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diff --git a/Non-conventional_Energy_Sources_by_G._D._Rai/Chapter8_1.ipynb b/Non-conventional_Energy_Sources_by_G._D._Rai/Chapter8_1.ipynb new file mode 100755 index 00000000..6e5345c6 --- /dev/null +++ b/Non-conventional_Energy_Sources_by_G._D._Rai/Chapter8_1.ipynb @@ -0,0 +1,206 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:f4925d0b2e463188ddde753ce40d3c66c53a733743431193f8411c4532c3afc1"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter8-Geothermal Energy"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 8.5.1-pg 450"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "##Ex8.5.1.;calculate: steam flow rate,cooling water flow,plant efficiency,Heat rate\n",
+ "\n",
+ "##Enthalpy at point 1 at (31 kg/cm^2)=669.6 kcal/kg\n",
+ "##H1=H2=H3,enthalpy remain constant during throttling\n",
+ "H1=669.7;##unit= kcal/kg\n",
+ "H2=669.7;##unit= kcal/kg\n",
+ "H3=669.7;##unit= kcal/kg\n",
+ "##At point 3,\n",
+ "P3=9.55;##unit= kg/cm^2\n",
+ "##specific volume\n",
+ "vs3=0.22;##unit=m^3/kg\n",
+ "##Entropy\n",
+ "S3=1.580\n",
+ "T3=190.;##unit=degree C,(degree of superheat=13 degree C)\n",
+ "##S4_s at 0.34 kg/cm^2=S3\n",
+ "##x4_s=0.838\n",
+ "##and H4_s=hs+xL\n",
+ "H4_s=72.+(0.838*556)\n",
+ "print'%s %.2f %s'%(\" H4_s=\",H4_s,\" kcal/kg\")\n",
+ "##Isentropic turbine work=H3-H4_s\n",
+ "ITW=H3-H4_s;\n",
+ "print'%s %.2f %s'%(\"\\n Isentropic turbine work=\",ITW,\" kcal/kg\");\n",
+ "##Actual turbine work\n",
+ "ATW=0.80*ITW;\n",
+ "print'%s %.2f %s'%(\"\\n Actual turbine work=\",ATW,\" kcal/kg\");\n",
+ "H4=669.7-ATW;\n",
+ "print'%s %.2f %s'%(\"\\n H4=\",H4,\" kcal/kg\")\n",
+ "h5_6=72;##unit= kcal/kg; (Ignoring pump work)\n",
+ "##sensible heat h7=h5=25 kcal/kg\n",
+ "h5=25;##unit=kcal/kg\n",
+ "h7=25;##unit=kcal/kg\n",
+ "##Turbine steam flow\n",
+ "TSF=(250*0.860*10**6)/(ATW*0.9);\n",
+ "print'%s %.2f %s'%(\"\\n Turbine steam flow=\",TSF,\" kg/hr\");\n",
+ "##let\n",
+ "m4=TSF;\n",
+ "##Turbine volume flow\n",
+ "TVF=(TSF/60)*vs3;\n",
+ "print'%s %.2f %s'%(\"\\n Turbine volume flow=\",TVF,\" m^3/min\");\n",
+ "##cooling water flow m7:m7(h5_6-h7)=m4(H4-h5_6)\n",
+ "m7=((H4-h5_6)/(h5_6-h7))*m4;\n",
+ "print'%s %.2f %s'%(\"\\n cooling water flow m7=\",m7,\" kg/hr\");\n",
+ "Heat_added=H1-h5_6;\n",
+ "print'%s %.2f %s'%(\"\\n Heat_added=\",Heat_added,\" kcal/kg\");\n",
+ "##plant efficiency=(Actual Turbine work*nmg)/Heat added\n",
+ "##nmg=combined mechanical and electrical efficiency of turbine-generator\n",
+ "nmg=0.90;\n",
+ "Plant_efficiency=(ATW*nmg)/Heat_added;\n",
+ "plant_efficiency=Plant_efficiency*100.;\n",
+ "print'%s %.2f %s'%(\"\\n Plant Efficiency nplant=\",plant_efficiency,\" persent\");\n",
+ "##Plant heat rate=(860*Heat_added)/net_work\n",
+ "##net_work=105.36*0.90\n",
+ "Plant_heat_rate=(860./Plant_efficiency);\n",
+ "print'%s %.2f %s'%(\"\\n Plant heat rate=\",Plant_heat_rate,\" kcal/kWH\");\n",
+ "\n",
+ "\n",
+ "##The value of \"turbine steam flow\" is wrong due to calculating mistak in textbook,due to which the further value related with it is given wrong\n",
