Boiler Horsepower What is the boiler horsepower of a boiler generating 21,500 lbs of steam per hour at 155 psi? The factor of evaporation is 1.08. BHP = Cycle of Concentration of Boiler Water What is the cycle of concentration if the chloride content of boiler water is
A cubic foot of water contains 7.5 gallons and 1728 cubic inches, and weighs 62.5 lbs. Each nominal horsepower of a boiler requires 30 to 35 pounds of water per hour. A horsepower is equivalent to raising 33,000 pounds one foot per minute, or 550 pounds one foot per
2016/1/14 · Example 11.4 A coal fired boiler consumes 400 kg of coal per hour. The boiler evaporates 3200 kg of water at 44.5 o C into superheated steam at a pressure of 12 bar and 274.5 o C. If the calorific value of the fuel is 32760 kJ/kg, determine (a) equivalent100 o
A boiler delivers 5400 kg steam per hour at a pressure of 7.5 bar and with a dryness fraction of 0.98. The feed water to the boiler is at a temperature of 41.5oC. The coal used for firing the boiler has a calorific value of 31000 kJ/kg and is used at the rate of 670
1143 Boiler efficiency This is the ratio of heat actually used in produci…
2015/3/17 · 5.1 % Boiler Energy 117,750 Combustion Efficiency 71.6 % Fuel Energy 164,455 Blowdown Mass Flow 5.3 klb/hr Pressure 441.3 psig Sp. Enthalpy 438.8 btu/lbm Temperature 236.5 C Sp. Entropy 2.670 kJ/kg…
A steam generator evaporates 18000 kg/h of steam at 12.5 bar and a quality of 0. 97 dry from feed water at 105 C, when coal is fired at 2040 kg/h. If the higher calorific value of coal is 27400 kJ/kg, find the (a) heat rate of the boiler in k.J/h, (b) equivalent evaporation
8. A boiler evaporates 5 kg of water per kg of coal burnt on the fire grate in the combustion chamber. The temperature of feed water is 300 C and the steam is raised at 10 bar pressure. Calculate equivalent evaporation from and at 1000 C per kg of coal as well0 9.
Water Tube Boilers Used for high pressure high capacity steam boiler Available in sizes that are far greater than the fire tube design. Up to several million pounds per hour of steam. Able to handle higher pressures up to 5,000psig Recover faster than their firetube
The steam temperature is 598K and the feedwatertemperature is 328K. When fired with oil of calorific value 47 250kJkg, the boiler plant achicves an efficiency of 85%. The generated steam is fed to drive a turbine which develops 0.75 MW and exhausts at 1.8 bar, the dry- ness fraction of the steam being 0.97.
The steam is 97 % dry. Feed water temperature is 400 0C. Coal is fired at a rate of 2050 kg per hour, having calorific value 28000 kJ/kg. (GTU Dec-08) Calculate: (i) Thermal efficiency (ii) Equivalent evaporation per kg of coal. A boiler generates 7.5 kg of steam/kg
6. A coal fired boiler plant consumes 400kg of coal per hour. The boiler evaporates 32000kg of water at 44.50 C into superheated steam at a pressure of 12 bar and 274.50 C. If the calorific value of fuel is 32760 kj/kg of coal determine: i. Equivalent evaporation. ii
2021/5/18 · A coal fired steam boiler uses 3000 kg of coal per hour. Air required for combustion is 15.5 kg per kg coal at barometric pressure of 98.2 KPa. The flue gas has a temperature of 285°C and an average molecular weight of 30. Assuming ash loss of 11% and allowable gas velocity of 7.5 m/s, find the diameter of the chimney. a.
24.8.1 A boiler evaporates 3.6 kg of water per kg of coal burnt into dry saturated steam at 10 bar pressure .The temperature of feed water is 32 o C. Find the equivalent evaporation from and at 100 o C as well as factor of evaporation. Solution Mass of steamm s = 3.6
MCQs: 64 kg of steam is produced at 14 bar pressure having a dryness fraction of 0.82. The feed water temperature in the boiler is 39 C. Determine equivalent evaporation if mass of coal consumed is 8 kg. - (A) 5.05 kg of steam/kg of fuel - (B) 7.05 kg of steam/kg of
2020/12/14 · 69. 23.5 kg of steam per second at 5 MPa and 400 C is produced by a steam generator. The feedwater enters the economizer at 145 C and leaves at 205 C. The steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as
5. A coal fired boiler plant consumes 400kg of coal per hour. The boiler evaporates 3200 kg of water at 44°C into superheated steam at a pressure of 10 bar and 220°C. If the calorific value of coal is 32760 kJ/kg, determine: Equivalent evaporation from an at 100°C Thermal efficiency of the boiler. ii.