diff options
Diffstat (limited to '965/CH2/EX2.33/33.sci')
-rw-r--r-- | 965/CH2/EX2.33/33.sci | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/965/CH2/EX2.33/33.sci b/965/CH2/EX2.33/33.sci new file mode 100644 index 000000000..8dfc0162f --- /dev/null +++ b/965/CH2/EX2.33/33.sci @@ -0,0 +1,37 @@ +clc;
+clear all;
+disp("temperature profile in furnace")
+thf=810;// degree C
+t1=808;// degree C
+t2=777;// degree C
+t3=78.5;// degree C
+t4=78.4;// degree C
+tcf=26;// degree C
+La=6.5/100;//m
+Lb=12/100;//m
+Lc=0.65/100;//m
+kA=1.13;// W/(m*C)
+efb=0.82;
+sigma=5.67*10^(-8);// W/(m^2*K^4)
+disp("i)rate of heat transfer per unit area of furnace wall")
+//q=qhf=qA=qB=qC=qcf
+q=(t1-t2)/(La/kA);// W/(m^2)
+disp("W/m^2",q,"rate of heat transfer per unit area of furnace wall, q = ")
+qA=q;// W/(m^2)
+
+disp("ii)Thermal conductivities of block insulation kB and kC")
+kB=q*Lb/(t2-t3);// W/(m*C)
+disp("W/(m*C)",kB,"Thermal conductivity of block insulation, kB =")
+
+kC=q*Lc/(t3-t4);// W/(m*C)
+disp("W/(m*C)",kC,"Thermal conductivity of block insulation, kC =")
+
+ho=q/(t4-tcf);
+disp("W/(m^2*C)",ho,"Combined convective and radiative heat transfer coefficient on the outside surface =")
+qrad=efb*sigma*((thf+273)^4-(t1+273)^4);
+disp("W/m^2",qrad,"Heat exchange by radiation = ")
+//q=qrad+qconv
+qconv=q-qrad
+disp("W/(m^2*C)")
+hi=qconv/(thf-t1);
+disp("W/(m^2*C)",hi,"convectiv heat transfer coefficient for the inside surface of furnace wall hconv =")
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