Sheet1KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 1 OF 24ADedusting points1Troughed belt conveyor2Steel apron feeder3Steel apron feeder, bulk material standing4Deep bucket conveyor5Box feeder6Weigh belt7Bucket elevator, chain - type8Bucket elevator, belt - type, single casing9Bucket elevator, belt - type, double casing10Vibrating trough without flex seal, bulk material falling11Vibrating trough without flex seal, bulk material standing12Vibrating trough with flex seal, bulk material falling13Vibrating trough with flex seal, bulk material standing14Vibrating screen without flex seal15Vibrating screen with flex seal16Aeropol17Poldos pressure vessel conveyor18Fluidor19Clinker silo feed, silo penthouse closed, 1 feed opening20Clinker silo feed, silo penthouse closed, 2 feed opening21Clinker silo feed, silo penthouse closed, 3 feed opening22Clinker silo feed, silo penthouse open, 1 feed opening23Clinker silo feed, silo penthouse open, 2 feed opening24Clinker silo feed, silo penthouse open, 3 feed opening25Clinker silo feed, cover trapezoidal plate, 1 feed opening26Clinker silo feed, cover trapezoidal plate, 2 feed opening27Clinker silo feed, cover trapezoidal plate, 3 feed opening28Bin on top, 1 feed opening29Bin on top, 2 feed opening30Bin on top, pneumatic feed31Polycom32Feed hopper33Crusher, moisture level < 6%34Hammer crusher35Vaccume relief36Bulk loading, open37Cement cooler38Other machines / aggregatesKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 2 OF 24BTypes of dusta)Non - Wearing / Abrasive dust1Dust from lime stone2Dust from clay3Dust from marl4Raw mix dust5Coal dust6Exit dust from raw material dryers7Raw gypsum dustb)Wearing / Abrasive dust1Dust from iron ore2Dust from slag3Exit dust from kiln4Cement kiln dust5Clinker dust6Cement dustCRecommended air velocities in dedusting pipesa)Non - Abrasive dustvmax. = max. air velocity = 19 m/svmin = min. air velocity = 13 m/sb)Abrasive dustvmax. = max. air velocity = 16 m/svmin. = min. air velocity = 10 m/sDRecommended standard pipe (OD) sizes139.71118219.11219.0273.01422323.91626355.61700406.41800457.21900558.82000609.62100711.2220081323009142400101625001067KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 3 OF 24ECalculation for Pipe size and air velocityV = Volume i.e. volume of to be dedusted in m3/hV = (pi/4) * (Di/1000)2 * vmax * 3600wherevmax = max velocity in m/sDi = pipe I D in mm.Di = 1000 * [(4 * V) / (3600 * pi * vmax)]0.5 in mmSelect standard pipe size D from given table corresponding to DiDiDDiDCalculatedSelectedCalculatedSelectedpipe I Dpipe O Dpipe I Dpipe O D> 0.0 < 131.7139.7>= 1059 < 11101118>= 160.3 < 211.1219.1>= 1110 < 12111219.0>= 211.1 < 265.0273.0>= 1211 < 14141422>= 265.0 < 315.9323.9>= 1414 < 16181626>= 315.9 < 347.6355.6>= 1618 < 16921700>= 347.6 < 398.4406.4>= 1692 < 17921800>= 398.4 < 449.2457.2>= 1792 < 18921900>= 449.2 < 500558.8>= 1892 < 19922000>= 500 < 602609.6>= 1992 < 20922100>= 602 < 703711.2>= 2092 < 21922200>= 703 < 805813>= 2192 < 22922300>= 805 < 906914>= 2292 < 23922400>= 906 < 10071016>= 2392 < 24922500>= 1007 < 10591067Calculate air velocity v considering selected pipe dia. Dv = 1000 * ((4 * V) / (3.6* pi * (D - 8)2) in m/sCalculated velocity should be >= vmin 1000 mm= 8.5 if belt width is 6 %Feed pointAir volume Vf in m3/hVf = 0.27 * ( width in mm) * 3.6 in m3/hExampleWidth2500Moisture level %4Vd =0.4 * ( 2500) *3.6 in m3/h=3600m3/hVf =0.27*( 2500) *3.6 in