You must mean "why can i model a boiler and pump" as an electrical circuit. The answer is "elecrical components can be arranged to correspond to a useful mathematical model for the boiler and pump."
The sizing of the circuit breaker and hence the wire size to feed the pump are all dependant upon the amperage of the pump. This question can not be answered without that information.
How is the central heating model not like an electric circuit?
Depends entirely on the voltage and current rating of your pump.
how its the same
Yes. Check local electric codes to see if a disconnect is required at the sump pump. One way is to wire a single 15A circuit to an outlet for sump pump. Then the disconnect is just to unplug the pump for service.
think of a circuit with a cell , wires and a bulb. now think about a boiler and pump, pipes and a radiator. the cell is like the boiler and pump because it has the energy. the pipes are like the wires because they transfer the energy. the bulb is like the radiator because they use the energy changing it into light energy and heat energy when referring to them especially.
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.
pump fluid
externally fired
A digester feed pump forces water to a boiler. It works by transferring cool water to the boiler to be heated.
it is 500N
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.
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
Pump efficiency can not be taken as given.
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
TDBFP = Turbine Driven Boiler Feed 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.