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Diffstat (limited to '3685/CH18/EX18.2/Ex18_2.sce')
| -rw-r--r-- | 3685/CH18/EX18.2/Ex18_2.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/3685/CH18/EX18.2/Ex18_2.sce b/3685/CH18/EX18.2/Ex18_2.sce new file mode 100644 index 000000000..0a0ed6e49 --- /dev/null +++ b/3685/CH18/EX18.2/Ex18_2.sce @@ -0,0 +1,18 @@ +clc
+r1 = 5 // Inner radius of steel pipe in cm
+r2 = 10 // Extreme radius of inner insulation in cm
+r3 = 13// Extreme radius of outer insulation in cm
+K1 = 0.23 // Thermal conductivity of inner insulation in W/mK
+K2 = 0.37 // Thermal conductivity of outer insulation in W/mK
+hi = 58 // Inner heat transfer coefficient in W/m^2K
+h0 = 12 // Inner heat transfer coefficient in W/m^2K
+ti = 60 // Inner temperature in degree Celsius
+to = 25 // Outer temperature in degree Celsius
+L = 50 // Length of pipe in m
+
+printf("\n Example 18.2\n")
+Q =((2*%pi*L*(ti-to))/((1/(hi*r1*1e-2))+(log(r2/r1)/(K1))+(log(r3/r2)/(K2))+(1/(h0*r3*1e-2))))
+// Rate of heat transfer
+printf("\n Heat transfer rate is %f kW",Q/1e3)
+//The answers vary due to round off error
+
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