diff options
Diffstat (limited to '965/CH2/EX2.26/26.sci')
| -rw-r--r-- | 965/CH2/EX2.26/26.sci | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/965/CH2/EX2.26/26.sci b/965/CH2/EX2.26/26.sci new file mode 100644 index 000000000..58e38dfef --- /dev/null +++ b/965/CH2/EX2.26/26.sci @@ -0,0 +1,22 @@ +clc;
+clear all;
+disp("Heat removal by refrigeration")
+La=0.22;//m thickness of brick wall
+Lb=0.09;//m thickness of plastic foam
+Lc=0.016;//m thickness of wood
+thf=25;// degree C temperature of hot fluid
+tcf=-3;// degree C temperature of cold fluid
+kA=0.99;//W/(m*C)
+kB=0.022;//W/(m*C)
+kC=0.17;//W/(m*C)
+A=85;//m^2
+hhf=11;//W/(m^2*C) hot fluid
+hcf=30;//W/(m^2*C) cold fluid
+U=1/(1/hhf+La/kA+Lb/kB+Lc/kC+1/hcf)
+Q= U*A*(thf-tcf);
+disp("W/m^2",Q,"rate of heat flow per m^2 = ")
+//Q=U*A*(thf-t2)
+U=1/(1/hhf+La/kA);
+t2=thf-Q/(U*A);
+disp ("degree C",t2,"temperature of inside surface of brick t2 = ")
+
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