m3/h=2430m3/h6Weigh beltDischarge pointAir volume Vd in m3/hVd = 0.525 * kt * ( width in mm) * 3.6 in m3/hWherekt= 1 if temperature 40 0CFeed pointAir volume Vf in m3/hVf = 480 in m3/hwhen (tph * 1.4) < 480Vf =1.4 * ( tph ) in m3/hwhen (tph * 1.4) > 480ExampleWidth =2500mmtph =600tphTemp.300CKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 7 OF 24Vd =0.525 * 1 * ( 2500 ) *3.6 in m3/h=11385m3/hVf =1.4 * 600 in m3/h=840m3/h7Bucket elevator, chain - typeBottom bootAir volume Vb in m3/hVb = 0when height < 12 mVb = 14.61 * ( width in mm)0.67815 in m3/hIf temperature 40 0CTop hoodAir volume Vt in m3/hVt = 19.33 * ( width in mm)0.67836 in m3/hIf temperature 40 0CExampleWidth1000mmHeight30mTemp.300CVb =14.61 * ( 1000)0.67815 in m3/h=1582m3/hVt =19.33 * ( 1000)0.67836 in m3/h=2096m3/h8Bucket elevator, belt type, single casingTop hoodAir volume Vt in m3/hVt = 27.41 * ( width in mm)0.741 in m3/hIf temperature 40 0CExampleWidth1000mmHeight30mTemp.300CVb =27.41 * ( 1000)0.741 in m3/h=4580.46m3/hKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 8 OF 249Bucket elevator, belt type, double casingBottom hoodAir volume Vb in m3/hVb = 0 in m3/hIf height < 12 mVb = 11.8 * ( width in mm)0.741 in m3/hIf temperature 40 0CTop hoodAir volume Vt in m3/hVt = 15.62 * ( width in mm)0.741 in m3/hIf temperature 40 0CExampleWidth1000mmHeight30mTemp.300CVb =11.8 * ( 1000)0.741=1972m3/hVt =15.62 * ( width in mm)0.741=2610m3/h10Vibrating trough without flex seal, bulk material fallingFeed pointAir volume Vf in m3/hVf = 0.16 * ( width in mm) * 3.6 * (1 + 2 * Length in m )If temperature 40 0CDischarge pointAir volume Vd in m3/hVd = 0.6 * ( width in mm) * 3.6If temperature 40 0CExampleWidth1500mmLength8mTemp.1000CVf =0.2 * ( 1500) * 3.6 * (1 + 2 * 8 )=18360m3/hVd =(1500) * 3.6=5400m3/hKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 9 OF 2411Vibrating trough without flex seal, bulk material standingFeed pointAir volume Vf in m3/hVf = 0.08 * ( width in mm) * 3.6 * (1 + 2 * Length in m )If temperature 40 0CDischarge pointAir volume Vd in m3/hVd = 0.4 * ( width in mm) * 3.6If temperature 40 0CExampleWidth1500mmLength8mTemp.1000CVf =0.12 * ( 1500) * 3.6 * (1 + 2 * 8 )=11016m3/hVd =08 * (1500) * 3.6=4320m3/h12Vibrating trough with flex seal, bulk material fallingFeed pointAir volume Vf in m3/hVf = 0.08 * ( width in mm) * 3.6 * (1 + 2 * Length in m )If temperature 40 0CDischarge pointAir volume Vd in m3/hVd = 0.4 * ( width in mm) * 3.6If temperature 40 0CExampleWidth1500mmLength8mTemp.1000CVf =0.12 * ( 1500) * 3.6 * (1 + 2 * 8 )=11016m3/hVd =0.7 * (1500) * 3.6=3780KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 10 OF 2413Vibrating trough with flex seal, bulk material standingFeed pointAir volume Vf in m3/hVf = 0.05 * ( width in mm) * 3.6 * (1 + 2 * Length in m )If temperature 40 0CDischarge pointAir volume Vd in m3/hVd = 0.35 * ( width in mm) * 3.6If temperature 40 0CExampleWidth1500mmLength8mTemp.1000CVf =0.075 * ( 1500) * 3.6 * (1 + 2 * 8 )=6885m3/hVd =0.55 * (1500) * 3.6=297014Vibrating screen without flex sealFeed pointAir volume Vf in m3/hVf_spec = 0If length / width < 2.5Vf_spec = kt * 0.6 * ( width in mm ) * 3.6If length / width > 2.5kt = 1If temperature 40 0CVf = Vf_specScreen trackAir volume Vst in m3/hVst_spec = 0.3 * ( width in mm ) * 3.6If temperature 40 0CVst = 0If length / width < 2.5Vst = Vst_specIf length / width > 2.5Discharge pointAir volume Vd in m3/hVd_spec = 0.75 * ( width in mm ) * 3.6If