pierderi de presiune

6380100112125140150160180200224250280300315355400450500560600630710800900100011201250140015001600R = (/dn)xxv/2de= 1.55 A0.625/P0.2de= 1.30 x ((a x b)0.625/ (a + b)0.25)canal principalcanal secundarR - pierdere de presiune liniaraA = cross-sectional area oval duct (m2, in2)de= equivalent diameter (mm, inches) - factor de frecare in functie de materialul tubulaturii si rugozitatea supafeteiP = perimeter oval duct (m, inches)a= length of major or minor side (mm, inches) - densitatea aeruluiERROR:#REF!A = a b / 4b= length of minor or major side (mm, inches)v - viteza media a aerului prin tubulaturaa = major dimension of the flat oval duct (m, in)circularab = minor dimension of the flat oval duct (m, in)rectangularaP 2 (1/2 (a2+ b2))1/2

k
MIHAI: rugozitateabsolutacanale aer[mm]nx10-6
MIHAI: viscozitatecinematica aer[m/s]r
MIHAI: densitate aer [kg/m]d
MIHAI: grosimematerialtubulatura[m]1 / 1/2 = -2 log [ 2.51 / (Re 1/2) + (k / dh) / 3.72 ]0.1515.101.20.06 = D'Arcy-Weisbach friction coefficientRe = Reynolds Numberk = roughness of duct, pipe or tube surfacedh = hydraulic diameter

tubulatura circularatubulatura rectangularaDebit de aerlungime tronsonviteza propusaArie necesaratip tubulaturadiemnsiuni tubulatura propusadiametru hidraulicdimensiuni tubulatura rectangularadiametru hidraulicDiamentru echivalentArie rezulatatadimensiuni tub. circularamaterial canal de aerrugozitate absoluta canale aerviteza realaReR
Iulia: Iulia:Pierdere de presiune longitudinalahrihrl(hri+hrl)186635.1841666667m/hm/smm/smababmm/smmHO/mmmHOmmHOmmHOmmmmmmmmmmmmmmmmmmmmREFULAREcanal principal74.20.02061111116.4350.0041circulara9145721002002002002190.041002.62173510.0314888660.13000.83591.7210.9111.75ERROR:#REF!canal principal21150.587534.4340.1469rectangulara5422714323154004000.163153.6718750ERROR:#DIV/0!0.258.60751.41.159.7655.088ERROR:#REF!canal principal013.580rectangulara0ERROR:#DIV/0!06306006000.3663000ERROR:#DIV/0!0.0650.87751.770.000.8832.422.39

TOTAL PRESIUNE TR1=TR2=TR3 HALA A36.34rabDecanal secundar7920.2234.433.50.0629rectangulara3551772833153002002402660.063153.6666666667582780.0232601220.13.4431.030.8526.68ERROR:#REF!1.3800650717.24137931030.8365384615canal secundar15840.446.4350.088rectangulara4202103350400350373.33333333334090.143.1428571429777040.02164598260.0550.353652.21.3328.3634.43canal secundar23760.666.4350.132rectangulara5142574100400500444.44444444444880.23.3971300.02047150640.0560.360082.161.4430.169.645r/dcanal secundar31680.886.4350.176rectangulara59329747305005005005470.253.521165560.01955935320.050.32152.081.5832.0611.5740.0018125canal secundar39601.16.4350.22rectangulara6633325290600500545.45454545455980.33.66666666671324500.01894415150.0650.417952.081.7134.1912.86canal secundar47521.32250.264rectangulara7273635800600550573.91304347836280.3341520300.01830230650.0580.1162.082.0436.3414.146canal secundar01.250rectangulara0ERROR:#DIV/0!00120010001090.909090909111961.200ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!2.50.00ERROR:#DIV/0!4.6

Iulia: Iulia:SAS ZONA LIFTSAS ZONA LIFT

5.28TOTAL PRESIUNE TR.2 HALA AERROR:#DIV/0!canal principal04.750circulara0ERROR:#DIV/0!063063000ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!1.250.00ERROR:#DIV/0!canal principal1036.80.2886.4350.0576rectangulara3391702710300250272.72727272732990.0753.84693560.02226984220.070.45012.252.0324.879.3canal principal2073.60.5766.4350.1152rectangulara4802403830400350373.33333333334090.144.11428571431017220.02023645450.050.32152.252.3327.527.073canal principal3110.40.8646.4350.1728rectangulara5882944690400500444.44444444444880.24.321271520.01913847590.040.25722.252.5730.349.645canal principal4147.21.1526.4350.2304rectangulara67933954205005005005470.254.6081525830.01828570090.040.25722.252.9233.5211.574canal principal51841.446.4350.288rectangulara7593796060600500545.45454545455980.34.81733900.01771055360.040.25723.254.5838.3612.86canal principal6220.81.728250.3456rectangulara8314166630600550573.91304347836280.335.23636363641990210.01711052840.050.13.255.4543.9114.146canal principal029.950rectangulara0ERROR:#DIV/0!00120010001090.909090909111961.200ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!1.550.00ERROR:#DIV/0!4.6131.56canal principal10972.83.04833.750.6096rectangulara1104552881018001200144015982.161.41111111111345700.0188690956004.550.55ERROR:#DIV/0!202.2ASPIRATIE HALA Acanal principal18662.45.18417.580.648rectangulara11385699088008008008750.648008.14291390.01412012860.061.0528.039.08canal secundar14925.64.146280.5183rectangulara1018509812800650717.24137931037870.528017.97307692313787170.01456831920.070.141.756.806.9456canal principal74522.072480.2588rectangulara7193605746006006006560.368025.752284770.01653017790.051.22.755.5615.845.857.6EVACUARE HALA Acanal principal18662.45.1841380.648rectangulara11385699088008008008750.648028.14291390.01412012860.810.428.0318.4341.6REFULARE HALA BTOTAL PRESIUNE TR1 HALA Bcanal principal25000.69444444444.750.1389circulara5272644216306302.23930400.02069286970.010.0471.250.380.43canal principal25000.69444444446.450.1389circulara5272644214004005.531464900.01847294570.090.5762.254.214.789.3canal principal50001.38888888891250.2778rectangulara7453735950700500583.33333333336440.353.96825396831532990.0182643120.030.362.252.172.538.04canal principal100002.777777777812.650.5556rectangulara10545278410900500642.85714285717260.456.17283950622627980.01596182830.050.632.255.245.8728.8canal principal150004.166666666712.850.8333rectangulara1291645103009009009009840.815.14403292183065980.01535839450.030.3842.253.644.0335.28canal principal200005.555555555610.151.1111rectangulara1491745118901000900947.368421052610370.96.17283950623872820.01448709540.030.3033.257.577.8846.08canal principal250006.944444444412.651.3889rectangulara16678331330012009001028.571428571411331.086.43004115234379970.01404818970.030.3783.258.228.6038.38canal principal300008.33333333332351.6667rectangulara182691314570120010001090.909090909111961.26.94444444445017060.01357925130.030.691.554.575.2652.9255.088101.2ERROR:#REF!ERROR:#REF!5.2856Tubulatura rectangulara:ERROR:#REF!m

