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diff --git a/Thermal_Engineering_by_A_V_Arasu/7-Air_Conditioning.ipynb b/Thermal_Engineering_by_A_V_Arasu/7-Air_Conditioning.ipynb new file mode 100644 index 0000000..3f26f0b --- /dev/null +++ b/Thermal_Engineering_by_A_V_Arasu/7-Air_Conditioning.ipynb @@ -0,0 +1,187 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 7: Air Conditioning" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.1: Heating_capacity_of_coil_and_Surface_temperature_and_Capacity.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Chapter-7, Illustration 1, Page 345\n", +"//Title: Air Conditioning\n", +"//=============================================================================\n", +"clc\n", +"clear\n", +"\n", +"//INPUT DATA\n", +"DBTo=10;//Out door Dry bulb temperature in oC\n", +"WBTo=8;//Out door Wet bulb temperature in oC\n", +"DBTi=20;//In door Dry bulb temperature in oC\n", +"RH=0.6;//Re-Heat factor\n", +"a=0.3;//amount of air circulated in (m^3)/min/person\n", +"S=50;//Seating capacity of office\n", +"BPF=0.32;//ByPass factor\n", +"ha=25;//Enthalpy at point a from Psychrometric chart shown in Page 346 in kJ/kg\n", +"hb=42.5;//Enthalpy at point b from Psychrometric chart shown in Page 346 in kJ/kg\n", +"hc=42.5;//Enthalpy at point c from Psychrometric chart shown in Page 346 in kJ/kg\n", +"Wa=0.006;//Specific humidity at point a from Psychrometric chart shown in Page 346 in kg/kg dry air\n", +"Wc=0.009;//Specific humidity at point c from Psychrometric chart shown in Page 346 in kg/kg dry air\n", +"Tb=27;//Temperature at point b in oC\n", +"na=0.81;//Specific Volume from Psychrometric chart shown in page 346 in (m^3)/kg\n", +"\n", +"//CALCULATIONS\n", +"ma=(a*S)/(na*60);//mass of air circulated per second in kg/s\n", +"Hc=ma*(hb-ha);//Heating capacity of coil in kW\n", +"Ts=(Tb-(BPF*DBTo))/(1-BPF);//Heating coil surface temperature in oC\n", +"C=(ma*3600)*(Wc-Wa);//Capacity of humidifier in kg/hr\n", +"\n", +"//OUTPUT\n", +"mprintf('Heating capacity of coil is %3.2f kW \n Surface temperature of coil is %3.0f oC \n Capacity of humidifier is %3.2f kg/hr',Hc,Ts,C)" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.2: Capacity_of_coils_and_Amount_of_water_vapour_removed_and_by_pass_factor.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Chapter-7, Illustration 2, Page 346\n", +"//Title: Air Conditioning\n", +"//=============================================================================\n", +"clc\n", +"clear\n", +"\n", +"//INPUT DATA\n", +"S=60;//No. of staff\n", +"DBTo=30;//Out door Dry bulb temperature in oC\n", +"RHo=0.7;//Re-Heat factor at out-door\n", +"a=0.4;//amount of air circulated in (m^3)/min/person\n", +"DBTi=20;//In door Dry bulb temperature in oC\n", +"RHi=0.6;//Re-Heat factor at indoor\n", +"Td=25;//Heating coil surface temperature in oC\n", +"ha=82.5;//Enthalpy at point a from Psychrometric chart shown in Page 347 in kJ/kg\n", +"hb=34.5;//Enthalpy at point b from Psychrometric chart shown in Page 347 in kJ/kg\n", +"hc=42.5;//Enthalpy at point c from Psychrometric chart shown in