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A recirculation line in a boiler feed pump is used to return part of the pumped water back to the inlet of the pump. This helps to prevent cavitation and maintain a steady flow of water through the pump.
Cavitation is a phenomenon that can occur in pumps when the pressure of the water being pumped drops below the vapor pressure of the water. When this happens, bubbles of vapor can form in the pump, which can cause damage to the pump and reduce its efficiency.
The recirculation line helps to prevent cavitation by returning part of the water that has been pumped back to the inlet of the pump. This increases the pressure of the water at the inlet, which helps to prevent the formation of vapor bubbles. As a result, the pump can operate more efficiently and reliably.
Overall, the use of a recirculation line in a boiler feed pump helps to prevent cavitation and maintain a steady flow of water through the pump. This can improve the performance and reliability of the pump.
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What is the Use of Balance leak off line in Boiler feed pump?
avoid thrust
How do you calculate Boiler feed pump efficiency?
Pump efficiency can not be taken as given.
What type of feed pump are used in steam turbines?
Actually feed pump in the boiler is used to send water inboiler that is converted into steam whose kinetic energyis used to produce electricity. This pump can be driven byelectricity or steam from Turbine. In steam driven pumps, steam from tubine is bledand used to drive the impeller of pumpand send water in boiler.
How do you understand whether circulating pump is circulating water through economizer?
By measuring outlet temperature of water at downstream of pump and upstream of boiler.
What is a donkey pump?
A donkey pump is a supplementary pump which is brought on line if needed.
What is the Use of Balancing line in Boiler feed pump?
Boiler feed pump's suction pressure be aprox. 15Kg/cm2 and discharge pressure be 180Kg/cm2. So the balancing line balance the pressure and protect the boiler feed pump. my quastion is that what is the working principal of balancing leak off
In boiler feed water line whether a non return valve should precede or succeed the delivery valve of feed water pump?
In boiler feed water line the NRV is normally installed between Pump and stop valve if the line is short and an another NRV is installed at boiler entrance and after stop valve if the line is long or pump is 10 to 15 m away from the boiler.
What is the Use of Balance leak off line in Boiler feed pump?
avoid thrust
Why is used the balancing line in boiler feed pump and its direction of flow?
In boiler feed pumps usually the discharge pressure is 20 to 30 times tie suction Pressure so to protect the pump balancing line is given from discharge to suction.
What is digester feed pump?
A digester feed pump forces water to a boiler. It works by transferring cool water to the boiler to be heated.
What is float in boiler feed pump?
it is 500N
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 boiler feed water pump?
Boiler feed pumps are an important part of any boiler operation. They control the amount of water fed to the boiler and the manner in which it is fed.
What is Boiler feed pump?
Function - It adds the pressure to the feed water before it entyers into boiler feed pump suction Advantage - Ensures high margin NPSH A for boiler feed pump spinning at high rpm (5250Rpm) Drive for booster - Normally @1450 rpm Type of impeller- Mostly preferred Double suction
What is TDBFP?
TDBFP = Turbine Driven Boiler Feed Pump
How do you calculate Boiler feed pump efficiency?
Pump efficiency can not be taken as given.
Purpose of minimum flow line for centrifugal pump?
Low flow can cause overheating, hydraulic instabilities (suction and discharge recirculation) and mechanical unreliability in centrifugal pumps. To prevent such problems, options include both continuous and automatic (active) low-flow protection systems. Figure 1 shows four major types of configurations that provide recirculation back to an upstream feed vessel. Alternatives include recirculation to the pump suction piping.
