Determine the height of the chimney to get net draught of 12mm if the total losses are 4mm. the temperature of air is 25^oC and the temperature of chimney gases is 300^oC. The mass of air used per kg of fuel used is 18kg. One kg of air occupies a volume of 0.7734m^3 at normal temperature?(a) 26.84(b) 20.22(c) 29.93(d) 18.09I have been asked this question in an online quiz.I want to ask this question from Draught System topic in chapter Steam Generators & Accessories of Energy Engineering

Determine the height of the chimney to get net draught of 12mm if the

1.	Determine the height of the chimney to get net draught of 12mm if the total losses are 4mm. the temperature of air is 25^oC and the temperature of chimney gases is 300^oC. The mass of air used per kg of fuel used is 18kg. One kg of air occupies a volume of 0.7734m^3 at normal temperature?(a) 26.84(b) 20.22(c) 29.93(d) 18.09I have been asked this question in an online quiz.I want to ask this question from Draught System topic in chapter Steam Generators & Accessories of Energy Engineering
Answer» The correct answer is (c) 29.93 Explanation: Density of AIR at NORMAL temperature = 1/0.7734 = 1.293Kg/m^3 Density of air at 298K, ρa = 1.293 × 273/298 = 1.1845 Kg/m^3 Density of gases at 573K, ρg = 1.293 × ((18+1)/18) × 273/573 = 0.65 Kg/m^3 But, P = 12 + 4 = 16 mm of water P = H (ρa – ρg) 16 = H (1.1845 – 0.65) H = 29.93m

Discussion

No Comment Found

Related InterviewSolutions

What type of boiler is a Velox boiler?(a) Forced circulation boiler(b) Natural circulation boiler(c) Positively forced circulation boiler(d) Once- through boilerThis question was posed to me in my homework.The above asked question is from Types of High Pressure Boilers topic in division Steam Generators & Accessories of Energy Engineering
Why are salts deposited on the evaporator drum?(a) Due to continuous circulation of water(b) Due to usage of hard water containing calcium content(c) Due to circulation of impure water(d) Due to the chemicals added in waterI had been asked this question in homework.The query is from Types of High Pressure Boilers in division Steam Generators & Accessories of Energy Engineering
Why is exhaust steam coming out of turbine is admitted to a steam header?(a) To increase the pressure(b) To decrease the velocity(c) To decrease the pressure drop(d) To control the pollutionI got this question during an internship interview.This interesting question is from Cooling Ponds and Towers in portion Steam Generators & Accessories of Energy Engineering
Rotary pumps are driven by _________(a) electric motors(b) batteries(c) diesel engines(d) biogas fuelThis question was posed to me during an interview for a job.The question is from Boiler Mounting Accessories in chapter Steam Generators & Accessories of Energy Engineering
How is water circulated throughout the dry cooling tower system?(a) Finned tubes(b) Metal pipes(c) Porous tubes(d) Swirling tubesThis question was posed to me during an interview.The origin of the question is Cooling Ponds and Towers topic in portion Steam Generators & Accessories of Energy Engineering
What type valve is a feed check valve of a boiler?(a) One way valve(b) Globe valve(c) Reversible valve(d) Disc check valveI have been asked this question during an interview.My query is from Boiler Mounting Accessories in section Steam Generators & Accessories of Energy Engineering
What type of cooling system is used in the large power plants?(a) Cooling ponds(b) Natural flow system(c) Cooling towers(d) Single deck systemI got this question in an international level competition.This is a very interesting question from Cooling Ponds and Towers topic in chapter Steam Generators & Accessories of Energy Engineering
How does outside air enter into the wet cooling system?(a) Air vents(b) Louvers(c) Tuyeres(d) VacuumI have been asked this question during an online exam.The above asked question is from Cooling Ponds and Towers in portion Steam Generators & Accessories of Energy Engineering
Which of the following is the simplest method of cooling the condenser water?(a) Spray cooling pond(b) Cooling tower(c) Indirect air cooling(d) Hyperbolic cooling towerI got this question in an online quiz.My enquiry is from Cooling Ponds and Towers topic in section Steam Generators & Accessories of Energy Engineering
By which process can CO2 be removed from the atmosphere?(a) Pyrolysis(b) Photosynthesis(c) Filtration(d) MagnetohydronomicsI got this question in an interview for job.I would like to ask this question from Environmental Aspects of Power Generation in section Steam Generators & Accessories of Energy Engineering

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment