Sheet1 (2)Contoh Perhitungan Volume Pressure Tank Booster Pump UN Type

Pompa Booster UN3M 80 x65 FS2HA 11 kWDengan spek : 3X1000 Liter/min X 43 mH X 2900 RPM

Setting parameter sbb :Shut off PMAX = 57 mSet Pressure = 43 mPstart = 36.5 m ( 15% Pset)Pstop = 39.5 ( Pstart + 3)Maka Volume pressure Tank adalah :=jadi, selection of tank volume = 60 liter ( produck tank volume)Ket :Qplan(l/min) : planned pump discharge flow rate ( per pump)Tstart(sec) : pump starting timefrom pump re-starts during until pump reaches declared speed.Wstart(liter) : minimum of saved water volume in tank.This compensates pump discharge of water, from pump re-starts during until pump reaches declared speed.Tstop(sec) : shortest pump stop duration time for prevention of pump inching.Wstop(liter) : saved water volume in tank.This compensates pump discharge of water, during pump stop time.Wtotal(liter) : total water volume in tank.Ptd(mAq) : standart atmospheric pressure, Pstd = 1.034Vtank0 : necessary tank volumeVtank : product tank volume.Vtank> Vtank0

Sheet1Contoh Perhitungan Volume Pressure Tank Booster Pump UN Type

Pompa Booster UN3M 80 x65 FS2HA 11 kWDengan spek : 3X1000 Liter/min X 43 mH X 2900 RPM

Setting parameter sbb :Shut off PMAX = 57 mSet Pressure = 43 mPstart = 36.5 m ( 15% Pset)Pstop = 39.5 ( Pstart + 3)Maka Volume pressure Tank adalah :=jadi, selection of tank volume = 60 liter ( produck tank volume)=No.PompaStdt Press. Tank(Liter)Capacity(Liter) Shut Off Pressure(m)Set Pressure(m)Pump Starting Pressure(Pstart)mPump Stoping Pressure(Pstop)mQplan(Liter/min)Tstart(1~2)secWstart(liter)Tstop(sec)Wstop(=1)literWtotal(Liter)Pstd(=1.034)mPstart(m)Pstop(m)Vtank0(Liter)Vtank Selection(liter)Pfill(m)180 x 65 FS2HA601000574336.5539.551000116.6666666667-117.66666666671.03436.5539.5530.19466666676015.8046145015234Ket :Qplan(l/min) : planned pump discharge flow rate ( per pump)Tstart(sec) : pump starting timefrom pump re-starts during until pump reaches declared speed.Wstart(liter) : minimum of saved water volume in tank.This compensates pump discharge of water, from pump re-starts during until pump reaches declared speed.Tstop(sec) : shortest pump stop duration time for prevention of pump inching.Wstop(liter) : saved water volume in tank.This compensates pump discharge of water, during pump stop time.Wtotal(liter) : total water volume in tank.Ptd(mAq) : standart atmospheric pressure, Pstd = 1.034Vtank0 : necessary tank volumeVtank : product tank volume.Vtank> Vtank0

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Sheet3Fungsi Membran Tankadmin15/07/2014Fungsi Membran Tank2014-10-22T08:01:46+00:00UncategorizedMembran pressure tankadalah tangki air tekan yang dilengkapi membran didalamnya. Tangki ini dipasang pada jalur pemipaan pada pompa tekan. Biasanya digunakan pada sistem pengoperasian otomatis dengan menggunakanpressure switch.

CARA KERJA MEMBRAN PRESSURE TANK

Sebagai contoh pressure switch di setting pada 2 bar pompa on dan 4 bar pompa off.

Kondisi A

Pompa air pada kondisi belum di hidupkan, tekanan air di dalam pemipaan masih 0 bar. Tekanan udara didalam tangki sudah ada dari pabriknya. Tekanan udara di dalam tanki akan menekan membran ( baloon ) hingga kempis.

Kondisi B

Pompa sudah mulai hidup dan tekanan air mulai menekan membran, sehingga membran akan membesar dan udara di dalam tanki akan tertekan dan tekanannya akan ikut naik. Apabila tidak ada keran yang dibuka maka tekanan air akan terus naik.

Kondisi C

Pompa terus menekan air di dalam membran hingga maksimal 4 bar dan pompa akan off. Udara di dalam tanki juga akan tertekan naik menjadi 4 bar.

Kondisi D

Setelah pada kondisi C pompa dalam kondisi off, kemudian ada keran yang dibuka sehingga tekanan air akan turun menjadi 3 bar dan seterusnya. Udara bertekanan yang ada didalam tanki akan menekan air keluar dari tanki hingga tekanan terendah mencapai 2 bar. Setelah tekanan air mencapai 2 bar maka pressure switch akan menghidupkan pompa. Tekanan air akan mulai naik lagi hingga mencapai 4 bar lalu pompa akan stop. Begitulah seterusnya air dan udara di dalam tanki saling menekan.

PEMASANGAN PADA JALUR PEMIPAAN

Pada waktu tekanan air di dalam plumbing dan tanki turun mencapai 2 bar, maka pompa pendorong akan hidup dan menaikan tekanan di dalam pipa. Selain menaikan tekanan ke dalam pipa pompa juga menaikan tekanan ke dalam tanki. Dengan dipasangnya membran tank ini pompa akan menaikan tekanan secara perlahan untuk mencapai tekanan 4 bar. Setelah tekanan mencapai 4 bar maka pompa akan off.

Apabila ada keran yang dibuka, maka tekanan air di dalam pipa akan turun. Tekanan air didalam pipa akan turun perlahan, hal ini disebabkan ada cadangan tekanan di dalam tangki, yang turut menekan air kedalam pipa. Setelah tekanan di dalam pipa dan tanki mencapai 2 bar maka pompa akan hidup, menaikan tekanan ke dalam pipa dan tanki, dan begitu seterusnya.

Kesimpulannya apabila dipasang membran tank, maka interval pompa mati dan hidup cukup lama. Lama mati dan hidupnya pompa tergantung berapa besar volume tanki yang dipasang. Dengan mati dan hidup pompa yang cukup lama, maka grafik turun naiknya tekanan air didalam pipa akan cukup landai, sehingga tekanan air yang dirasakan pada keran akan lebih stabil.

Hal ini sangat berbeda sekali apabila tidak dipasang membran tank, pompa akan mati dan hidup cepat sekali. Garfik fluktuasi tekanan air didalam pipa akan sangat curam, sehingga fluktuasi tekanan air pada keran-keran akan sangat terasa.

Contoh yang paling sering ditemukan pada pompa rumah tangga adalah apabila membran tank warna merah telah rusak sehingga penuh dengan air apabila diketok ( biasa dipasang di atas pompa). Pompa akan mati dan hidup sangat cepat sekali. Apabila pompa mati hidupnya cepat maka konsumsi listrik juga akan melonjak.

Ada sebagian orang bertanya Apakah pressure tank atau tanki tekan dapat menambah tekanan air atau tekanan pompa. Jawabannyatidak, pressure tank hanya berfungsi sebagai cadangan tekanan yang membuat fluktuasi tekanan di dalam pipa lebih landai grafiknya.

Contoh aplikasi membran tank yang dipasang padabooster pump set

Sheet4Kapasitas pressure tank pada system plambing ini dihitung berdasarkan aliran dari pada pompa plambing waktu start stop ( On/Off) pompa, maka kapasitas pressure tank adalah:

V= Qm /Z x Pa/(Pa-Pe) x 0.3

Dimana

Qm= Laju aliran / kapasitas pompa ( m3/jam )

Pa= Tekanan pada saat pompa mati / Off

Pe= Tekanan pada saat pompa hidup / On

Z= Frekwensi pompa On/Off

Laju aliran rata rata dari pompa adalah

Qm=Qp/2 (m3/jam)

Qm=45 m3/jam / 2

=22,5 m3/jam

Maka kapasitas atau volume dari pressure tank adalah :

V=22.5 m3/jam / 8 x 60 m / (60m - 10m) x 0.3

= 5,04 m3~5 m3

= 5000 Liter

Sheet5How to Size a Pressure TankNot interested in doing all the math below? Enter your values here to calculate.

Enter your pump output, desired runtime, and pressure switch settings to find the proper size tank.Pump Output in GPM* RecommendedMinimumRuntime:Desired Runtime * Up to 3/4 HP - 1 MinutePressure SwitchCut InPSI 1 to 2 HP - 2 MinutesPressure SwitchCut OutPSI 2 HP and up - 3 Minutes

Since it's inception in 1964, the pre-pressurized potable water tank has assumed various designs and has proven useful in a wide variety of open-system applications. Originally used in well installations, this technology gained widespread acceptance and was soon applied in a variety of applications requiring pressurized water storage. With this flexibility, however, can come confusion as to installation scenarios and related sizing. Below, we'll take a look at proper use and related sizing techniques in such applications as pump cycle control, volume maintenance, and water treatment systems.Common to the below examples is the fact that it is necessary to determine both the amount of tank storage needed and the pressures necessary to obtain that storage. Simply stated: All sizings use the same principle with different values. Referred to as Boyle's Law of Ideal Gases, this principle will be used to determine how much water is stored in tank at a given pressure. This multiplier will be referred to as theAcceptance Factor. Keep this equation in mind as a foundation to size any pre-pressurized tank:

Pump SystemsIt is common knowledge in the water systems industry that cycling a pump motor rapidly will often lead to failure. To prevent this, most pump manufacturers normally recommend a minimum pump runtime of 2 minutes. In order to achieve the runtime, the pre-pressurized tank must store a given volume of water between pump cycles. Doing so requires the pump to run for a specific period to fill the tank. In general, larger pumps require longer intervals between start cycles. When sizing a pre-pressurized tank for the above purpose, the following information should be known: Pump horsepower, pump output in gallons per minute (GPM), and pressure switch setting in psi (cut-in & cut-out). The below procedure will guide you through a sizing scenario using a 1hp pump. The pump will be operating at 15 GPM with a pressure switch setting of 40psi cut-in and 60psi cut-out. The Acceptance Factors have already been calculated in the chart provided. The figures are based on a tank precharge (initial air charge) set 2psi below pump cut-in pressure.

According to the "Recommended Minimum Runtime" notation, a 1hp pump should operate for a period of at least 2 minutes between motor starts. In order to run a 15GPM pump for 2 minutes, 30 gallons of storage is necessary. The Acceptance Factor indicates that 27% of a given tank's volume will be usable water between 40 and 60psi. Dividing 30 by an acceptance factor of .27 results in a tank with a volume of 111 gallons.

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CDL,CHL BOOSTER PUMP WATER SUPPLY SYSTEM - General DataSummarizeAs advanced water supply equipment, The Pump

Adjust rotate speed of the pump speed to keep

pipes pressure in constant, when the pressurewhich in the outlet of the pump be examined lowerthan the minimum figure of starting the pump,The pump can adjust the pump'rotate speedautomatically to keep the outlet pressure constant.When the pump reach working rotary speed,but the pressure do not get the fixed pressure,the system start P2,P3 stage pumps; with the mountof supplying water reducing, the pressure of export rise,the rotate speed of the pumps drop down slowly,if the rotary speed of the pump drop down theminimum fixed by the system, the system will stopoperating in order:P3,P2,P1.

System comprises more than 2 pumps in paralleland is combined with the latest technology PIDcontrol panel, thereby supplying water with constantpressure. Generally, The type of booster system isdivided into step control type using pressure switchand variable speed control type using Variable FrequencyConverter, Especially, variable speed control type isrecommended in that it keeps the water pressure constantlyby controlling the RPM of pump motor. We have developed thekey components for booster system,such as variable frequencydrive and PID controller using the latest technology.

Applications1. Water supply systems : High Building, Community,Villa2. Irrigation systems: Gardon, Carnie, Park, Farm3. Commercial Building: Hotel,Office, Marketplace,Large-sauna4. Industrial plants: Factory,Grocery industry,Washing device,Making product5.Public location: Hospital, School, palaestra,Golf court,aerodrome.

Benefits of Booster Pump System1.Solving the lower water pressure questionThe Booster Pump System makes the pressure of the allbuilding's water constant pressure.2.Avoiding the water solution in using water tank on the roofTaking the place of supplying water by the water tank on theroof, concelling solution from water stream3.Saving construction cost, adding spaceCancelling the traditional water tank, reducing the pressure to theconstruction, simple structure, reducing cost4.Saving energy, reducing area of holdingReducing electric energy 30% at least, the booster pump systemholds small area, install easily, shorten period of constructing

The characteristic of control method

Mobile variable Speed Booster System Controller exclusive invent in the world.-The initial of the world: variable speed booster system is lesser 3%-7% than them that invent before in savingelectric energy.-he product especially applies to high-power,the flux change large, location start frequently,the system operate highefficiency,saving electric energy evidently1.The transducer control moving methodThe one transducer be equal to some transducers ,not only saving energy but floppy restarting the pumpsThe current intensity when assistant pump starts is 200%-300%compare to the fixed current intensity

2. The method of variable frequency controller be fixed one pumpThe variable frequency controller fixed into one pump, as the assistant pump start, the starting current willover high and the pressure fluctuate rapidly , the current intensity of assistant pump starting is about 500%~600%to the fixed value.

The difference between the transducer control

moving method and altermate operation methodAltermate operation is the basis function of variable speedBooster System. The pump starts initially and operates intransduction after all pumps stop then restart, The pump isthe prime pump. Every time starts or alternate starts theprime pump in the random fixed time to preventing somepump start too frequent.

The curves which examine the system operating controlled by the transducer(60HZ)Keeping constant pressure even if the flux change overly when IQ controller be used.it is easy to learn the systemhave excellent performance in supplying water for the best conditionPerformance test: variable speed PIDcontrolled booster systemModels: 3DRL8-60 Date:2006-01-10Capability:200LPMx68x3STAGES The pressure tank capability: 100L Time: 09:56:04Method of control:control in variable frequency andconstant pressureStarting method:immediacy Examination time:8 minuteThe curses which the variable speed PID controlled booster system be examined