temperature 40 0CKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 11 OF 24Vd = Vf_spec + Vst_spec + Vd_specIf length / width < 2.5Vd = Vd_specIf length / width > 2.5ExampleWidth1500mmLength8000mmTemp.1000CVf_spec =1.1 * 0.6 * (1500 ) * 3.6=3564Vf =Vf_spec=3564m3/hVst_spec =1.1*0.3 * ( 1500 ) * 3.6=1782Vst =Vst_spec=1782m3/hVd_spec =1.3 * ( 1500 ) * 3.6=7020Vd =Vd_spec=7020m3/h15Vibrating screen with flex sealFeed pointAir volume Vf in m3/hVf_spec = 0If length / width < 2.5Vf_spec = 0.2 * ( width in mm ) * 3.6If length / width > 2.5Vf = Vf_specIf temperature 40 0CScreen trackAir volume Vst in m3/hVst_spec = 0.3 * ( width in mm ) * 3.6If temperature 40 0CVst = Vf_spec +Vst_specIf length / width < 2.5Vst = Vst_specIf length / width > 2.5ExampleWidth1500mmLength8000mmTemp.1000CVf_spec =0.2 * (1500 ) * 3.6=1080Vf =1.1 * Vf_spec=1188m3/hKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 12 OF 24Vst_spec =0.55 * ( 1500 ) * 3.6=2970Vst =Vst_spec=2970m3/h16AeropolPressure vesselAir volume Vpa in m3/hVpa = 0.00000000002 * (Aeropol dia.)4 + 0.00000024 * (Aeropol dia.)3- 0.001 * (Aeropol dia.)2 + 1.353 * ( Aeropol dia.) - 221.1vessel dia. In mmAeropol dia80010001250160020002500m3/h3523924254987251443m3/min67781224Conveying pipeAir volume Vcp in m3/hVcp = tph * ((273 + temp) / 273) * 1.1ExampleAeropol dia.1000mmtph65Temperature800CVpa =391.90m3/hVcp =92.45m3/h17Poldos pressure vessel conveyorFluidisation airAir volume Vfl in m3/hVfl = 2 * (spec air volume) * ((273 + Temperature) / 293)Wherespec air volume = air volume for aeration in m3/hTemperature = aeration air temperature in 0 CCompressorAir volume Vc in m3/hVfl = (spec air volume) * ((273 + Temperature) / 293) * 1.1Wherespec air volume = air volume of compressor in m3/hTemperature = compressor air temperature in 0 CExampleVolume for aeration air in m3/h150Temperature of aeration air in 0 C30Volume for compressor air in m3/h8000Temperature of compressor air in 0 C30KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 13 OF 24Vfl =2 * (150) * ((273 + 30) / 293)=310m3/hVfl =(spec air volume) * ((273 + Temperature) / 293) * 1.1=910018FluidorAeration airAir volume Va in m3/hVa = ka * ((width in mm)/1000) * (length in m) * 60 * (273 + temp)/293 * 1.1ka =2in m3/min/m2 for raw meal, cement=5in m3/min/m2 for circulating material=6.7in m3/min/m2 for gritsExamplewidth300mmlength25mtemperature300CVa =2 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1for raw meal / cement1024m3/hVa =5 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1for circulating material2559m3/hVa =6.7 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1for grits3430m3/h19Clinker silo feed silo penthouse closed, 1 feed openingSiloAir volume Vs in m3/hVs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3Feed openingAir volume Vf in m3/hVf = width of opening in mm * height of opening in mm /1000 * 1.5 * 3.6Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia10000mmwidth2000mmheight2500mmVs =(10000/1000)2 * pi()/4 * (10000/2000) * 0.5773503/3 * 3227m3/hKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 14 OF 24Vf =2000 * 2500 /1000 * 1.5 * 3.627000m3/hVr =Vf =27000m3/has Vs < Vf20Clinker silo feed silo penthouse closed, 2 feed openingSiloAir volume Vs in m3/hVs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3Feed opening 1Air volume Vf1 in m3/hVf1 = width of opening1 in mm * height of opening1 in mm /1000 * 1.5 * 3.6Feed opening 2Air volume Vf2 