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If the flow through a orifice doubles the differential pressure does what?
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Is there an equation that addresses how pressure psi affects flow cfm through a fixed orifice?
yes, the pressure is directly related to the effective force acting on the fluid body, so from the pressure differential you can compute the effective force on a small mass of fluid in the orifice, which can then be translated into a flux integral, which can be solved for Volume/time.
What is mean slippage in hydraulic pump?
Slippage is oil leaking from a pressure outlet to a low-pressure area or back to an inlet. A drain passage allows leaking oil to return to an inlet or a reservoir. Some slippage is designed into pumps for lubrication purposes. Slippage will increase with pressure and as a pump begins to wear. Oil flow through a given orifice size depends on the pressure drip. An internal leakage path is the same as an orifice. Therefore, if pressure increases, more flow will occur through a leakage path and less from an outlet port. Any increase in slippage is a loss of efficiency.
What is the rotameter orificemeter venturi meter pitiot tube i want to question related to these and answers?
AnswerThese are used to measure flow rate.Orifice PlateWith an orifice plate, the fluid flow is measured through the difference in pressure from the upstream side to the downstream side of a partially obstructed pipe. The plate obstructing the flow offers a precisely measured obstruction that narrows the pipe and forces the flowing fluid to constrict.The orifice plates are simple, cheap and can be delivered for almost any application in any material.The TurnDown Rate for orifice plates are less than 5:1. Their accuracy are poor at low flow rates. A high accuracy depend on an orifice plate in good shape, with a sharp edge to the upstream side. Wear reduces the accurVenturi TubeDue to simplicity and dependability, the Venturi tube flowmeter is often used in applications where it's necessary with higher TurnDown Rates, or lower pressure drops, than the orifice plate can provide.In the Venturi Tube the fluid flowrate is measured by reducing the cross sectional flow area in the flow path, generating a pressure difference. After the constricted area, the fluid is passes through a pressure recovery exit section, where up to 80% of the differential pressure generated at the constricted area, is recovered.With proper instrumentation and flow calibrating, the Venturi Tube flowrate can be reduced to about 10% of its full scale range with proper accuracy. This provides a TurnDown Rate 10:1.Variable Area Flowmeter or RotameterThe rotameter consists of a vertically oriented glass (or plastic) tube with a larger end at the top, and a metering float which is free to move within the tube. Fluid flow causes the float to rise in the tube as the upward pressure differential and buoyancy of the fluid overcome the effect of gravity.The float rises until the annular area between the float and tube increases sufficiently to allow a state of dynamic equilibrium between the upward differential pressure and buoyancy factors, and downward gravity factors.The height of the float is an indication of the flow rate. The tube can be calibrated and graduated in appropriate flow units.The rotameter meter typically have a TurnDown Ratio up to 12:1. The accuracy may be as good as 1% of full scale rating.Magnetic floats can be used for alarm and signal transmission functions.Pitot TubesThe pitot tube are one the most used (and cheapest) ways to measure fluid flow, especially in air applications as ventilation and HVAC systems, even used in airplanes for the speed measurent.The pitot tube measures the fluid flow velocity by converting the kinetic energy of the flow into potential energy.The use of the pitot tube is restricted to point measuring. With the "annubar", or multi-orifice pitot probe, the dynamic pressure can be measured across the velocity profile, and the annubar obtains an averaging effect.
What is wrong with the statement Voltage flows through a circuit?
Voltage is the force that causes current to flow through a circuit. In a similar way it isn't pressure that flows through a pipe - it is the fluid flowing through a pipe due to a difference in pressure at the entry and exit of the pipe that causes the fluid to flow through, no pressure flowing through a pipe.
What pressure or force that causes current flow through a conductor is caleed?
The pressure or force causing current to flow through a conductor is called voltage.
Why is the orifice plate called a variable head flow meter?
Because it relies on the back pressure through a known orifice which its differential pressure across the plate relates to flow.
Is there an equation that addresses how pressure psi affects flow cfm through a fixed orifice?
yes, the pressure is directly related to the effective force acting on the fluid body, so from the pressure differential you can compute the effective force on a small mass of fluid in the orifice, which can then be translated into a flux integral, which can be solved for Volume/time.
Difference between an orifice plate and a restriction orifice?
An orifice plate is a plat eused to measure flow. Pressure sensors are placed upstream and downstream of the the plate and hepressure differential is used with Bernoullis Equation t compute flow (including some experimental factors). A retriction plate is similar to an orifice plate but is much thicker. It is used to drop pressure upstream of a system. The convergence, throttlnig through thick section and divergece works the fluid and reduces total energy (transformed in firction, heat etc). This leads to an overall pressure reduction.
What is the difference between Restriction Orifice and Flow orifice or please explain the symbols RO Restriction orifice and FO Flow Orifice?
A restriction orifice (RO) is used to limit the flow through the pipe to a set flow by choking the flow at its sonic velocity. A flow orifice (FO) is usually used to determine the flow through the pipe from the pressure drop over the plate. There a normally two pressure taps (one on each side of the plate) and a pressure transmitter which determines the pressure drop over the plate. A formula is then used to convert this pressure drop to a flowrate for the specific fluid passing through the orifice. A FO usually has a temperature element to determine the gas temperature for use is the formula.
What is orifice meter?
Orifice meter is a flow measuring device used for calculating the pressure drop,flow rate and behaviour of the fluid moving through the pipe.
Difference between pressure regulating valve and differential pressure valve?
Pressure Differential Valve- maintains a constant Differential pressure across it. Say if P1 was inlet pressure and P2 was outlet pressure PDV will try to keep constant DP. Say if P2 increases due to some reason and P1 is constant the DP will decrease and will decrease flow through the PDV. At this point to maintain the constant DP PDV will open and allow more flow through to keep the flow constant and thus DP constant.
What holds the airplane in space?
Well the plane is flying through the air not through space. It is the pressure differential on the airfoils that make the plane move through the air.
What is orifice?
An orifice is an opening (as a vent, mouth, or hole) through which something may pass.
How much pressure does it take to get eight gallons per minute through a three eights inch diameter orifice?
It would take approximately 2 + 2= poo
What keeps the high pressure from the low pressure in a 1993 Chevy lumina car When I charge my system and the compressor stops the pressure in the suction line builds back up to 100 plus psi.?
When the system is off the pressure will equalize through the orifice tube and the compressor. It's normal operation.
What is mean slippage in hydraulic pump?
Slippage is oil leaking from a pressure outlet to a low-pressure area or back to an inlet. A drain passage allows leaking oil to return to an inlet or a reservoir. Some slippage is designed into pumps for lubrication purposes. Slippage will increase with pressure and as a pump begins to wear. Oil flow through a given orifice size depends on the pressure drip. An internal leakage path is the same as an orifice. Therefore, if pressure increases, more flow will occur through a leakage path and less from an outlet port. Any increase in slippage is a loss of efficiency.
What does the mouthpiece do?
the discharge through orifice can be increased by fitting a mouthpiece.
