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Affinity laws are the best equations to calculate and estimte the changes, however these are constant efficiency equations. But when there is a change in impellar size, efficiency does change and hence these equations may not predict the changes very accurately, however they definitely give a...

See the NPSH(A) calculation can be done by the following formula: in case the storage tank is open to atmosphere: NPSH(A) = P (atm)+ pressure due to height of liquid in storage tank - vapour pressure of the pumped liquid at working temeperature and pressure-pressure losses in the piping from...

see, only solution that comes to my mind is the affinity laws as stated earlier: the laws are as follows: at constant efficiency, and at constant rpm (N) Flow (Q) goes directly as impellar Diameter (D) Head (H) goes directly as square of impellar Diameter (D) BHP (P) goes directly as cube of...

will u explain what do u mean by flowability?

a needle valve may help as it has a very small aperture for flow outlet.

there is only one situation responsible for that and many reasons responsible for that situation: Ur pump is somehow not getting the fully developed desired flow, that is the suction of the pump is deprived of the fluid temporarly in a periodic manner. Reasons responsible for it: a) the fluid...

what is the question? what do u want the suggestions for?

your question is not understood. what do u mean to say "flow temperature drop and vaporise"? if the flow temperature drops, the vapors will condense. explain ur question.

Centrifugal pumps can be grouped into several types based on the compliance with industry standards. some of these groups alongwith governing standards are mentioned below: 1) ANSI Pump - ASME B 73.1 Specifications 2) API pump - API 610 Specifications 3) DIN pump - DIN 24256 Specifications 4)...

sump pumps are vertical turbine type centrifugal pumps, vortex pump as far as i can judge is centrifugal.

here is the most comprehensive reply: the conversion factors are given below: 1 m3/hr = 219.9692 gallon (UK)/ hr = 3.666153 gallon (UK)/ min = 0.0611025 gallon (UK)/ sec = 35195 ounce (UK)/ hr = 586.58 ounce (UK)/ min = 9.776407 ounce (UK)/ sec = 35.31 ft3/ hr = 0.5885778 ft3/ min = 0.00980963...

As the name suggests, flow meter is a flow measuring device used to meter or (commonly said) measure the flow. it gives the volumetric flow rate in a piping system. it can vary from a simple orifice plate to complex turbine meter where the flow rate is measured as per the rotation of the turbine...

i am in a petroleum industry and i design all my inhibitor injection system in the horizontal plane, that is, injection from the side in the same horizontal plane. depending upon the volume and pressure of injection, the injection piping size can be worked out. if injection piping is within...

you have to do it urself my dear,

i don't think calculation of the weight of any mitre bends is so difficult that we need a program for doing so. Step 1: calculate the total length of the bend using the formula, l=r x theta, where r=radius of the center line of the bend and theta = bend angle in radians. Step 2: Unit weight of...

the pressure due to 25 ft water colum can be calculated as follows: p=density x gravity x height = 10.8 psig ur observation of 18 psig is not understood. in case the tank is open at the top add the atmospheric pressure of 14 psi to it. so in case of open roof tank it will be 24-25 psig and in...

in our specifications we don't provide schedule, however we mention the dimensions as per ANSI B 16.11, but the pressure clas mentioned is 3000#. i will request you to check ur pressure class.

hi, the two valves have different construction and hence suggested for different applications. Globe valves are closing down valves in which the closure membrane is moved squarely on and off the seat. Globe valves are used in applications where a moderate control or regulation of flow and hence...

no such recommendations are made in the reference codes for piping hydrotesting, refer ASME 31.4 or API RP 1110. hence, it will be better to have the valves while hydrotesting.

as it can be seen from the equation above, it's very difficult to make either kinematic viscosity or temperature as the subject of formula and hence we don't have graphs directly plotting the kinamatic viscosity to the temperatures. the equation is very complex one and hence it's advised to make...