flujo masicodatos experimentalesENTRADASALIDAtiempo(min)T sensor(interior secador C)T bulbo seco (F)T bulbo humedo (F)T bulbo seco (F)T bulbo humedo (F)calculo de fraccion masica de agua (kg agua/kg A.H)CALCULO DE LA VELOCIDAD MAXIMA042.2736873690.01371041.672.5687370fraccion masica de aire seco (kg aire seco/kg A.H)2041.57268.575740.98633041.67268.581734541.772688273calculo de la viscosidad de aire humedoC=0.98coeficiente de pitot6041.773698170viscosidad del aire seco a(22,5 C)0.00001818http://es.wikipedia.org/wiki/Aireg=9,81 m/s27541.572688974Kg/m.sh:presion dinamica en metrosmetros9041.67268967554266.3303388366haceite=2,7 pulg ---->0.0685810540.672.5699876u aire humedo(kg/m.s)0.0000184h agua=3,3 cm12041.37268.5987513541.471.568100769.8m/s15041.571.568.51017616541.671.568.51027618041.572681027719541.571.56810176calculo del reynolds max21041.571.5681017622541.6726810176longitud de circunferencia(m)0.399240726810277Dext (m)0.127promedio41.5272.1568.259274.39espesor(m)0.005Entrada(promedio)Dint(m)0.117T bulbo seco(F)72.15Re max73756.2913043478T bulbo humedo(F)68.25Densidad del aire humedo (kg A.H/m3 A.H)Con el Re Mximo, se ingresa a la grfica Vmedia / Vmax vs Re mxDe la carta psicrometrica1.1836"valiente"Habs(lb agua/lb aire seco)Ve(pie3/lb aire seco)Vmedia / Vmax0.810.013913.72picnometro+aceite (g)70.1545Vmedia(m/s)7.94Habs(kg agua/kg aire seco)Ve(m3/kg aire seco)picnometro (g)24.6792CAUDAL(m3/s)0.08540.01390.8566picnometro + agua (g)76.1754CALCULO DE FLUJO MASICO a traves de la tuberia de pvcDensidad del aceite (kg/m3)G(kg/h)363.89densidad agua(kg/m3)997.73881.0761viscosidad agua(kg/m.s)0.000951049a 72,15 F =22,31 C"valiente"

bandeja delgadabandeja delgadaal demorarnos chapo agua del ambiente (% humedad 11,8) humedad base secapor diferenciasanaliticotiempo(min)tiempo(h)arena +agua+bandeja(g)bandeja(g)agua+arena(g)arena seca(g)agua(g)agua (kg)X(kg agua/kg arena seca)tiempo(h)tww/tN1/NdW/dtN1/N00504.5230274.5242.132.40.03240.133800.01410.62391.6028100.167501.9230271.9242.129.80.02980.12310.1670.1670.00260.01560.69031.44860.01410.62391.6028200.333499.6230269.6242.127.50.02750.11360.3330.1660.00230.01390.6151.6260.01410.62391.6028300.5497.3230267.3242.125.20.02520.10410.50.1670.00230.01380.61061.63770.01410.62391.6028450.75493.9230263.9242.121.80.02180.090.750.250.00340.01360.60181.66170.01410.62391.6028601490.9230260.9242.118.80.01880.077710.250.0030.0120.5311.88320.00399248550.17675.6593751.25487.9230257.9242.115.80.01580.06531.250.250.0030.0120.5311.88320.00268629780.11898.4104901.5486230256242.113.90.01390.05741.50.250.00190.00760.33632.97350.00180744450.0812.51051.75484.5230254.5242.112.40.01240.05121.750.250.00150.0060.26553.76650.00121611820.053818.58741202482.8230252.8242.110.70.01070.0442y = 0.0333e-0.585x20.250.00170.00680.30093.32340.00081825110.036227.62431352.25480.5230250.5242.18.40.00840.0347R = 0.9932.250.250.00230.00920.40712.45640.00055055080.024440.98361502.5479.4230249.4242.17.30.00730.03022.50.250.00110.00440.19475.13610.00037043180.016460.97561652.75478.5230248.5242.16.40.00640.02642.750.250.00090.00360.15936.27750.00024924070.01190.90911803477.8230247.8242.15.70.00570.023530.250.00070.00280.12398.0710.00016769880.0074135.13511953.25477.3230247.3242.15.20.00520.02153.250.250.00050.0020.088511.29940.00011283420.0052002103.5476.9230246.9242.14.80.00480.01983.50.250.00040.00160.070814.12430.00007591920.0034294.11762253.75475.5230245.5242.13.40.00340.0143.750.250.00140.00560.24784.03550.00005108130.0023434.78262404475.4230245.4242.13.30.00330.013640.250.00010.00040.017756.49720.00003436950.0015666.66675008.333472.4230242.4242.10.30.00030.00128.3334.3330.0030.00070.03132.25810.00000003580ERROR:#DIV/0!este ultima tiempo representa al infinito

