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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.
What are the differences between notch and orifice?
notch is the device used for the measurement of the rate of flow of liquids through small channels at tanks where as orifice is used to measure rate of flow through pipes
Applications of orifice meter in industries?
(to check the flow rate of water ... calculate the pressure drop
What is orifice in fluid mechanics?
An orifice in fluid mechanics is a small opening or hole through which fluid flows. It is typically used in devices such as nozzles, Venturi meters, and orifice plates to measure or control the flow rate of a fluid. The size and shape of the orifice affect the flow characteristics of the fluid passing through it.
Pipe that distributes gas to the burner through the orifice called?
A gas pipe distributes gas to the burner through the orifice, which is a small opening that controls the flow of gas. The gas flows through the orifice and is ignited by a flame, producing heat for cooking or heating purposes. It is important to ensure the orifice is clean and free of debris to maintain proper gas flow and combustion.
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.
How do you calculate the steam flow rate?
The steam flow rate can be calculated by dividing the mass flow rate of the steam by the specific volume of the steam at the given conditions. This can be determined using steam tables or steam property calculators. The formula to calculate steam flow rate is: Flow rate (lb/h) = Mass flow rate (lb/h) / Specific volume (ft^3/lb)
Why a reducing orifice in the steam supply line of such an evaporator?
A reducing orifice in the steam supply line of an evaporator is used to control the flow rate of steam entering the evaporator. This helps in maintaining the desired operating conditions and ensuring efficient heat transfer within the evaporator. Additionally, it can help prevent overheating and equipment damage by limiting the amount of steam entering the system.
How is resistance used in a space heater?
In an electrical space heater, electrical current dissipates energy into heat, and the heat radiates from the element. In a fuel powered space heater, an orifice throttles the fuel feed (resistance to flow), which controls the heating rate. In a steam powered space heater, an orifice throttles the steam (resistance to flow), which controls the heating rate.
What is the purpose of the vent and bleed hole in a orifice plate?
Bleed or Weep Holes are located at the elevational top or bottom of the Orifice Plate. The Weep Hole is tangent to a circle equal to 98% of the line I.D. DRAIN HOLES are located at the bottom of the Orifice Plate to prevent liquids in a gas or condensate in a steam flow from damming up behind the Orifice Plate. VENT HOLES are located at the top of the Orifice Plate to allow gases in a liquid flow to vent pass the Orifice Plate.
What type of orifice is used for gas-liquid mixture flow?
A conical orifice is typically used for gas-liquid mixture flow because it helps to separate the gas and liquid phases as they pass through. This design allows for more accurate flow measurement of both phases.
