Search results for query: *

what velocity limits would you say we should keep within on the our pump test rig pump discharge pipe side. would a max limit of 5 meters/sec be too high or the rule of thumb is about 3.5 m/s avoiding the unwanted tuirbulence, noise, high friction, cavitation.

Correct Littleinch... we have a VSD and can run the pump at a lower speed. we can't run the pump at its service speed of 1450 rpm on our pump test rig because it is not big enough to handle the high flow. but as you had mentioned best to test it on a pump test rig so we will probably...

sound advise...yes its unlikely customer will accept a pump performance tested at a lower speed.

Pump gurus Can the affinity laws be applied to a pump performance test to ISO 9906. We have a workshop pump test rig and want to test a water centrifugal pump at 100 l/s at 35 meters head. However our test rig can only handle 50 l/s so, is it acceptable to test it at 50 l/s and apply the...

Hi all i have a self-priming diaphragm pump which is installed 4 meters above the water level pls refer attached image... the pump's suction is 2" and is connected directly into a DN 150 pipe. the DN 150 pipe drops vertically and runs about 14 meters at a slight angle into the water. anyone...

ok TugboatEng... thanks for the lead these pumps from Gilkes seem to be for marine or boat applications. flows are not very large. do they make larger flow pump sizes for industrial applications.

Which pump companies(s) have these "liquid ring vacuum pump paired with a straight centrifugal pump"... no luck with google no results.

Hi pumping gurus no luck with trying to source this type of pump... has anyone come across this type of self-priming centrifugal pump. it has a main impeller & a second impeller which does the priming. video is attached of the pump...

thanks Latexman... yes, the U overall heat transfer coefficient takes into account the combined conduction & convection looking at the overall heat transfer coefficient formula in my book), so it takes into account the mixing or non mixing inside the tank. i used the 500 W/m2C from an internet...

thanks Latexman for Perry's reference... Perry's formula (shown below) for coil in tank isothermal heating medium is the formula i need, however it is for an agitated tank, how do you adjust the formula for a tank that is not agitated... that is with my tank batch heating application, there is...

hi i'm batch heating a tank containing water and need to raise the water temp in the tank from 20degC to 60degC in 1 hour. the tank water contents are not agitated. i'm using an internal coil in the tank as the heat exchanger. the hot water entering is about 1.1 liters/sec at 80degC and...

Hi heat transfer gurus i want to heat water in a tank with a helical tube coil... what calculatins are required. the tank water volume of 1500 liters is at 20 degC and is to be raised or heated up to 60 degC. i want to heat all the water in 1 hour. boiler water at 80 degC at 1 liter/sec will...

Hello heat transfer gurus i need to calculate the surface area of the U tube bundle heat exchanger to heat the water inside a water tank . the U tube bundle is a removable type, you install it by sliding the U tube bundle into the side of the water tank and bolting it on. hot water enters the...