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TOTAL HEAD & CAVITATION CALCULATOR
METHODE : HANZEN WILLIAM (By : Budiman 0811999465-Grundfos), R7.Eng.March 09 HASIL
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Reference : Australian Pump manufacturer Association (APMA Limited 1982, Reprinted 1993) FLOW RATE (Q) : 4,0 m /jam
21/08/2019 10:50 TOTAL HEAD (H) : 22,7 mtr
Isi di kotak berwarna saja Ld, panjang pipa discharge : 5,0 mtr Tentukan data-pompa dari WinCaps
Vapour pressure-Hv = 0,24 mtr Ld -------------I
I----------------------------------------I Model/ Tipe pompa :
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Temperatur air = 20 C
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Debit pompa (Q) = 1,10 L/s Effisiensi pompa : 70,00 %
Negative suction, sumur dangkal, Hs < 8 mtr Hd, Discharge Head ..….. : 7,0 mtr
Sistem aplikasi, pilih 1-7 : 1 P2-Rated pwr di duty point : 0,3 kW
Hg.. Geodetic head-diatas G level : 12,0 mtr
Material pipa hisap, pilih 1-7 : 3 atau diatas level 0.0 mtr
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[3] Galvanized iron : 120 HWc* Pump-1
Panjang pipa hisap, Ls : 3,0 mtr Centrifugal pump Mat'l pipa discharge, pilih 1-7 : 6 NPSH available : 6,07 mtr
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Diameter pipa hisap, pilih 1-17 : 5 [6] Polyethilene Class-6 : 140 HWc* NPSH req'd : 3,20 mtr
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Dia. Nominal pipa hisap : 40,0 mm Ls : 3,0 Mtr Dia. pipa disch, pilih 1-17 : 5 NPSH avail > NPSH req'd
Diameter dalam pipa hisap : 41,9 mm G. Level I Dia. Nominal pipa discharge : 40,0 mm TIDAK TERJADI KAVITASI
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Input manual dia. dalam? (Y/T) : t 0.0 Mtr PUMP-1 Dia dalam pipa discharge : 35,2 mm
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Jika Y, Input dia. dalam pipa : 0 mm I--------------------- Input manual dia dalam?(Y/T) : t -Hs hisap dibwh G level. Max 5,87 mtr
Velocity (Ideal 0.9-2 m/sec) : 0,80 m/s Jika Y, Input diameter dalam : 0 mm
AWAS VELOCITY TERLALU RENDAH Hs 3,0 Mtr Velocity (Ideal 0.9-2 m/sec) : 1,13 m/s
Turunkan ukuran diameter pipa DIAMETER PIPA DIRECOMMENDED
Tinggi pipa hisap (Hs) : 3,0 mtr Negative suction, Turunkan ukuran diameter pipa
Hs : Level ground, 0.0 mtr ke level air ~~~ ~~~ Sumur dangkal < 8mtr Safety Factor (Pipe+Fitting) : 3 % PUMP-1 PUMP-2 PUMP-3
Juml. ball valve : 0 unit ~~~ ~~~~
Juml. butterfly valve : 1 unit ~~~ ~~~ Juml. ball valve : 0 unit
Juml. swing chek valve : 0 unit ~~~ ~~~ Juml. butterfly valve : 1 unit
Juml. elbow (90o) : 0 unit ~~ ~FV Foot Valve Juml. swing chek valve : 0 unit
Juml. Tee : 0 unit ~~~~~~~~~ Juml. elbow (90o) : 0 unit
Juml. foot valve : 1 unit Juml. Tee : 0 unit
Pressure Drop-1 : 0,0 mtr Pressure Drop-1 : 0,0 mtr
Pressure Drop-2 : 0,0 mtr Pressure Drop-2 : 0,0 mtr Head Loss-Suction Pipe : 2,56 Mtr/100
Note : Pressure Drop-3 : 0,0 mtr Head Loss-Discharge Pipe : 4,50 Mtr/100
*HWc : Hanzen William Constant Head Loss-Fitting : 0,37 Mtr
Water density 1000 kg/m3, viscosity 1cP ; Suhu normal air 20-30oC
Pressure drop : penurunan pressure karena Chiller, AHU, Filter, Strainner, Screen, Valve, dll
