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+{

+ "metadata": {

+  "name": "",

+  "signature": "sha256:983f6479fd716219923fc039ee4060b375eda2b85fbdeb1a9e63c25f153f7ec9"

+ },

+ "nbformat": 3,

+ "nbformat_minor": 0,

+ "worksheets": [

+  {

+   "cells": [

+    {

+     "cell_type": "heading",

+     "level": 1,

+     "metadata": {},

+     "source": [

+      "CHAPTER 5: AIR COMPRESSORS AND MOTORS REFRIGERATIONS"

+     ]

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.1 Page 66"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "a=7.0#in\n",

+      "b=10.0#in\n",

+      "c=12.0#in\n",

+      "r=96.0#in\n",

+      "p1=15.0#lb/in^2\n",

+      "p2=100.0#lb/in^2\n",

+      "T=16.0#Degree C\n",

+      "gama=1.4#in\n",

+      "h=120.0#r.p.m\n",

+      "T1=T+273#C absolute\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "v1=(pi/4)*(a/c)**2*(b/c)#ft^3\n",

+      "w=(p1*144*v1)/(r*T1)#lb\n",

+      "w1=h*w#lb\n",

+      "W=1680*(1.72-1)#ft lb\n",

+      "I=144*p1*v1*log(p2/p1)#ft lb\n",

+      "E=I/W*100#percent\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The ideal efficiency is defined as the ratio of tthis work is\",round(E,4),\"%\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The ideal efficiency is defined as the ratio of tthis work is 75.4482 %\n"

+       ]

+      }

+     ],

+     "prompt_number": 2

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.2 Page 68"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "h1=16#i.h.p\n",

+      "p1=100#lb/in^2\n",

+      "p2=15#lb/in^2\n",

+      "R=275#R.p.m\n",

+      "h=550#ft/min\n",

+      "q=33000#in^2\n",

+      "v1=4.85#lb\n",

+      "B=8.53#in\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "M=(p1/v1)-p2+(p1/v1-p2)*1/0.2\n",

+      "S=h/(2*R)#ft\n",

+      "I=(q*h1)/(M*S*R)#in^2\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The effect of the clearance volume is\",round(I,3),\"in^2\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The effect of the clearance volume is 56.954 in^2\n"

+       ]

+      }

+     ],

+     "prompt_number": 3

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.3 Page 69"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "h=100#ft^3\n",

+      "t=15#degree C\n",

+      "p=120#lb/in^2\n",

+      "gama=1.3#in\n",

+      "t1=15#Degree C\n",

+      "M=((144*t*h*2.6)/(0.3)*(1.271-1))#ft lb\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "V=sqrt(p/t)#ft lb\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"Compare the values of the two cylinders is\",round(V,3),\"ft lb\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "Compare the values of the two cylinders is 2.828 ft lb\n"

+       ]

+      }

+     ],

+     "prompt_number": 6

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.5 Page 71"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "h=0.2#ft^3\n",

+      "v=10#percent\n",

+      "T=15#degree c\n",

+      "p=30#lb/in62\n",

+      "t1=15#Degree C\n",

+      "p1=60#lb/in^2\n",

+      "v1=2.2#ft^3\n",

+      "v3=0.328#ft^3\n",

+      "A=(v1-v3)#ft^3\n",

+      "v2=1.341#ft^3\n",

+      "V=v2-h#ft^\n",

+      "t2=288#Degree C\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "T2=(t2*p*v2)/(t1*v1)#Degree C absolute\n",

+      "v5=(t2/T2)*V#ft^3\n",

+      "v7=0.164#ft^3\n",

+      "v8=v5-(v7/11)*v5\n",

+      "v6=v8/(1-v7/11)#ft^3\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The required volume of the H.P cylinder including clearance is\",round(v6,3),\"ft^3\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The required volume of the H.P cylinder including clearance is 0.936 ft^3\n"

+       ]

+      }

+     ],

+     "prompt_number": 7

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.6 Page 73"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "p1=80#lb/in^2\n",

+      "p2=20#lb/in^2\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "P=sqrt(p1*p2)#lb/in62\n",

+      "V=P/p1#stroke\n",

+      "W=p2/P#stroke\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"the ratio of cut off to length of stroke is\",round(W,3),\"stroke\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "the ratio of cut off to length of stroke is 0.5 stroke\n"

+       ]

+      }

+     ],

+     "prompt_number": 8

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.9 Page 75"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "p1=25.0#lb/in^2\n",

+      "p2=50.0#lb/in^2\n",

+      "p3=75.0#lb/in^2\n",

+      "p4=100.0#lb/in^2\n",

+      "v1=29.2#ft^3\n",

+      "v2=28.8#ft^3\n",

+      "v3=28.1#ft^3\n",

+      "v4=27.2#ft^3\n",

+      "h=14.7#lb/in^2\n",

+      "v=3.0#percent\n",

+      "s=5.0#stroke\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "V=(pi*p1)/(4)*4#in^3\n",

+      "V1=v/p4*V#in^3\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The volume of efficiency of pressure is\",round(V1,3),\"in^3\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The volume of efficiency of pressure is 2.356 in^3\n"

+       ]

+      }

+     ],

+     "prompt_number": 10

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.12 Page 78"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "p1=15.0#lb/in^2\n",

+      "p2=60.0#lb/in^2\n",

+      "t=16.0#Degree C\n",

+      "Ta=273.0+t#Degree C absolute\n",

+      "T=1.486#lb/in^2\n",

+      "Td=Ta/T#Degree C absolute\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "P=Td/(Ta-Td)#Degree C absolute\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The lowest temperature and coefficient of per formance is\",round(P,3),\"Degree C absolute\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The lowest temperature and coefficient of per formance is 2.058 Degree C absolute\n"

