IPE (Boiler And Chimney)

Question 1

Qa (Heat Generated)

Answer 1

Qa=mf×HHV

Question 2

RBH (Rated Boiler Horsepower) Water Tube

Answer 2

RBH=H.S/0.91

Question 3

RBH (Rated Boiler Horsepower) Fire Tube

Answer 3

RBH= H.S/1.1

Question 4

DBH (Developed Boiler Horsepower)

Answer 4

DBH= Ms (hs-hf) / 35,322

Question 5

%R (Percent Rating)

Answer 5

%R= DBH / RBH

Question 6

ASME Evaporation Units

Answer 6

ASME= Ms (hs-hf) ,kJ/hr

Question 7

FE (Factor of Evaporation)

Answer 7

FE= (hs-hf) / 2,257

Question 8

n (Boiler Efficieny)

Answer 8

n= ms(hs-hf) / mf×HHV

Question 9

n (Net Boiler Efficieny)

Answer 9

Nnet= n= ms(hs-hf) / mf×HHV

Question 10

ASE (Actual Specific Evaporation)

Answer 10

ASE= Ms / Mf

Question 11

EE (Equivalent Evaporation)

Answer 11

EE= Ms×FE

Question 12

ESE (Equivalent Specific Evaporation)

Answer 12

ESE= (Ms/Mf) ×FE

Question 13

Density of air

Answer 13

Rho a = P / (RaTa)

Question 14

Density of flue gas

Answer 14

Rho g = P /(RgTg)

Question 15

Draft head

Answer 15

(Rho a - rho g) g H

Question 16

Volume flow rate of flue gas

Answer 16

Vg = (Mg Rg Tg)/ P

Question 17

Theorethical velocity

Answer 17

Vt = sqrt (2)(g)(hw)

Question 18

Actual velocity of the flue gas

Answer 18

Va = Cv Vt

Question 19

Chimney diameter

Answer 19

Vg = A v

A = pi/4 D^2

D = sqrt 4 Vg / (pi Va)

Question 20

Mass balance

Answer 20

mf + ma = mash + mg

Question 21

Gas constants

Answer 21

R = 8.3143 / MW

R = 1545 / MW