in m3/hVf2 = width of opening2 in mm * height of opening2 in mm /1000 * 1.5 * 3.6Vf = Vf1 + Vf2Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia12000mmwidth11000mmwidth1900mmheight11250mmheight21300mmVs =(12000/1000)2 * pi()/4 * (12000/2000) * 0.5773503/3 * 3392m3/hVf1 =1000 * 1250 /1000 * 1.5 * 3.66750m3/hVf2 =900 * 1300 /1000 * 1.5 * 3.66318m3/hVf =Vf1+Vf2 =13068m3/hVr =Vf =13068m3/has Vs < Vf21Clinker silo feed silo penthouse closed, 3 feed openingSiloAir volume Vs in m3/hVs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3Feed opening 1Air volume Vf1 in m3/hVf1 = width of opening1 in mm * height of opening1 in mm /1000 * 1.5 * 3.6KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 15 OF 24Feed opening 2Air volume Vf2 in m3/hVf2 = width of opening2 in mm * height of opening2 in mm /1000 * 1.5 * 3.6Feed opening 3Air volume Vf3 in m3/hVf3 = width of opening3 in mm * height of opening3 in mm /1000 * 1.5 * 3.6Vf = Vf1 + Vf2 +Vf3Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia15000width11000width1900width3900height11250height21300height31300Vs =(15000/1000)2 * pi()/4 * (15000/2000) * 0.5773503/3 * 3765m3/hVf1 =1000 * 1250 /1000 * 1.5 * 3.66750m3/hVf2 =900 * 1300 /1000 * 1.5 * 3.66318m3/hVf3 =900 * 1300 /1000 * 1.5 * 3.66318Vf =Vf1 + Vf2 + Vf319386m3/hVr =Vf =19386m3/has Vs < Vf22Clinker silo feed silo penthouse open, 1 feed openingSiloAir volume Vs in m3/hVs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3Feed openingAir volume Vf in m3/hVf = width of opening in mm * height of opening in mm /1000 * 2 * 3.6Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia10000width2000height2500KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 16 OF 24Vs =(10000/1000)2 * pi()/4 * (10000/2000) * 0.5773503/3 * 3227m3/hVf =2000 * 2500 /1000 * 2 * 3.636000m3/hVr =Vf =36000m3/has Vs < Vf23Clinker silo feed silo penthouse open, 2 feed openingSiloAir volume Vs in m3/hVs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3Feed opening 1Air volume Vf1 in m3/hVf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6Feed opening 2Air volume Vf2 in m3/hVf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6Vf = Vf1 + Vf2Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia12000width11000width2900height11250height21300Vs =(12000/1000)2 * pi()/4 * (12000/2000) * 0.5773503/3 * 3392m3/hVf1 =1000 * 1250 /1000 * 2 * 3.69000m3/hVf2 =900 * 1300 /1000 * 2 * 3.68424m3/hVf =17424m3/hVr =Vf =17424m3/has Vs < Vf24Clinker silo feed silo penthouse open, 3 feed openingSiloAir volume Vs in m3/hVs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 17 OF 24Feed opening 1Air volume Vf1 in m3/hVf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6Feed opening 2Air volume Vf2 in m3/hVf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6Feed opening 3Air volume Vf3 in m3/hVf3 = width of opening3 in mm * height of opening3 in mm /1000 * 2 * 3.6Vf = Vf1 + Vf2 +Vf3Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia15000width11000width1900width3900height11250height21300height31300Vs =(15000/1000)2 * pi()/4 * (15000/2000) * 0.5773503/3 * 3765m3/hVf1 =1000 * 1250 /1000 * 2 * 3.66750m3/hVf2 =900 * 1300 /1000 * 2 * 3.66318m3/hVf3 =900 * 1300 /1000 * 2 * 3.66318Vf =Vf1 + Vf2 + Vf319386m3/hVr =Vf =19386m3/has Vs < Vf25Clinker silo feed cover trapezoidal plate, 1 feed openingSiloAir volume Vs in m3/hVs1 = Dia of silo / 2000 * pi() / 180 * 35Vs2 = 1.2 * 293 / (273 + temp)Vs3 = Vs1 * (1.2 - Vs2) * 