+       ]

+      }

+     ],

+     "prompt_number": 14

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.14 Page 79"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "T1=30#Degree c\n",

+      "T2=-10#degree C\n",

+      "t1=263#F\n",

+      "t2=303#F\n",

+      "h1=20#Units\n",

+      "h2=79#C.H.U/lb\n",

+      "h=24#hours\n",

+      "T3=1#Degree C\n",

+      "p=2.2046#C.H.U/sec\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "P=h1*p#C.H.U/sec\n",

+      "T=t1/(t2-t1)#F\n",

+      "H=P*60#C.H.U\n",

+      "W=(H*1400)/T#ft/lb\n",

+      "hp=W/33000#h.p\n",

+      "W1=(H*60*h)/(80*2240)#tons\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"the cycle is a perfect one\",round(W1,3),\"tons\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "the cycle is a perfect one 21.259 tons\n"

+       ]

+      }

+     ],

+     "prompt_number": 15

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.15 Page 80"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "p1=930#lb/in^2\n",

+      "p2=440#lb/in^2\n",

+      "T=268#F\n",

+      "t1=25#F\n",

+      "t2=5#F\n",

+      "h1=19.4#C.H.U\n",

+      "h2=-1.8#C.H.U\n",

+      "h3=29#C.H.U\n",

+      "h4=58.6#C.H.U\n",

+      "d=0.6#C.H.U\n",

+      "d1=0.06#lb\n",

+      "d2=-0.01#lb\n",

+      "c=40#percent\n",

+      "h=24#hour\n",

+      "t3=10#C\n",

+      "d3=15#lb\n",

+      "h5=80#C.H.U\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "A=(h1-(h2))-(d1-(d2))*T#C.H.U\n",

+      "FD=A/T#units of entropy\n",

+      "AD=(d*h4/T-0.07-A/T)*T#C.H.U\n",

+      "W=4.28#C.H.U\n",

+      "T=AD/W#C.H.U\n",

+      "P=0.4*T#C.H.U\n",

+      "H=P*W*d3#C.H.U\n",

+      "H1=P*W*d3*60*h#C.H.U\n",

+      "H2=t3+h5#C.H.U\n",

+      "W1=H1/(H2*2240)#tond\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The many tons of ice would a machine working between the same limit and having a relative coefficient is\",round(W1,3),\"tons\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The many tons of ice would a machine working between the same limit and having a relative coefficient is 0.598 tons\n"

+       ]

+      }

+     ],

+     "prompt_number": 16

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.16 Page 82"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "t1=20.0#Degeree C\n",

+      "t2=-10.0#degree C\n",

+      "h=0.95#dry\n",

+      "t3=35.0#Degree C\n",

+      "h1=0.066#lb\n",

+      "h2=1.089#lb\n",

+      "v1=-0.033#lb\n",

+      "v2=1.193#lb\n",

+      "v3=0.508#lb\n",

+      "T1=263.0#F\n",

+      "T2=293.0#F\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "T=T1/(T2-T1)#F\n",

+      "E=h1-(v1)#lb\n",

+      "C=0.1079#lb\n",

+      "CP=E/C#lb\n",

+      "A=CP*(T2-T1)-E*T1#C.H.U\n",

+      "F=A/T1#units of entropy\n",

+      "H=254.212#C.H.U\n",

+      "H2=274.447#C.H.U\n",

+      "W=(CP*(T2-T1)+h*1.023*(T2-T1)-E*T1)#C.H.U\n",

+      "P=H/W#C.H.U\n",

+      "V=A+v3*15-T1*v3*0.0507#C.H.U\n",

+      "H1=T1*(v3*0.0507+0.05*1.023)#C.H.U\n",

+      "N=H2/(W+V)#C.H.U\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"The upper and lower temperature limits respectively are\",round(T,4),\"F\"\n",

+      "print\"The vapour compression cycle work done is\",round(H,3),\"C.H.U\"\n",

+      "print\"The vapour is now additional work done is\",round(N,3),\"C.H.U\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "The upper and lower temperature limits respectively are 8.7667 F\n",

+        "The vapour compression cycle work done is 254.212 C.H.U\n",

+        "The vapour is now additional work done is 8.322 C.H.U\n"

+       ]

+      }

+     ],

+     "prompt_number": 20

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Example 5.18 Page 85"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#initialisation of variable\n",

+      "from math import pi,sqrt,acos,asin,atan,cos,sin,tan,log\n",

+      "h=0.8#dry\n",

+      "p=120#lb/in^2\n",

+      "p1=1#lb/in^2\n",

+      "t=100#Degree C\n",

+      "A=99.6-38.6-0.178*311.8#C.H.U\n",

+      "G=311.8#units of entropy\n",

+      "AF=440.52#C.H.U\n",

+      "H=399.82#lb/in^2\n",

+      "p=307#lb\n",

+      "\n",

+      "#CALCULATIONS\n",

+      "T=H/p#C.H.U\n",

+      "\n",

+      "#RESULTS\n",

+      "print\"theoretical coefficient pf performance as a refrigeratior is\",round(T,3),\"C.H.U\""

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "theoretical coefficient pf performance as a refrigeratior is 1.302 C.H.U\n"

+       ]

+      }

+     ],

+     "prompt_number": 21

+    }

+   ],

+   "metadata": {}

+  }

+ ]

+}
\ No newline at end of file