7/27/2019 Factor Densidad

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$sl$strlrl [$]${}trmmEI{$B? . r . DesignffiBg$STANDARD APPLICATIONSwn in the performance tab,lesrpages 12-49, are based on standard air at the fan!@ 0lq? 51tr "' *&_r-i@ris . -. ". p * osia=a'ffi ;t""cr. - i'to". iFans selected for slandard condilions can be selecled directly from the performance tables IBold lines in the tables delineate areas of maximum efficiency and minimum sound levels. lwhen noise levels and maximum eiciency are not of prime coniJiatiJn, qitirri"i I!3! bu.obtaineci by specifying a srnailer fan-with higher horsepower-slct frr riingr Isnown in the lower portions of the tables.(A) Maximum .e-flic_!919y setection-pg. 26 (B) First atternative selection-pg. 2s (c)- , .BCS490 SWSI, Class I BCS445 SWS|, Ctass I ' -24996 cfm 1816 fpm O.V. 25001 cfm 2ZOS tpm O.V.607 fiPM 14.26 BHp 718 RpM ls.oi eHp

Pressure Correction1. Usiirg Table 1, below, select Static Pressure correcton factor for required altitude andtemperature.Factor for 500" F. and 2,500' elevation:1.99Thus: 5.0" SP x 1.99:1 0" Sp (converted to 70. F. and Sea Level)2. From performance tables, select fan to deliver required cfm at corrected Static pressure.Design tt BCS36S SWS|, Class lil-page 23-delivers . . ..26044 cfm at 10" Sp,34O0 fpm O.V., 1500 RpM and 49.7 BHp3, Operating speed remains constant, but divide-BHP to correct to actual operating conditions,49.7+1.99:24.97 BHP

Temperatrie/RPM CorrectionsMaximum allowable wheel speeds shown below each fan perform-ance table refer to fans of standard construction operating'at 70.F.Since the rupture and creep strength of steel decreses aipreciablywith increases in lemperature, maximum allowable speed!'must bcorrected accordingly.4. .Reduce maximum allowable fah speed by applying RpM correc-tion factor for temperature from Table 4.'Maximum speed for BCS365 SWSI, Class lll, Standard Dutv is1721 RPM (at 70"F.) Correction factor for 500.F. is 0.91. or-rected maximum speed is therefore 1721 x A.91:1566 RpM.5. Actual operating speed of selected fan must not exceed the cor-rected rnaximum allowable RPM.Since operating speed of 1500 RPM is less than 1566 RpMshown-BCS365 SWSI, Class lll Heat Fan is a correct selectionfor the exampe appticaton.Refer.lo page 3 for detailed Heat Fan information.

pressu re.EXAMPLE

Standard Applicalion25,000 cFM3" Static PressureStandard AirSea Level

Second alternative selection-pg. 24BCS402 SWSI, Ctass I25006 cfmB7B RPM 2693 fpm O.V.'16.60 BHPPENFORMANCETABLENOMENCLATURECFM-cubic feet per minutefprn-feet per minute O.V.--outlet velocity in fpmrpm-revolutions per minute BHP-brake horsepowerSP-static pressure(in inches of water gauge)CORftFCTION FACTORS'FOR ALTITUDE AND TEMPERATURE

. EXAMPLETcmperature & Altitude. Application, 26,000 CFM5.0" Staiic Pressure500"F. Temperalure' 2,500'. Elevation. TABLE 1 . . . PBESSUFE CORRECTION FACTORS Table Basis (Facror 1.00) Altitude --{'; Standard Air at 7O'F

AI,TTUD5IN FEE NI-ET TEMPRATURE IN DEGREES, FAHRENHEif120 40 rcl r80l?00 250 | 3001 3501 4o0l 15ol 5ool ssol ooo I so 700 750 800 i000 I 200 I 00 00 I 80002505907509195997

