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"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter7-Energy from Biomass"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 7.15.1-pg370"
]
},
{
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"collapsed": false,
"input": [
"##Ex7.15.1; calculate volume of biogas digester and power available from the digester\n",
"##Mass of the dry input\n",
"M0=2*5;##M0=2.5 kg/day * 5\n",
"pm=50.;##unit=kg/m^3\n",
"tr=20.;##retention time in days\n",
"C=0.24;##unit=m^3 per kg;Biogas yeild.\n",
"n=0.6;##efficiency of burner\n",
"Hm=28.;##unit=MJ/m^3##combustion of methane\n",
"Fm=0.8;##methane proportional\n",
"##Fluid volume Vf is =M0/pm\n",
"Vf=M0/pm;\n",
"print'%s %.2f %s %.2f %s '%(\" Mass of the dry input M0=\",M0,\" kg/day\"and \" \\n Fluid volume Vf=\",Vf,\" m^3 /day\");\n",
"##for expression Vd=Vftr,the digester volume is\n",
"Vd=Vf*tr;\n",
"print'%s %.2f %s'%(\"\\n Vd=\",Vd,\" m^3\");\n",
"##volume of biogas is Vb=C*M0= biogas yield input * mass of dry input\n",
"Vb=C*M0;\n",
"print'%s %.2f %s'%(\"\\n volume of biogas is Vb=\",Vb,\" m^3 /day\");\n",
"##The Power available from the digester is\n",
"E=n*Hm*Fm*Vb;\n",
"print'%s %.2f %s'%(\"\\n The Power available from the digester=\",E,\" Mj/day\");\n",
"E=E*0.2728;##unit=kWh/day\n",
"print'%s %.2f %s'%(\"=\",E,\" kWh/day\");\n",
"E=E*41.8##unit=W(continuous thermal)\n",
"print'%s %.2f %s'%(\"=\",E,\" W(continuous thermal)\");\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Mass of the dry input M0= 10.00 \n",
" Fluid volume Vf= 0.20 m^3 /day \n",
"\n",
" Vd= 4.00 m^3\n",
"\n",
" volume of biogas is Vb= 2.40 m^3 /day\n",
"\n",
" The Power available from the digester= 32.26 Mj/day\n",
"= 8.80 kWh/day\n",
"= 367.82 W(continuous thermal)\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