ECUACION DE LA RECTAECUACION DE LA CURVACALCULO DEL COEFICIENTE DE TRANSFERENCIA DE CALOR POR CONVECCIONW=-0,0141*t+0,0323W=0,0317*exp(-0,564t)W(kg) y t(h)W(kg) y t(h)VELOCIDAD DE SECADOdW/dt=0,0141 kg agua/harea de bandeja delgadadw/dt=-0,0179*exp(-0,564t)VELOCIDAD DE SECADO POR UNIDAD DE AREA0.0226m2N0.6239kg agua/ m2.hhc (Coeficiente de transferencia de calor por conveccin)= KJ/(h)(m2)(C)T (Temperatura de bulbo seco del aire, interior del secador) = 41,52CTw (Temperatura de bulbo hmedo del aire, salida del secador) =23,33 C=74,39FPARAMETROS CRITICOS clw (Calor latente de vaporizacin del agua a Tw) = 2451.3KJ/Kg H2O "periodo antecritico"GRAFICOTc(INTERSECTANDO LAS ECUACIONES)1.04hA (rea de transferencia) = 0.0226m2humedad criticaXc0.0732kg agua/kg arena secadW / dt (velocidad de secado) = 0.0141 kg H2O/ hN0.6239

S = peso de arena seca hc84.08 A = rea de la superficie expuesta de secado CALCULO DEL COEFICIENTE DE TRANSFERENCIA DE MASA Xi= humedad inicial de la muestra referida al slido seco : kgAgua/kg Arena Seca Nc = Velocidad de secado kg/m2-h

"periodo post critico"Dnde:KG es el coeficiente de secado en Kg H2O/h-m2

Ci Calor hmedo (sistema aire-agua)Donde Ci es:Habs (kg agua/kg AS)0.0139Se grafica Inversa de la Velocidad de Secado vs Humedad,Ci1.0261Kj/Kg.CEsta grafica se puede aproximar a la siguiente ecuacin:KG81.941/N=0,5322*X^(-0,613)

p4.2645tiempo total de secado p+ c5.3045h

CorrecinBandeja delgadaBandeja medianaBandeja gruesatiempo(h)agua (kg)tiempo(h)agua (kg)tiempo(h)Agua(kg)00.032400.058100.08820.1670.02980.1670.05620.1670.08620.3330.02750.3330.0540.3330.08460.50.02520.50.05210.50.08280.750.02180.750.04840.750.079910.018810.045610.07711.250.01581.250.0421.250.07411.50.01391.50.03921.50.07111.750.01241.750.03611.750.068320.010720.033820.06612.250.00842.250.03152.250.06372.50.00732.50.02952.50.06152.750.00642.750.02782.750.059330.005730.026230.05753.250.00523.250.02463.250.05543.50.00483.50.02343.50.05373.750.00343.750.02213.750.051940.003340.021140.05028.3330.000316.6670.0064250.0136

