Answer / mithilesh kumar

hi frnd..
1st offall ur question is wrong..
actually suction of ID fan is in negative..
in boiler furnce draught maintain (-3mmwc to -5mmwc) with
the help of ID fan.ie it's create vaccum in boiler side..
and it's discharge goes to stack which is positive..

Answer / ab

At normal condition ID fan discharge pressure is at 0-25mmWC. But due to chimney stack effect ID fan discharge pressure may be slightly negative

Answer / pramod suwalka

ID Fan develop the suction from boiler furnace so it shows
negetive pressure.

Answer / naseer jarral

bcz this fan is inducing draft fan this is suctioning the
draft

Answer / girish_b_k

pressure always flow from high to low pressure .
furnace pressure is high and atmospheric pressure is low

when the damper is opened automatically all the pressure to
the low pressure. the low pressure in the sense it is vaccum
only and negative is only vaccum

If Solenoidal valve works in manual mode but not in Auto mode. What should be the problem?

8 Answers   Bharathi Cement, Titanium,

---

differentiate different units of pressure like US & UK standards

1 Answers  

---

i have D.p. transmitter of range 0 to 2540 mmWC, i want to use this for flow measurement (0 to 500 ltr/hr.) what should i do?

9 Answers  

---

where can i find a flameproof hmi unit?

1 Answers  

---

HOw To Use 24V DC in Instrument?

2 Answers  

---

Rtd sensor how to calibrate

5 Answers   Sepam Group,

---

What is the use of temperature compensation?

1 Answers  

---

what's the minimum level required of SIL (safety integrity level)to use fire and gas system?

2 Answers   L&T,

---

How to convertion 100 m3/hr to mmH2O or to Kg/cm2?

0 Answers  

---

why gray colour is choosing to all instrument panel.why not choosing other colour?

1 Answers   Reliance,

---

what do u mean by 2/3 soleniod valves?

8 Answers   Nile Sugar,

---

How do you identify between actual alarm and false alarm in a Temperature Transmitter in SCADA based Control System

1 Answers  

---