diff options
| author | hardythe1 | 2015-04-07 15:58:05 +0530 |
|---|---|---|
| committer | hardythe1 | 2015-04-07 15:58:05 +0530 |
| commit | c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131 (patch) | |
| tree | 725a7d43dc1687edf95bc36d39bebc3000f1de8f /Fundamentals_Of_Thermodynamics/Chapter7_6.ipynb | |
| parent | 62aa228e2519ac7b7f1aef53001f2f2e988a6eb1 (diff) | |
| download | Python-Textbook-Companions-c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131.tar.gz Python-Textbook-Companions-c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131.tar.bz2 Python-Textbook-Companions-c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131.zip | |
added books
Diffstat (limited to 'Fundamentals_Of_Thermodynamics/Chapter7_6.ipynb')
| -rwxr-xr-x | Fundamentals_Of_Thermodynamics/Chapter7_6.ipynb | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/Fundamentals_Of_Thermodynamics/Chapter7_6.ipynb b/Fundamentals_Of_Thermodynamics/Chapter7_6.ipynb new file mode 100755 index 00000000..02425dea --- /dev/null +++ b/Fundamentals_Of_Thermodynamics/Chapter7_6.ipynb @@ -0,0 +1,217 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:a60a19bd48510a099eb4483e5176d858019753b734df1f9001e5af0e3bc7fc2e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter7:THE SECOND LAW OF THERMODYNAMICS"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex7.1:pg-241"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 1\n",
+ "#rate of fuel consumption\n",
+ "\n",
+ "W=136*0.7355 #output of automobile engine in kW\n",
+ "neng=0.3 #thermal efficiency of automobile engine\n",
+ "Qh=W/neng #energy output of fuel in kW\n",
+ "Q1=Qh-W #total rate of energy rejected to the ambient\n",
+ "qh=35000.0 #energy output of fuel in kJ/kg\n",
+ "m=Qh/qh #rate of fuel consumption in kg/s\n",
+ "print\"\\n hence,total rate of energy rejected is\",round(Q1),\"kW\" \n",
+ "print\"\\n and rate of fuel consumption is\",round(m,4),\"kg/s\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " hence,total rate of energy rejected is 233.0 kW\n",
+ "\n",
+ " and rate of fuel consumption is 0.0095 kg/s\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex7.2:pg-243"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 2\n",
+ "#coefficient of performance of refrigerator\n",
+ "\n",
+ "Qh=400 #heat rejected to kitchen air in W\n",
+ "W=150.0 #electrical input power in W\n",
+ "Q1=Qh-W #rate of energy taken out to cold space in W\n",
+ "B=Ql/W #coefficicent of performnace of refrigerator\n",
+ "print\"\\n hence,rate of energy taken out of the cold space is\",round(Q1),\"W\"\n",
+ "print\"\\n and coefficient of performance of the refrigerator is\",round(B,2),"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " hence,rate of energy taken out of the cold space is 250.0 W\n",
+ "\n",
+ " and coefficient of performance of the refrigerator is 1.67\n"
+ ]
+ }
+ ],
+ "prompt_number": 22
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex7.3:pg-256"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 3\n",
+ "# temperature at which the pressure go to zero\n",
+ "\n",
+ "P1=110.9#pressur at the ice point in kPa\n",
+ "P2=151.5#pressure at the steam point in kPa\n",
+ "T1=0#in C\n",
+ "T2=100#in C\n",
+ "S=(P2-P1)/(T2-T1)#slope in kPa/C\n",
+ "T=T1-(P1/S)# absolute ideal gas temperature in C\n",
+ "print\"\\n hence,the absolute ideal gas temperature is\",round(T,2),\"C\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " hence,the absolute ideal gas temperature is -273.15 C\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex7.4:pg-260"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 4\n",
+ "#comparison of ideal carnot heat engine with actual heat engine\n",
+ "\n",
+ "Qh=1000.0 #rate of heat transfer to heat engine in kW\n",
+ "W=450.0 #rate of production of work in kW\n",
+ "Ql=Qh-W #rate of heat rejected by heat engine in kW\n",
+ "nthermal=W/Qh #efficiency from the definition of efficiency\n",
+ "Tl=300 #temperature of surroundings in K\n",
+ "Th=550.0 #temperature of heat source in Celsius\n",
+ "ncarnot=1-Tl/(Th+273.15) #efficiency if heat engine is considered to be ideal carnot heat engine\n",
+ "W2=ncarnot*Qh #rate of work production if heat engine is assumed to be ideal carnot heat engine in kW\n",
+ "Q12=Qh-W2 #rate of heat rejected by heat engine in kW if heat engine is assumed to be ideal carnot heat engine\n",
+ "print\"\\n hence,energy discarded to the ambient surroundings iS\",round(Q12,4),\"kw\"\n",
+ "print\"\\n and the engine efficiency is\",round(ncarnot,4),"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " hence,energy discarded to the ambient surroundings iS 364.4536 kw\n",
+ "\n",
+ " and the engine efficiency is 0.6355\n"
+ ]
+ }
+ ],
+ "prompt_number": 53
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Ex7.5:pg-261"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#example 5\n",
+ "#calculating required work\n",
+ "\n",
+ "Tl=24+273.15 #room temperature in Kelvins\n",
+ "Th=35+273.15 #atmospheric temperature in Kelvins\n",
+ "Ql=4 #rate of heat rejection from room\n",
+ "B=Tl/(Th-Tl) #coefficient of performance of air conditioner\n",
+ "W=Ql/B #required work in kW\n",
+ "print\"\\n hence,the magnitude of reqiured work is\",round(W,2),\"kw\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ " hence,the magnitude of reqiured work is 0.15 kw\n"
+ ]
+ }
+ ],
+ "prompt_number": 40
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |