Answer / y v subba rao

The specific volume of steam coming out of ip turbine is very high. We can not accommodate re-heater in boiler which can handle such high volume steam. Design such type of boiler is very difficult and un economical. More over increase temperature of low pressure steam will not yield any additional benefit. However we have to reduce the temperature to 45 degrees before leaving to condenser. It is very difficult if we use re heater after ip turbine.

Answer / chinmay kumar patra(npti)

If we use re heater after IP than we can increase temperature not pressure so high enthalpy steam will not able to glide through turbine and it needs very bigger size LP turbine blades so vibration will be very high.

Answer / ajay ahake (npti ngpr )

Because , exhaust of IP is low pressure and high tempreture , when we reheat only tempreture increase but not pressure , that heat energy is not produce work unless it has pressure energy .... also that huge quantity steam can only use for number of LPTs .

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

3 Answers   Maruti Suzuki, Sail,

---

Can any one advised me how we can measure the losses in a 11kV/415v power transformer? We have no access to the incoming mains into the primary of the transformer. Can one derive something useful by measuring temperature rise in the transformer?

1 Answers   Dexdyne,

---

We know primary ,secondary air so, What is the work of Tertiary air in Thermal power plant

2 Answers   NPTI,

---

voltage and frequency is equal but synchronisation not complete why?

1 Answers  

---

Where is the pressure reduce valve in the power plant

6 Answers   Grasim,

---

Why high pressure turbines are single flow 

3 Answers  

---

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

2 Answers  

---

What is MFT and when it is acted.

2 Answers   HPCL,

---

whats plant?

1 Answers   Bhavini,

---

What is Droop Control in Woodward?

3 Answers  

---

whatis means of PPA & FSA OR SFA in power plant operation

2 Answers  

---

how to differentiate between "ALL fuel lost" and "All Flame Lost" in Boiler MFT condition?

1 Answers  

---