2007-08-31 23:26:19 · 6 answers · asked by gattu 1 in Science & Mathematics ➔ Engineering
njgfdtbvt hiiy
2007-09-02 23:01:38 · update #1
njgfdtbvt hiiy
2007-09-02 23:01:40 · update #2
Submergence is defined by each pump manufacturer. It is usually the vertical distance from the surface of the liquid to the impeller eye or some point at the bottom of the pump.
Maintaining the recommended minimum submergence ensures that there is enough NPSHa, and prevents vortexing and air ingestion.
2007-09-02 21:48:48 · answer #1 · answered by hpfgirl 2 · 1⤊ 0⤋
Submergence Definition
2016-09-29 11:14:57 · answer #2 · answered by ? 4 · 0⤊ 0⤋
'Submergence' is a term used in Oil Production.
The difference in the static head between the pump depth and the fluid level above the pump. The pump submergence is continuously monitored to adjust the pump flow rate and avoid a 'pump-off' condition...i.e. A situation caused by a low pump submergence into the fluid column.
A pump-off condition will increase the air or gas intake to the pump (low suction head), thus reducing the pump efficiency and causing cavitation.
2007-09-01 09:19:53 · answer #3 · answered by Norrie 7 · 0⤊ 1⤋
well, a centrifugal pump is one that can be completely immersed in water.
Well centrifugal pumps have a serious disadvantage ie., they have to be filled up to the eye of the impeller in order for them to take suction, so they will work well under the water. If they are placed on the surface of the water they will need priming, hence for intensive applications like very deep borewells,, takns in large ships , when there is a need to pump large volume of liquid at relatively low pressure use submersible centrifugal pumps.
tp my knowledge all of the submissible pumps are vertical.
2007-09-01 00:31:52 · answer #4 · answered by cool 2 · 0⤊ 1⤋
Not an expression that I am familiar with, but I would say that it applies to a pump that can be placed underwater when in use. No generally used on permanent installations in industry, although there are exceptions. A garden pond pump would be a typical example.
2007-08-31 23:31:38 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I think you're talking about a
'submersible vertical pump`.
The kind commonly used for water wells.
The shape allows the pump to be suspended
in the well casing by its outflow line and cables.
"Submergence" might refer to the depth below
water level though I haven't heard it used quite
that way.
2007-09-01 06:23:32 · answer #6 · answered by Irv S 7 · 0⤊ 1⤋