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"cells": [
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"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter2: Energy Conservation"
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{
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"level": 2,
"metadata": {},
"source": [
"Ex2.1:pg-56"
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"input": [
"# Given data:\n",
"Hcoal=20.0 # heating value of coal in MJ\n",
"W=200.0e3 # weight of coal in kg\n",
"E=1.2e6 # Electrical energy generated in MJ\n",
"delH=1.6e6 # Heat energy generated in MJ\n",
"ne=0.30 # electrical efficiency\n",
"nb=0.8 # thermal efficiency\n",
"\n",
"QA=Hcoal*W # total thermal energy input to plant in MJ\n",
"nco=(E+delH)/QA # efficiency of cogeneration plant\n",
"e=E/(E+delH) # electrical fraction\n",
"\n",
"nc=1/((e/ne)+(1-e)/nb) # overall efficiency\n",
"\n",
"print \"The overall efficiency is \",round(nc*100,2),\"%\"\n"
],
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"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The overall efficiency is 46.67 %\n"
]
}
],
"prompt_number": 3
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"metadata": {}
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