Recent content by gorkus

Then First I need to calculate the Torque: In order to get it I use the following formula. Shear stress = 16 *T/pi d^3 Where T = Torque kg*m= (225000/pi)*(Power( cv)/rpm)= rpm 1100 Power 12.7kw *1.36 = 17.272cv I get a Torque of 1124,55 kg*m Shear stress: 85% de tensile stress of F-1140 =...

But The viscosity of the fluid is 14 cSt @ 20 ºC?? So once I have the torque I'm going to this formula in order to get the shaft diameter. d= cubic rd [ (16*TORQUE)/(PI * MAXIMUM ALLOWED SHEAR STRESS OF F- 1140)] Is it ok??? maximum shear strees is 77.8 GPA??

Sorry the formula is d= cubic rt(16*M)/PI* maximu shera strees If if use this value, maximum shear strees , I work out the diameter of my shaft which is able to endure this torqued. Is it right??

I've calculate the torqued: M=225000/pi *N/n ( kg.m) Where: M= Torque kg*m N= Power Cv = 25 ( taking account the viscoity value ) n = rpm = 1100 So the Torqued value is: 1627.71 kg*m Then chosen material is Steel 1140 Where: d= cubit rt [16*M/maximum shear stress *( pi)2*N/n] But...

How can I get de diameter of the shaft that you need in this aplication: Speed 1100 rpm. Prssure 7 bar Flow 927 l/min

THIS FORMULA IS SUITABLE TO CALCULATE TEMPERATURE RISE IN POSITIVE DISPLACEMENT PUMPS.??

YOU MEAN CONVERT FROM KW TO JULIOS....??

I'd like to know if exist a formula to calculate the heat generated by a pump recirculating liquid in a short lenth of pipe. Flow: 15 m3/h Length pipe 7 m diameter: 2" Fluid: oil. Thank you very much.

Well so if try to do this job with a volumetric pump , I would have to set the pump internal safety valve 19 or 21.4 barg. Is it right? Diferencial pressure will be 19 or 21.4 barg , ok?? thank you very much.

sorry but is not possible 80 m of gasoil equual 2 bar.??

Operating conditions: product: gas oil Phase: Liquid Max Suction operating pressure: 2.4 bar G Average operating pressure. 6 to 7bar Max discharge pressure ( closed valve): 19 barG Characteristics: required total Dynamic head: 80 m What is the working pressure or differencial pressure ? 6...

THANK VERY MUCH.

Sorry By the lack of information. There is a mistake Is for a pump.But the flange is 4" DIN 2576 PN 10.Flow is 10 m3/h,maximum working pressure 10 bar.Working temperature 170ºC How can I get the vaue of the forces ( in 3 axes( xyz)). I think that the forces are caused by the weigth of the...

I need to know te maximun allowable forces a of 1 1/2" slip on flange 150 # astm a-105.

how can i get the amount of kva ( SIZE OF GENERATOR) to start a three electric motor of 4 kw.?? Kva = kw/ cos(fi) = 4 /0.85 = 4.70 kva is correct?? THANKS IN ADVANCE GORKUS