96979899

.98.991.00l.o I

't.oo1.0 I1.021.03

l.o4t.051.0l.o7l.o8t.09

1.09l. io1.1It.12l.t3l-l{l. 5I r

1.17t.t8l.r91.2 1

r.2 1.231.2 5

1-2 51.2 8't.29

1.31.35 1.43l -44l.a61.471.53.5-5 8

1.21-4l.5't 671.721-711.7 5l-v7

1.8 I1.831.851.8

1.901.921.941.9

2.002.O22.O12.06

2. lc2.122.'t12.1 2.262.282.302.332.35

2.382.ao2.432.t52.7 2.792.822.44

3. l33.r3.2C 3.553.5I1.623.893.933.97.0 I

4-2- 64.304.3 51-39IOO0150020002500

.98.ool.o?LO0't.02't.041.0

1.021.04t.01.081.041.08l. l0

1.0t.08t. lo1 t2l. lot. l2l. l4117

l. l3l.tLl81)Ol. t81.201.221.21

1.221.2 /.t.261.29

1.2 61.24t.3 r1.33.30.38

.39.12.15471.49

1571.591.62l.5

l.81-721.7 51.78

t.791.81.89

1.881.921.951.99

1.982.O t2.O52.49

2.082.122. l2.202.182.232-3 I 2.372 t1

2.122-162 512.482.522-57

2.872.932.983.01

3.23.323.3 83.53.7g3.8

4.O51-121.204-28

4.431.604.9300035004000,(500

.o7.09.ltl.o8'1.09l.l Il.t3

t. l01.12l. l4l1

l. l2l. tr. iI t8

t. l4:l.lt. 191.201. l91.23t.2 5

1.2 A1.26l.? 91.291.3 1r.3 3

1.3 l

l-38

L31.40

t.40l.31.15l.{8i._\ot.s31.58

l.0l.3l.l.9t.7 1l.7t1.771.8 r

1.8 Il.e 81.9 I

.93.9.oo.03.0.lo.14

13't72024

2.24 2.392-412.48

2.452.502.512.582.02.12.9

2.72.712.72.8 I

3.093. l5 3.5 I3.33.9

3.934.001.O74.31.4 4.774.8

4.9 45.0350005500000500ll820

l. t5l. l8't.20122

1.19'l-2'l1.24

.20a1

.271.2 5't.27Lo

1.271.301.33: _.5t-3 It3/1.338

1.3 1.39l. I| 14,4C.4/..149

.45

.9.5 1.54

.5C.54 t. I1.5r.81.7A

1.721.7 61.7 91.82

1. 8 4r.9 I1.9 a1.8 8

91.992.O

2.062.122. l52. l8 l.z o2.302.?82.34 2.402.16?.50 2.582.3

.3.9

.782.802.852.90

2.933-02

.a2.9I

3.3 3.393. 5351

3.73.853.9 I3.9I1.2 |4.324.39/..46

4.71.7I4.84.9 t1

5.1I5.215. I/ooo

7 500800085002429

1,2 41.27't.3011)1.2 1.30l.J1l_3

291.35LJ/

LJl

1.401.381.35 .40.13A5

1.4 il.4l -A7I 9

I.1.19t-J3I 55r.5 It.5l.0

.5.0.oJ.6l.5t.9 l8

1.77'l-8 I1.8{1.89t.93l9

1.972.02) 10

2.a92.11 2.322.36 2.112.442.39 .5 1

-o

2.542.42-702.7 1

2e87.842.892.9 6

2.943.0 I3.083t73.073.13.213.26

3.i3.61J-/ 33.781.Qt314.29

4.53,1.31.7 4,{ 8l

5.0:.:5. l:i5-?5

5.50:.2900095oO

1o000

't.34

1.401.371.401.43

1.,10l.31.1

t.431-161.49

1.48

I55t.531.5I 59

t.581-2t.5

l.1.7t.7 t

1.91.731.77

'1.7 9l -83

1.8 81.92I "9

2.002.042.O9

2.142.19 2.112.42.5 1

2.592.64

2.6 2.802.862.92

2.943.003.07

.07

.203. l93.26 3.333.40

3.173.83.954_03

4.3I1.48 {.9 I5.0?5.r2

5.455.55.8

5.96.09.22

Temp. F 70" 200" 300" 400"Factor 1.00 al .95 .94Temp. F- s00" 600" 700 800'Factor .91 .86 .82 .76Ternp. F. 900" i000" I 100" 1200"Factor Contact Local ILG Sales Office