Answer / k r kumar ranjan

In modern Steam turbine(say 600 MW) we use lube oil which having a ISO VG 32 grade,That means oil's kinematic viscosity is 32 centistoke,which have the ability to form hydrodynamic layer or wedge or film which acts as lubricating layer between shaft and journal bearing Babbitt material.As we know viscosity X Film velocity/Unit load= C(Bearing Characteristics number) which indicates whether there will be hydrodynamic lubrication or not.So for this reason generally grade-32 or 46 grade oils used not 320.

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

1 Answers   Bombay Rayon Fashions,

---

We have Demin Closed cooling water system with expansion tank for cooling oil system. Expansion tank having N2 bladder. Whenever N2 bladder bursts out, Closed cooling water circuit pressure drops and make-up happening, eventhough there is no leaks. And how Circuit pressure drops?

0 Answers  

---

What is creep, resilience.

2 Answers  

---

what is need of primary water system in power plant?

1 Answers   JO, MPL,

---

what is voltage transformer explain in details

5 Answers   Khulna Power, NCC, Reliance Power,

---

what is the difference between kg/cm2 to MMWC

2 Answers   Ansaldo,

---

how shall you calculate PLF on the basis of percentage auxillary load factor

6 Answers  

---

what equipment is most efficient in power plant?

4 Answers   Adani,

---

What will happen if the Air Preheater is placed before the Economiser?

6 Answers   Bhel, KSPL, Tata Power,

---

why do you consider yourself a suitable candidate for this position

0 Answers   Amazon, Eskom, Nabard,

---

What is reheated protection

1 Answers  

---

voltage and frequency is equal but synchronisation not complete why?

1 Answers  

---