10Vs4 = (2 * Vs3 / (3 * Vs2)) 0.5if(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6< Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 18 OF 24thenVs = (Dia of silo /1000) * pi() * width annular gap * Vs4 * 3.6otherwiseVs = (Dia of silo /1000) 2 * pi() / 4 * Dia of silo / 2000 * 0.5773503 / 3 * 6Feed openingAir volume Vf in m3/hVf = width of opening in mm * height of opening in mm /1000 * 2 * 3.6Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia10000annular gap50temp40width2000height2500Vs1 =10000 / 2000 * pi() / 180 * 353.054326191Vs2 =1.2 * 293 / (273 + temp)1.1233226837Vs3 =Vs1 * (1.2 - Vs2) * 102.3419753541Vs4 =(2 * Vs3 / (3 * Vs2)) 0.51.1789442436(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6=453Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6=6667Vs =(10000/1000) * pi() * width annular gap * Vs4 * 3.66667m3/hVf =2000 * 2500 / 1000 * 2 * 3.636000m3/hVr =Vf =36000m3/has Vs < Vf26Clinker silo feed cover trapezoidal plate, 2 feed openingSiloAir volume Vs in m3/hVs1 = Dia of silo / 2000 * pi() / 180 * 35Vs2 = 1.2 * 293 / (273 + temp)Vs3 = Vs1 * (1.2 - Vs2) * 10Vs4 = (2 * Vs3 / (3 * Vs2)) 0.5if(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6< Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 19 OF 24thenVs = (Dia of silo /1000) * pi() * width annular gap * Vs4 * 3.6otherwiseVs = (Dia of silo /1000) 2 * pi() / 4 * Dia of silo / 2000 * 0.5773503 / 3 * 6Feed openingAir volume Vf in m3/hVf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6Vf = Vf1 + Vf2Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia12000annular gap50temp40width11000width2900height11250height21300Vs1 =12000 / 2000 * pi() / 180 * 353.054326191Vs2 =1.2 * 293 / (273 + temp)1.1233226837Vs3 =Vs1 * (1.2 - Vs2) * 102.3419753541Vs4 =(2 * Vs3 / (3 * Vs2)) 0.51.1789442436(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6=784Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6=8000Vs =(12000/1000) * pi() * width annular gap * Vs4 * 3.68000m3/hVf1 =1000 * 1250 / 1000 * 2 * 3.69000m3/hVf2 =900 * 1300 / 1000 * 2 * 3.68424m3/hVf =Vf1 + Vf217424Vr =Vf =17424m3/has Vs < Vf27Clinker silo feed cover trapezoidal plate, 3 feed openingSiloAir volume Vs in m3/hVs1 = Dia of silo / 2000 * pi() / 180 * 35Vs2 = 1.2 * 293 / (273 + temp)KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 20 OF 24Vs3 = Vs1 * (1.2 - Vs2) * 10Vs4 = (2 * Vs3 / (3 * Vs2)) 0.5if(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6< Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6thenVs = (Dia of silo /1000) * pi() * width annular gap * Vs4 * 3.6otherwiseVs = (Dia of silo /1000) 2 * pi() / 4 * Dia of silo / 2000 * 0.5773503 / 3 * 6Feed openingAir volume Vf in m3/hVf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6Vf3 = width of opening3 in mm * height of opening3 in mm /1000 * 2 * 3.6Vf = Vf1 + Vf2 + Vf3Required air volume Vr in m3/hVr = VsIf Vs > VfVr = VfIf Vs < VfExampleSilo dia15000annular gap50temp40width11000width2900width3900height11250height21300height31300Vs1 =15000 / 2000 * pi() / 180 * 353.054326191Vs2 =1.2 * 293 / (273 + temp)1.1233226837Vs3 =Vs1 * (1.2 - Vs2) * 102.3419753541Vs4 =(2 * Vs3 / (3 * Vs2)) 0.51.1789442436(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6=1530Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6=10000.1589514472Vs =(15000/1000) * pi() * width annular gap * Vs4 * 3.610000m3/hVf1 =1000 * 1250 / 1000 * 2 * 3.69000m3/hVf2 =900 * 1300 / 1000 * 2 * 3.68424m3/hVf3 =900 * 1300 / 1000 * 2 * 3.68424m3/hKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 21 OF 24Vf =Vf1 + Vf2 + Vf325848Vr =Vf =25848m3/has Vs < Vf28Bin on top 1 feed openingV =1 * width1 * height1 / 1000 *3.6m3/hif temperature 400CExamplewidth11000mmheight1200mmtemp.300CV =1000 * 1200 /1000 * 3.6=432029Bin on top 2 feed openingV1 =1 * width1 * height1 / 1000 *3.6m3/hif temperature 400CV2 =1 * width2 * height2 / 1000 *3.6m3/hif temperature 400CV =V1 + V2m3/hExamplewidth1800mmwidth1500mmheight1000mmheight800mmtemp.300Ctemp.300CV1 =800 * 1000 /1000 * 3.6=2880V2 =500 * 800 /1000 * 3.6=1440V =4320m3/h30Bin on top PNEUMATIC FEEDV =1.4 * tphm3/h31PolycomKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 22 OF 2432Feed hopperV =0.5 * width * height / 1000 * 3.6m3/h33Crusher moisture level < 6%InletVi =61 * width_inlet * height_inlet / 1000000 * 60m3/hOutletVo =76 * width_inlet * height_inlet / 1000000 * 60m3/h34Hammer crusherInletVi =61 * width_inlet * height_inlet / 1000000 * 60m3/hOutletVo =107 * width_inlet * height_inlet / 1000000 * 60m3/h35Vacuume reliefAir volume V in m3/hY1 = 1.3089969X = Abs( Temp. * 100) / ( 8 * 7.85 * 9.81 )If X > 1 ThenY2 = Atn(-1 / Sqr ( -1 * 1 + 1 ) ) +2 * Atn ( 1 ) '=arccos(1)'ElseY2 = Atn(-X / Sqr ( -X * X + 1 ) ) +2 * Atn ( 1 ) '=arccos(X)'Y3 = width * length * 0.000001Y4 = Y3 * ( Cos ( Y2 ) - Cos ( Y1 )If Y2 > Y1 ThenV = 0ElseV = ( 2 * Y42 * Abs((Temp1 * 100) / (1.8 *1.2)))0.5 * 3600 * ((273 +Temp) / 293 )Examplewidth550mmlength550mmTemp1= Temp600CTemp2= Temp150CY1 =1.3089969X =Abs( 5 * 100) / ( 8 * 7.85 * 9.81 )0.8115987196Y2 =ACOS(X)As X < 10.6239128654KRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 23 OF 24Y3 =width * length * 0.0000010.3025Y4 =Y3 * ( Cos ( Y2 ) - Cos ( Y1 ))0.1672158401Y2 < Y1 HenceV =( 2 * Y42 * Abs((Temp1 * 100) / (1.8 *1.2)))0.5 * 3600 * ((273 +Temp) / 293 )14720.7403856774m3/h36Bulk loading openAir volume in m3/hIf Dia of hood > 0V = Dia. Of hood / 1000 * PI(0 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293If Dia of hood = 0V =( width / 1000 + length / 1000) * 2 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293Example1Dia. Of hood500mmTemp200CV =Dia. Of hood / 1000 * PI(0 * 0.1 * 2.5 * 3600 * (273 +Temp) / 2931413.7166941154m3/hExample2width800mmlength400mmTemp200CV =(width / 1000 + length / 1000) * 2 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293216037Cement coolerFluidorAir volume Vf in m3/hVf = ka * ((width in mm)/1000) * (length in m) * 60 * (273 + temp)/293 * 1.1ka =2in m3/min/m2 for raw meal, cement=5in m3/min/m2 for circulating materialExamplewidth500mmlength25mtemperature1000CVa =2 * (500/1000) * 25 * 60 * (273 + 100)/293 * 1.1for raw meal / cement2101m3/hVa =5 * (500/1000) * 25 * 60 * (273 + 30)/293 * 1.1for circulating material4266m3/hScrew conveyorAir volume Vsc in m3/hKRUPP INDUSTRIES INDIA LTDDESIGNDEDUSTINGCalculation ProcedureMANUALSHEET 24 OF 24Dsc is Dia. Of screw conveyor in mmIf( Dsc / 1000)2 / 2 - 0.5 * (Dsc / 1000 )2 * PI() / 4 *2* 3600 < 510 + 1.237 * DscThenVsc = 510 + 1.237 *DscElseVsc = ( Dsc / 1000)2 / 2 - 0.5 * (Dsc / 1000 )2 * PI() / 4 *2* 3600ExampleDsc500mm( Dsc / 1000)2 / 2 - 0.5 * (Dsc / 1000 )2 * PI() / 4 *2* 3600-706.7333470577510 + 1.237 * Dsc1128.5Vsc =510 + 1.237 *Dsc1128.5m3/hCement coolerAir volume Vcc in m3/hVcc = tph * 1.2Exampletph100Vcc =tph * 1.2120m3/h38Other machineV = Air volume in m3/h

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