Answer / k r kumar ranjan

Normally In Coal based thermal power plant(Either Sub or Super Critical) 60% Bypass is adopted based on condenser heat load calculation keeping 0.9 as Condenser Cleanliness Factor.
If Some designer wants to bypass 100% of generated steam, it is also possible. In fact most Nuclear Steam Turbine adopt same for same reactor shutdown process.
Increase in % capacity of bypass system increases capital cost involved in condenser cooling surface, Extraction pumps, LP Heaters, Pipe Sizing etc.

why high pressure heater will take after sufficient pressure? what happen when high pressure heater will take from COLD REHEAT line at light up time when hp and lp by pass in service.(means can we heater take at low pressure?)

2 Answers  

---

In one plant id fan and fd fan are used for boiler. boiler is used to heat water after some days they install one tank to heat water by hot flue gases coming out from boiler and then hot flue gases are used to heat the air coming from fd fan before leaving out from chimney . but hot flue gases are not coming out from id fan what might be the reason?

3 Answers   TATA,

---

How We Calibrate the vaccum transmitter?

0 Answers  

---

Our 8mw steam turbine (condensing cum extraction) exhaust steam temperature is high even after taken it in hogger why

1 Answers   Bombay Rayon Fashions,

---

What are the motors used in a thermal power plant? (With type and ht/lt) What voltage levels are used in a thermal power plant?

2 Answers   OPG,

---

---

why we use reduction gear box to reduce turbine high rpm to 1500 rpm in small plant

3 Answers   Maruti Suzuki, Sail,

---

what is scanner air fan & how dose it work & is there any interlock in power plant

3 Answers   APGenco,

---

In turbine. why they not use 320 oil?

1 Answers  

---

What is difference between Actual Drum Level and Compensated Drum Level?

2 Answers   DVC,

---

what is the real reason than natural draught cooling towers are always in hyperbolic shape

2 Answers  

---

what are the major duties of a instrumentation engineer in a power plant.?

3 Answers   Gulf,

---

What vibration parameters are monitored in a directly coupled single cylinder turbine and generator?

1 Answers  

---