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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/CH7/EX7.20/Example7_20.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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diff --git a/3472/CH7/EX7.20/Example7_20.sce b/3472/CH7/EX7.20/Example7_20.sce new file mode 100644 index 000000000..517fa00dc --- /dev/null +++ b/3472/CH7/EX7.20/Example7_20.sce @@ -0,0 +1,38 @@ +// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION
+
+// PART I : GENERATION
+// CHAPTER 7: TARIFFS AND ECONOMIC ASPECTS IN POWER GENERATION
+
+// EXAMPLE : 7.20 :
+// Page number 81
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+h = 30.0 // Mean head(m)
+area_catch = 250.0 // Catchment area(Square km)
+average_rain = 1.25 // Average rainfall per annum(m)
+utilized_rain = 0.7 // Rainfall utilized
+LF = 0.8 // Expected load factor
+n_turbine = 0.9 // Mechanical efficiency of turbine
+n_gen = 0.95 // Efficiency of generator
+
+// Calculations
+water_avail = utilized_rain*area_catch*10**6*average_rain // Water available(m^3)
+sec_year = 365.0*24*60*60 // Total seconds in a year
+Q = water_avail/sec_year // Quantity available per second(m^3) i.e Discharge(m^3/sec)
+w = 1000.0 // Density of water(kg/m^3)
+n = n_turbine*n_gen // Overall efficiency
+P = 0.736/75*Q*w*h*n // Average output of generator units(kW)
+rating_gen = P/LF // Rating of generator(kW)
+rating_gen_each = rating_gen/2.0 // Rating of each generator(kW)
+rating_turbine = rating_gen/2*(1/(0.736*n_gen)) // Rating of each turbine(metric hp)
+
+// Results
+disp("PART I - EXAMPLE : 7.20 : SOLUTION :-")
+printf("\nChoice of units are:")
+printf("\n 2 generators each having maximum rating of %.f kW ", rating_gen_each)
+printf("\n 2 propeller turbines each having maximum rating of %.f metric hp \n", rating_turbine)
+printf("\nNOTE: Changes in obtained answer from that of textbook answer is due to more precision here')
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