bandeja medianabandeja medianaal demorarnos chapo agua del ambiente (% humedad 11,8)humedad base secapor diferenciasanaliticotiempo(min)tiempo(h)arena +agua+bandeja(g)bandeja(g)agua+arena(g)arena seca(g)agua(g)X agua (kg)(kg agua/kg arena seca)tiempo(h)tww/tN1/NdW/dtN1/N00768.4276492.4434.358.10.05810.133778494100.01230.53947368421.8537100.167766.5276490.5434.356.20.05620.1294036380.1670.1670.00190.01140.520.01230.53947368421.8537200.333764.3276488.3434.3540.0540.12433801520.3330.1660.00220.01330.58331.71440.01230.53947368421.8537300.5762.4276486.4434.352.10.05210.11996315910.50.1670.00190.01140.520.00819488120.35942461352.7822450.75758.7276482.7434.348.40.04840.11144370250.750.250.00370.01480.64911.54060.00597455560.26204191113.8162601755.9276479.9434.345.60.04560.1049965462y = 0.0584e-0.264x10.250.00280.01120.49122.03580.00435580620.19104413165.2344751.25752.3276476.3434.3420.0420.0967073452R = 0.99671.250.250.00360.01440.63161.58330.00317564170.13928252967.1797901.5749.5276473.5434.339.20.03920.09026018881.50.250.00280.01120.49122.03580.00231523160.10154524449.84781051.75746.4276470.4434.336.10.03610.08312226571.750.250.00310.01240.54391.83860.00168794150.074032520113.50761202744.1276468.1434.333.80.03380.077826387320.250.00230.00920.40352.47830.00123060970.053974108418.52741352.25741.8276465.8434.331.50.03150.07253050892.250.250.00230.00920.40352.47830.00089718760.039350333825.41271502.5739.8276463.8434.329.50.02950.06792539722.50.250.0020.0080.35092.84980.00065410310.028688732734.85691652.75738.1276462.1434.327.80.02780.06401105232.750.250.00170.00680.29823.35350.00047688010.020915791747.81081803736.5276460.5434.326.20.02620.060326962930.250.00160.00640.28073.56250.00034767390.015248855665.57871953.25734.9276458.9434.324.60.02460.05664287363.250.250.00160.00640.28073.56250.00025347490.011117322389.94972103.5733.7276457.7434.323.40.02340.05387980663.50.250.00120.00480.21054.75060.00018479830.0081051889123.37782253.75732.4276456.4434.322.10.02210.0508864843.750.250.00130.00520.22814.3840.0001347290.0059091645169.22872404731.4276455.4434.321.10.02110.048583928240.250.0010.0040.17545.70130.00009822540.0043081322232.1192100016.667716.7276440.7434.36.40.00640.014736357416.66712.6670.01470.00120.052619.011400.00000000052085634206.9955este ultima tiempo representa al infinitoECUACION DE LA RECTAW=-0,0127*t+0,0582W(kg) y t(h)VELOCIDAD DE SECADOdW/dt=0,0127 kg agua/harea de bandeja medianaVELOCIDAD DE SECADO POR UNIDAD DE AREA0.0228N0.557kg agua/ m2.hCALCULO DEL COEFICIENTE DE TRANSFERENCIA DE CALOR POR CONVECCION

hc (Coeficiente de transferencia de calor por conveccin)= KJ/(h)(m2)(C)T (Temperatura de bulbo seco del aire, interior del secador) = 41,52CTw (Temperatura de bulbo hmedo del aire, salida del secador) =23,33 C=74,39Flw (Calor latente de vaporizacin del agua a Tw) = 2451.3KJ/Kg H2O A (rea de transferencia) = 0.0228m2dW / dt (velocidad de secado) = 0.0127 kg H2O/ h

hc75.06CALCULO DEL COEFICIENTE DE TRANSFERENCIA DE MASA

Dnde:KG es el coeficiente de secado en Kg H2O/h-m2

Ci Calor hmedo (sistema aire-agua)Donde Ci es:Habs (kg agua/kg AS)0.0139Ci1.0261Kj/Kg.CKG73.15