Page 347 in kJ/kg\n", +"Wa=0.020;//Specific humidity at point a from Psychrometric chart shown in Page 347 in kg/kg dry air\n", +"Wb=0.009;//Specific humidity at point b from Psychrometric chart shown in Page 347 in kg/kg dry air\n", +"Tb=12;//Temperature at point b in oC\n", +"na=0.89;//Specific Volume from Psychrometric chart shown in page 346 in (m^3)/kg\n", +"\n", +"//CALCULATIONS\n", +"ma=(a*S)/(na*60);//mass of air circulated per second in kg/s\n", +"Hc=(ma*(ha-hb))/3.5;//Heating capacity of cooling coil in tonnes\n", +"Hh=ma*(hc-hb);//Heating capacity of heating coil in kW\n", +"W=(ma*3600)*(Wa-Wb);//Amount of water vapour removed per hour in kg/hr\n", +"BPF=(Td-DBTi)/(Td-Tb);//By-Pass factor\n", +"\n", +"//OUTPUT\n", +"mprintf('Capacity of cooling coil is %3.2f tonnes \n Capacity of heating coil is %3.1f kW \n Amount of water vapour removed per hour is %3.2f kg/hr \n Bypass factor is %3.3f',Hc,Hh,W,BPF)" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 7.3: EX7_3.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Chapter-7, Illustration 3, Page 347\n", +"//Title: Air Conditioning\n", +"//=============================================================================\n", +"clc\n", +"clear\n", +"\n", +"//INPUT DATA\n", +"RSH=10;//Room sensible heat in kW\n", +"RLH=10;//Room latent heat in kW\n", +"td1=25;//Inside temperature in oC\n", +"RH1=0.5;//Inside Re-Heat factor\n", +"h1=50.4;//Enthalpy at point 1 in kJ/kg\n", +"td2=35;//Out door Dry bulb temperature in oC\n", +"tw2=28;//Out door Wet bulb temperature in oC\n", +"CR=4;//Cooling coil ratio\n", +"BPF=0.1;//Cooling coil bypass factor\n", +"tADP=10;//Apparatus dew point temperature in oC\n", +"RH3=0.55;//Re-Heat factor at point 3\n", +"h3=58.2;//Enthalpy at point 3 in kJ/kg\n", +"RH4=0.95;//Re-Heat factor at point 4\n", +"h4=32.2;//Enthalpy at point 4 in kJ/kg\n", +"RH5=0.81;//Re-Heat factor at point 5\n", +"h5=36.8;//Enthalpy at point 5 in kJ/kg\n", +"RH6=0.54;//Re-Heat factor at point 6\n", +"h6=43.1;//Enthalpy at point 5 in kJ/kg\n", +"td6=22;//Temperature at point 6 in oC\n", +"\n", +"//CALCULATIONS\n", +"td3=((td2-td1)/5)+td1;//Temperature at point 3 from Psychrometric chart shown in Page 348 in oC\n", +"td4=(BPF*(td3-tADP))+tADP;//Temperature at point 4 from Psychrometric chart shown in Page 348 in oC\n", +"td5=td4+((td1-td4)/5);//Temperature at point 5 from Psychrometric chart shown in Page 348 in oC\n", +"RSHF=RSH/(RSH+RLH);//Room Sensible Heat Factor\n", +"QR=h1-h6;//Total heat removed in kJ/kg\n", +"S=(RSH+RLH)/QR;//Supply air quantity in kg/s\n", +"R=(S*(h6-h5))/3.5;//Refrigeration load due to reheat in ton\n", +"D=(S*4)/5;//Dehumidified air quantity in kg/s\n", +"T=(D*(h3-h4))/3.5;//Total refrigerating capacity in ton\n", +"Q=(D/5)/1.2;//Quantity of fresh air supplied in (m^3)/s\n", +"\n", +"//OUTPUT\n", +"mprintf('Supply air condition to the room is %3.2f kg/s \n Refrigeration load due to reheat is %3.2f ton \n Total refrigerating capacity is %3.2f ton \n Quantity of fresh air supplied is %3.3f (m^3)/s',S,R,T,Q)" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |