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107V1= = =___L�q･F1･�n�1�P1PX�1-�n�1�Pm�PX�( P1 )(n)1�( q )･( F1 )･�( PX )1-�( Pm )( PX )(n)1�Accumulator Sizing Program for Pulsation Dampening Application※Note : In all calculations, the absolute pressure shall be used. (Abs. pressure = gage press + 0.1013 MPa.)Accumulator application(Name of System)Max. Operating Temperature℃Operating OilSuitable Bladder CompoundMin. Operating Temperature℃Date:THTLCustomer Name:AddressPump sortF1singlesingle0.60double0.25duplexsingle0.25double0.15triplexsingle0.13double0.06NIPPON ACCUMULATOR CO., LTD.TEL : 8154 (367) 1252 FAX : 8154 (367) 1951http://www.nacol.co.jp E-mail: sales@nacol.co.jpNIPPON ACCUMULATOR CO., LTD. Sales Department will be happy to review your Accumulator requirements with anyspecial Accumulator manufacturing codes or specifications.We will review your specific requirements in detail to provide you with the most suitable and economical Accumulator.Q'ty/- - - Fittings□ ()・□Flange()METI Japan・ASME・CE(Others )RemarksSelected Accumulator Item #Note:For pulsation dampening, please use an accumulator which maximum allowable working pressure is higher than the maximum pulsationpressure generated befor installing of an accumulator.Inspection certificaterequired by the customerReduceBushRegular circuit pressureMPa・abs.Maximum Pulsation Pressure Generated NowMPa・abs.Ph ≦Max. Allowable Working Pressure of AccumulatorMax. allowable pulsation pressureMPa・abs.Pm = PX+ αGas charging pressureMPa・abs.P1= PX×0.6 (at ℃)Polytropic exponent-Discharging volume of pumpL/minPump sortRevolution of pumprpmDischarging volume of pump per one revolutionL/revq = Q ÷NDischarge coefficient of pumpAccumulator capacityLGiven from the following formula.PxPhPmP1nQNqF1V1Piston (Simplex, Duplex, or more),(single, double) acting{□Vane□Gear□Others ( )See the table below (When pump is larger than triplex, vaneor gear pump, F1 should be 0.06)Customer's specificationIntersectional point from Px and T <15 given by the table of N2gaspolytropic exponents. (see page 103)

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