bandeja gruesabandeja medianaal demorarnos chapo agua del ambiente (% humedad 11,8)humedad base secapor diferenciasanaliticotiempo(min)tiempo(h)arena +agua+bandeja(g)bandeja(g)agua+arena(g)arena seca(g)agua(g)Agua(kg)(kg agua/kg arena seca)tiempo(h)tww/tN1/NdW/dtN1/N001061.6314747.6659.488.20.08820.133757961800.0120.52863436121.8917100.1671059.6314745.6659.486.20.08620.1307249014y = -0.012x + 0.088210100.0020.00020.0088105727113.50.0120.52863436121.8917200.3331058314744659.484.60.08460.1282984531R = 120100.00160.000160.0070484581141.87500.000000000115394934318.246300.51056.2314742.2659.482.80.08280.125568698830100.00180.000180.0079295154126.1111001431221044171090450.751053.3314739.3659.479.90.07990.121170761345150.00290.00019333330.0085168869117.413800405695343315424000000006011050.5314736.5659.477.10.07710.1169244768y = 0.0885e-0.144x60150.00280.00018666670.0082232012121.6071001149988062697500000000000000000751.251047.5314733.5659.474.10.07410.1123748863R = 0.999375150.0030.00020.0088105727113.50032597676215340000000000000000000000000901.51044.5314730.5659.471.10.07110.107825295790150.0030.00020.0088105727113.5009240169781828950000000000000000000000000000001051.751041.7314727.7659.468.30.06830.1035790112105150.00280.00018666670.0082232012121.6071002619227733688750000000000000000000000000000000000000012021039.5314725.5659.466.10.06610.1002426448y = 0.0008x2 - 0.013x + 0.0889120150.00220.00014666670.0064610866154.7727007424489033107910000000000000000000000000000000000000000000001352.251037.1314723.1659.463.70.06370.0966029724R = 0.9996135150.00240.000160.0070484581141.87500210455305942821000000000000000000000000000000000000000000000000000001502.51034.9314720.9659.461.50.06150.093266606150150.00220.00014666670.0064610866154.7727005965587072992950000000000000000000000000000000000000000000000000000000000001652.751032.7314718.7659.459.30.05930.0899302396165150.00220.00014666670.0064610866154.7727001691011256096800000000000000000000000000000000000000000000000000000000000000000000018031030.9314716.9659.457.50.05750.0872004853180150.00180.000120.0052863436189.1667004793357356548390000000000000000000000000000000000000000000000000000000000000000000000000001953.251028.8314714.8659.455.40.05540.0840157719195150.00210.000140.0061674009162.142900135872985260965000000000000000000000000000000000000000000000000000000000000000000000000000000000002103.51027.1314713.1659.453.70.05370.0814376706210150.00170.00011333330.0049926579200.2941003851469179218480000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002253.751025.3314711.3659.451.90.05190.0787079163225150.00180.000120.0052863436189.1667001091741291322870000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000024041023.6314709.6659.450.20.05020.076129815240150.00170.00011333330.0049926579200.294100309466074299786000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000150025987314673659.413.60.01360.0206248104150012600.03660.00002904760.0012796308781.475400ERROR:#DIV/0!este ultima tiempo representa al infinitoECUACION DE LA RECTAW=-0,0097*t+0,0869W(kg) y t(h)VELOCIDAD DE SECADOdW/dt=0,0097 kg agua/harea de bandeja medianaVELOCIDAD DE SECADO POR UNIDAD DE AREA0.0227N0.4273kg agua/ m2.hCALCULO DEL COEFICIENTE DE TRANSFERENCIA DE CALOR POR CONVECCIONhc (Coeficiente de transferencia de calor por conveccin)= KJ/(h)(m2)(C)T (Temperatura de bulbo seco del aire, interior del secador) = 41,52CTw (Temperatura de bulbo hmedo del aire, salida del secador) =23,33 C=74,39Flw (Calor latente de vaporizacin del agua a Tw) = 2451.3KJ/Kg H2O A (rea de transferencia) = 0.0227m2dW / dt (velocidad de secado) = 0.0097 kg H2O/ h

hc57.58CALCULO DEL COEFICIENTE DE TRANSFERENCIA DE MASA

Dnde:KG es el coeficiente de secado en Kg H2O/h-m2

Ci Calor hmedo (sistema aire-agua)Donde Ci es:Habs (kg agua/kg AS)0.0139Ci1.0261Kj/Kg.CKG56.12

humedad y bandejasdatos experimetalesbandeja +arena seca (g)bandeja(g)arena seca(g)bandeja delgada472.1230242.1bandeja mediana870.9276594.9bandeja gruesa1283.7314969.7peso total arena seca1806.7Debemos agregar agua(g)200.7total2007.4arena +agua del ambiente (g) 1810.2agua absorbida del ambien(g)3.5agua que hace falta agregar(g)197.2% humedad10espesor del lecho(m)area(m2)largo(m)ancho(m)bandeja delgada0.010.02260.2220.102bandeja mediana0.0190.02280.2240.102bandeja gruesa0.0290.02270.2230.102

tramos rectosespesor delgadoespesor medioespesor gruesotiempo(h)agua en (kg)000.03240.05810.0882100.1670.02980.05620.0862200.3330.02750.0540.0846300.50.02520.05210.0828450.750.02180.04840.07996010.04560.0771751.250.0420.0741901.50.03920.07111051.750.03610.068312020.06611352.250.06371502.50.06151652.750.059318030.05751953.250.05542103.50.05372253.750.051924040.0502