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What is the function of back pressure valve in Boiler feed pump?
The function of back pressure valve is to prevent back flow to the pump in case there is an obstruction on downstream side of valve.
What is difference between radial flow turbine and axial flow turbine?
in a radial flow turbine the steam enters the turbine in the direction of its radius and leaves it in the direction of the axis of the shaft. in a axial flow turbine the steam enters the turbine in the direction of the axis of the shaft and leaves the turbine in the same direction.
What flow is equal to and opposite of electron flow?
The "flow of current" is considered to be in the opposite direction.
What is theFunction of arc valve in boiler feed pumps?
The ARC valve provides protection for centrifugal pumps during low flow conditions. It recirculates a minimum flow requirement automatically to the deaerator to prevent the pump from overheating and causing internal damage. Pump manufacturers will dictate a pump's minimum flow requirement. The ARC valve will be designed to flow normal capacities through the main valve and also size the bypass to handle the minimum flow. Additionally, the flow sensing element, a disc, also acts as a check valve to prevent reverse flow to the pump.
The expression alternating current refers to which form of energy?
Alternating current is a flow of electrical energy in which the direction of electron flow reverses periodically. The mains electricity in your house is likely Alternating Current. The other form is Direct Current, where the direction of electron flow is in one direction only. Such as the flow from the batteries in your flashlight.
What is the use of boilerfeed pump?
The boiler feed pump pumps hot feedwater into the boiler. The boiler pressure is to high for water to flow into it by gravity, so a pump is required.
What is the purpose of a diverter valve in a boiler system and how does it function to regulate the flow of water or steam?
The purpose of a diverter valve in a boiler system is to control the direction of water or steam flow. It functions by diverting the flow of water or steam to different parts of the system, allowing for regulation of temperature and pressure. This helps maintain efficient operation and prevent damage to the boiler.
High pressure steam boiler feed water p and id?
Usually high pressure boiler feed water is a 3 cell control using the drum level transmitters average, Steam flow Transmitter and feed water flow transmitter The drum level controller is tuned so that the drum level is around the half glass depending on load using the steam flow as a feed forward & drum level trim (lifting the drum level above SP under high load and lowering drum level under SP for low load)and the water flow to balance out with the steam flow (mind you if you blow down or have a tube leak the drum level will open the feed water control valve to maintain level) the main tuning in the P.I.D for this is Gain and integral not using derivative as it is too abrupt in its response obviously the actual full control schematics is a lot more complex than this
What is the function of back pressure valve in Boiler feed pump?
The function of back pressure valve is to prevent back flow to the pump in case there is an obstruction on downstream side of valve.
Are winds named for the direction they flow to or the direction they flow from?
Winds are named for the direction they flow from. For example, a northeast wind comes from the northeast direction.
What is the focus for a process improvement exercise on balancing?
Flow
Why boiler drum level control is 3 element control?
three element means 1) drum level transmitter. 2) main steam flow transmitter. 3) feed water flow transmitter . in squared root. we are controlling drum level by these 3 elements. output feed to 30% control valve. or control valve.
In which direction does the river shannon flow?
in which direction does the river Shannon flow?
What direction do fluids flow?
Downward, Downriver, Downhill, the direction gravity pulls everything.
What additional factor will be change if the direction of a current flow is change?
direction of magnetic field
What is the direction of current due to flow of electrons if it is not conventional current?
The direction of current due to flow of electrons is opposite to the direction of conventional current. This is because electrons have a negative charge, so when they flow in a wire, they are actually moving in the opposite direction to the current flow defined by convention.
Can you install a diode to allow 24 volts AC to flow in one direction but not allow the flow of 24 volts AC to flow in the opposite direction?
Diodes convert AC into DC by allowing current flow in one direction only. Since AC is alternating between plus and minus it is not possible to use a diode to allow AC to flow in one direction and not in the other direction.
