From 92cca121f959c6616e3da431c1e2d23c4fa5e886 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Tue, 7 Apr 2015 15:58:05 +0530 Subject: added books --- Fundamentals_Of_Thermodynamics/Chapter13.ipynb | 262 +++++++++++++++++++++++++ 1 file changed, 262 insertions(+) create mode 100755 Fundamentals_Of_Thermodynamics/Chapter13.ipynb (limited to 'Fundamentals_Of_Thermodynamics/Chapter13.ipynb') diff --git a/Fundamentals_Of_Thermodynamics/Chapter13.ipynb b/Fundamentals_Of_Thermodynamics/Chapter13.ipynb new file mode 100755 index 00000000..95893bd9 --- /dev/null +++ b/Fundamentals_Of_Thermodynamics/Chapter13.ipynb @@ -0,0 +1,262 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:6cc89f09586fc1fc226ee69c300e69ecaeae3fbafe1ae419c1c6cbc4ae7dcf83" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "CHAPTER13:Gas Mixtures" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex13.3:Pg-533" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#ques3\n", + "#calculating humidity ratio, dew point,mass of air, mass of vapor\n", + "\n", + "r=0.70;#relative humidity\n", + "Pg=5.628;#saturation pressure in kPa\n", + "Pv=r*Pg;#vapour pressure in kPa\n", + "P=100;#net pressure kPa \n", + "Pa=P-Pv;#Partial pressure of air\n", + "w=0.622*Pv/Pa;#humidity ratio formula\n", + "V=100;#volume in m^3\n", + "Ra=0.287;#gas constant for water vapour\n", + "T=308.2;#Temperature in K\n", + "ma=Pa*V/(Ra*T);#mass in kg\n", + "mv=w*ma;#mass of vapour\n", + "print\" Mass of vapour is\",round(mv,3),\"Kg \"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Mass of vapour is 2.77 Kg \n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex13.4:Pg-534" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#ques4 \n", + "#calculating amount of water vapour condensed on cooling\n", + "\n", + "#from example 3\n", + "w1=0.0255;#w1=w, humidity ratio at initial temperature\n", + "ma=108.6;#mass of air in kg\n", + "P=100;#kPa net pressure\n", + "#at 5 C mixture is saturated so Pv2=Pg2\n", + "Pg2=0.8721;\n", + "Pv2=Pg2;\n", + "w2=0.622*Pv2/(P-Pg2);\n", + "mc=ma*(w1-w2);\n", + "print\"Mass of vapour condense is \",round(mc,3),\"kg \"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Mass of vapour condense is 2.175 kg \n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex13.5:Pg-536" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#ques5\n", + "#calculating heat transfer per kilogram of dry air\n", + "\n", + "#1-inlet state\n", + "#2-Exit state\n", + "r1=0.80;#realtive humidity at state 1\n", + "Pg1=4.246;#saturation pressure of vapour in kPa\n", + "P1=105.0;#net pressure at state 1 in kPa\n", + "P2=100.0;#net pressure at state 2 in kPa\n", + "Pv1=r1*Pg1;#partial pressure of vapour in kPa\n", + "w1=0.622*Pv1/(P1-Pv1);#humidity ratio at state 1\n", + "r2=0.95;#relative humidity at state 2\n", + "Pg2=1.7051;#saturation pressure of vapour in kPa\n", + "Pv2=r2*Pg2;#partial pressure of vapour in kPa\n", + "w2=0.622*Pv2/(P2-Pv2);#humidity ratio at state 2\n", + "T1=30.0;#C\n", + "T2=15.0;#C\n", + "Cp=1.004;#specific heat of water vapour in kJ/kg\n", + "hv2=2528.9;#enthalpy of vapourisation of vapour in kJ/kg\n", + "hv1=2556.3;#enthalpy of vapourisation of vapour in kJ/kg\n", + "hl2=62.99;#enthalpy of \n", + "q=Cp*(T2-T1)+w2*hv2-w1*hv1+hl2*(w1-w2);#kJ/kg\n", + "print\" Heat transferred per unit mass =\",round(q,1),\"kJ/kg of dry air\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Heat transferred per unit mass = -41.7 kJ/kg of dry air\n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex13.6:Pg-537" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#ques6\n", + "#calculating heat transferred in gas vapour mixture\n", + "\n", + "#n-Nitrogen\n", + "#v-water vapour\n", + "Pn2=1995;#Pressure of nitrogen in kPa\n", + "V=0.5;#Volume in m^3\n", + "Rn2=0.2968;#Gas constant for nitrogen in kJ/kg.K\n", + "Rv=0.4615;#gas constant for vapour\n", + "T1=323.2;#Temperature in K\n", + "T2=283.2;#Temperature in K\n", + "Pv1=5;#Pressure of water vapour in kPa at state 1\n", + "Pv2=1.2276;#Pressure of water vapour in kPa at state 2\n", + "mn2=Pn2*V/(Rn2*T1);#mass of nitrogen\n", + "mv1=Pv1*V/(Rv*T1);#mass of vapour in kg\n", + "mv2=Pv2*V/(Rv*T2);#mass of vapour in kg\n", + "ml2=mv1-mv2;#mass of liquid condensed n kg\n", + "uv1=2443.1;#specific internal energy of vapour in kJ/kg at state 1\n", + "uv2=2389.2;#specific internal energy of vapour in kJ/kg at state 2\n", + "ul2=42.0;#specific internal energy of liquid water in kJ/kg\n", + "Cv=0.745;#specific heat at constant volume in kJ/kg.K\n", + "Q=mn2*Cv*(T2-T1)+mv2*uv2+ml2*ul2-mv1*uv1;\n", + "print\"Heat transferred =\",round(Q,2),\"kJ \"\n", + "\n", + "#the answer is different in book due to intermediate approximization " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Heat transferred = -339.1 kJ \n" + ] + } + ], + "prompt_number": 13 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex13.7:Pg-539" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#ques7\n", + "#calculating humidity ratio and relative humidity \n", + "\n", + "#1-Inlet state\n", + "#2-Exit state\n", + "P=100;#net pressure n kPa \n", + "#it is steady state adiabatic process\n", + "#water vapour leaving is saturated so Pv2=Pg2\n", + "Pg2=2.339;#saturation pressure of vapour in kPa\n", + "Pv2=Pg2;#partial pressure of vapour\n", + "w2=0.622*Pv2/(P-Pg2);\n", + "Cpa=1.004;#specific heat n kJ/kg/K\n", + "T2=20;# final temp in C\n", + "T1=30;# initial temp in C\n", + "Hfg2=2454.1;#specific heat difference at state 2 in kJ/kg\n", + "hv1=2556.3;#enthalpy of water vapour at state 1 in kJ/kg\n", + "hl2=83.96;#enthalpy of liquid water in kJ/kg\n", + "w1=(Cpa*(T2-T1)+w2*Hfg2)/(hv1-hl2);\n", + "print \" Relative humidity =\",round(w1,4)\n", + "#also w1=0.622*Pv1/(100-Pv2)\n", + "Pv1=100*w1/(0.622+w1);\n", + "Pg1=4.246;#saturation pressure at state 1 in kPa\n", + "r=Pv1/Pg1;#humidity ratio\n", + "print\" Humidity ratio =\",round(r,4)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Relative humidity = 0.0107\n", + " Humidity ratio = 0.3993\n" + ] + } + ], + "prompt_number": 16 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [], + "language": "python", + "metadata": {}, + "outputs": [] + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit