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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3472/CH40/EX40.1/Example40_1.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3472/CH40/EX40.1/Example40_1.sce')
| -rw-r--r-- | 3472/CH40/EX40.1/Example40_1.sce | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/3472/CH40/EX40.1/Example40_1.sce b/3472/CH40/EX40.1/Example40_1.sce new file mode 100644 index 000000000..38b4614c8 --- /dev/null +++ b/3472/CH40/EX40.1/Example40_1.sce @@ -0,0 +1,39 @@ +// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION
+
+// PART IV : UTILIZATION AND TRACTION
+// CHAPTER 2: HEATING AND WELDING
+
+// EXAMPLE : 2.1 :
+// Page number 724-725
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+P = 15.0*10**3 // Power supplied(W)
+V = 220.0 // Voltage(V)
+T_w = 1000.0 // Temperature of wire(°C)
+T_c = 600.0 // Temperature of charges(°C)
+k = 0.6 // Radiatting efficiency
+e = 0.9 // Emissivity
+
+// Calculations
+rho = 1.016/10**6 // Specific resistance(ohm-m)
+d_square = 4*rho*P/(%pi*V**2) // d^2 in terms of l
+T_1 = T_w+273 // Absolute temperature(°C)
+T_2 = T_c+273 // Absolute temperature(°C)
+H = 5.72*10**4*k*e*((T_1/1000)**4-(T_2/1000)**4) // Heat produced(watts/sq.m)
+dl = P/(%pi*H)
+l = (dl**2/d_square)**(1.0/3) // Length of wire(m)
+d = dl/l // Diameter of wire(m)
+T_2_cold = 20.0+273 // Absolute temperature at the 20°C normal temperature(°C)
+T_1_cold = (H/(5.72*10**4*k*e)+(T_2_cold/1000)**4)**(1.0/4)*1000 // Absolute temperature when charge is cold(°C)
+T_1_c = T_1_cold-273 // Temperature when charge is cold(°C)
+
+// Results
+disp("PART IV - EXAMPLE : 2.1 : SOLUTION :-")
+printf("\nDiameter of the wire, d = %.3f cm", d*100)
+printf("\nLength of the wire, l = %.2f m", l)
+printf("\nTemperature of the wire when charge is cold, T_1 = %.f°C absolute = %.f°C \n", T_1_cold,T_1_c)
+printf("\nNOTE: Slight changes in the obtained answer from that of textbook is due to more precision here")
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