT)/(0.1/0.7+0.04/0.48+x/0.065)
+//Q2=(1-0.8)Q1
+//A(delT)/(0.1/0.7+0.04/0.48+x/0.065)=0.2*A(delT)/(0.1/0.7+0.04/0.48)
+//0.1/0.7+0.04/0.48+x/0.065 =(0.1/0.7+0.04/0.48)/0.2
+x=(0.2261/0.2-0.2261)/15.385;//m
+disp ("mm",x*1000,"thickness of the rock wool insulation should be = ")
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