TOTAL PRESIUNE TR2 HALA Bcanal principal25000.69444444444.750.1389circulara5272644216306302.23930400.02069286970.010.0471.250.380.43canal principal25000.69444444446.450.1389circulara5272644214004005.531464900.01847294570.090.5762.254.214.789.3canal principal50001.38888888891250.2778rectangulara7453735950700500583.33333333336440.353.96825396831532990.0182643120.030.362.252.172.538.0417.34450.84canal principal100002.777777777812.650.5556rectangulara10545278410900500642.85714285717260.456.17283950622627980.01596182830.050.632.255.245.8728.8canal principal150004.166666666712.850.8333rectangulara1291645103009009009009840.815.14403292183065980.01535839450.030.3842.253.644.0335.28canal principal200005.555555555610.151.1111rectangulara1491745118901000900947.368421052610370.96.17283950623872820.01448709540.030.3033.257.577.8846.08canal principal250006.944444444412.651.3889rectangulara16678331330012009001028.571428571411331.086.43004115234379970.01404818970.030.3783.258.228.6038.38canal principal300008.3333333333551.6667rectangulara182691314570120010001090.909090909111961.26.94444444445017060.01357925130.030.151.554.574.7252.92canal secundar50001.38888888893250.2778rectangulara7453735950700500583.33333333336440.353.96825396831532990.0182643120.030.962.252.173.1322canal principal350009.7222222222851.9444rectangulara197298615730120010001090.909090909111961.28.10185185195853230.01306589760.040.321.556.226.5476.835.2canal principal6500018.05555555562053.6111rectangulara268713442144018001200144015982.168.35905349797971550.01209490480.030.61.556.6213.77120canal secundar25000.6944444444250.1389rectangulara5272644210400500444.44444444444880.23.47222222221021990.02021280040.030.062.251.661.723.6ASPIRATIE HALA Bcanal principal325009.027777777817.561.5046rectangulara1735867138412001200120013121.448006.26929012354982220.01360292870.020.3524.815.16canal secundar325009.0277777778261.5046rectangulara1735867138412001200120013121.448016.26929012354982220.01360292870.020.041.754.214.2584canal principal6500018.05555555562463.0093rectangulara24531227195718001200144015982.168028.35905349797971550.01209490480.030.722.7511.7517.639.6144EVACUARE HALA Bcanal principal6500018.05555555561363.0093rectangulara245312271957150012201345.588235294114771.838029.86642380098792150.01180223820.050.65211.9112.5670.72ERROR:#REF!

dimensiuni tubulatura circulara

Sheet30SurfaceAbsolute Roughness Coefficient90obend, sharp1.3- k -90obend, with vanes0.7(m) 10-390obend,rounded0.5Cupru, plumb, alama, aluminiu (nou)0.001 - 0.002radius/diameter duct 1eav de oel comerciale0.045 - 0.0945obend, sharp0.5ntins oel0.01545obend, rounded0.2Otel sudat0.045radius/diameter duct 1fonta0.25 - 0.8T, flow to branch0.3Rusty cast iron1.5 - 2.5(applied to velocity in branch)Foaie sau font asfaltate0.01 - 0.015Flow from duct to room1Beton obisnuit0,3 - 1Flow from room to duct0.35Beton aspru0,3 - 5Reduction, tapered0.2Lemn finisat0.18 - 0,9Enlargement, abrupt(1 - v2/ v1)2Lemn obisnuit5(due to speed before reduction)(v1= velocity before enlargement and v2= velocity after enlargement)Enlargement, tapered angle < 8o0.15 (1 - v2/ v1)2(due to speed before reduction)(v1= velocity before enlargement and v2= velocity after enlargement)Enlargement, tapered angle > 8o(1 - v2/ v1)2(due to speed before reduction)(v1= velocity before enlargement and v2= velocity after enlargement)Grilles, 0.7 ratio free area to total surface3Grilles, 0.6 ratio free area to total surface4Grilles, 0.5 ratio free area to total surface6Grilles, 0.4 ratio free area to total surface10Grilles, 0.3 ratio free area to total surface20Grilles, 0.2 ratio free area to total surface50

Sheet1