+ "##The values are corrected in this program\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " H4_s= 537.93 kcal/kg\n",
+ "\n",
+ " Isentropic turbine work= 131.77 kcal/kg\n",
+ "\n",
+ " Actual turbine work= 105.42 kcal/kg\n",
+ "\n",
+ " H4= 564.28 kcal/kg\n",
+ "\n",
+ " Turbine steam flow= 2266119.59 kg/hr\n",
+ "\n",
+ " Turbine volume flow= 8309.11 m^3/min\n",
+ "\n",
+ " cooling water flow m7= 23735548.77 kg/hr\n",
+ "\n",
+ " Heat_added= 597.70 kcal/kg\n",
+ "\n",
+ " Plant Efficiency nplant= 15.87 persent\n",
+ "\n",
+ " Plant heat rate= 5417.84 kcal/kWH\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 8.5.2-pg460"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "##Ex8.5.2.;calculate: hot water flow,condenser cooling water flow,cycle efficiency,plant heat rate.\n",
+ "import math\n",
+ "H1=669.6;##unit=kcal/kg\n",
+ "H2=669.6;##unit=kcal/kg\n",
+ "##pressure at point 2,is 10.5 kg/cm^2;thus,\n",
+ "T2=195.;##unit=degree celcius; (14 degree celcius of superheat)\n",
+ "s2=1.567;\n",
+ "vsup=0.27;\n",
+ "x3s=0.832;\n",
+ "H3s=535.;##unit=kcal/kg\n",
+ "##Isentropic turbine work\n",
+ "ITW=H2-H3s;\n",
+ "print'%s %.2f %s'%(\" Isentropic turbine work=\",ITW,\" kcal/kg\");\n",
+ "##Actual turbine work\n",
+ "ATW=0.65*ITW;\n",
+ "print'%s %.2f %s'%(\"\\n Actual turbine work=\",ATW,\" kcal/kg\");\n",
+ "H3=669.6-ATW;\n",
+ "print'%s %.2f %s'%(\"\\n H3=\",H3,\" kcal/kg\")\n",
+ "##h_4-5(ignore bpump work)\n",
+ "h4=72.4;##unit=kcal/kg\n",
+ "##h6 at 27 degree c\n",
+ "h6=27;##unit=kcal/kg\n",
+ "##Turbine steam flow or hot water flow=power output/actual turbine work\n",
+ "TSF=(10*10**6*0.86)/ATW;\n",
+ "print'%s %.2f %s'%(\"\\n Turbine steam flow or hot water flow=\",TSF,\" kg/hr\");\n",
+ "##consider cooling water flow m4:m3*(H3-h4)=m4(h4-h6)\n",
+ "##or\n",
+ "m4=((582.11-72.4)*0.983*10**5)/(72.4-27);\n",
+ "print'%s %.2f %s'%(\"\\n cooling water flow=\",m4,\" kg/hr\");\n",
+ "Heat_added=H1-h4\n",
+ "print'%s %.2f %s'%(\"\\n Heat_added=\",Heat_added,\" kcal/kg\");\n",
+ "##plant efficiency=Turbine work/Heat added\n",
+ "Plant_efficiency=(ATW/Heat_added);\n",
+ "plant_efficiency=Plant_efficiency*100;\n",
+ "print'%s %.2f %s'%(\"\\n Plant Efficiency=\",plant_efficiency,\" persent\");\n",
+ "##Plant heat rate=860/Plant Efficiency\n",
+ "Plant_heat_rate=860./Plant_efficiency;\n",
+ "print'%s %.2f %s'%(\"\\n Plant heat rate=\",Plant_heat_rate,\" kcal/kWh\");\n",
+ "\n",
+ "\n",
+ "##The value of m3=14.03*10^5 is given wrong in the text book;the actual value is m3=11.03*10^5\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Isentropic turbine work= 134.60 kcal/kg\n",
+ "\n",
+ " Actual turbine work= 87.49 kcal/kg\n",
+ "\n",
+ " H3= 582.11 kcal/kg\n",
+ "\n",
+ " Turbine steam flow or hot water flow= 98296.95 kg/hr\n",
+ "\n",
+ " cooling water flow= 1103623.19 kg/hr\n",
+ "\n",
+ " Heat_added= 597.20 kcal/kg\n",
+ "\n",
+ " Plant Efficiency= 14.65 persent\n",
+ "\n",
+ " Plant heat rate= 5870.29 kcal/kWh\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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