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The feed water enters the economizer at 145oC and leaves at 205oC. The steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as received having value of 25,102kJ/kg. What would be the overall efficiency of the unit in percent? Steam properties~ A. 65.72 B. 80.67 C. 88.28 D. 78.82 70.

Read MoreDec 17, 2017 · What should be the pump work in kJ/kg. 27.13 b. 29.87 c. 32.47 d. 33.25 Sol. Wp = vf(P4-P3)/n; vf = 1000 m3/kg BP2-97 Steam enters the superheater of a boiler at a pressure of 25 bar and dryness of 0.98 and leaves at the same pressure at a temperature of 370oC. Calculate the heat energy supplied per kg of steam supplied in the superheater.

Read MoreA 23.5 kg of steam per second at 5 Mpa and 400 deg. C is produced by a steam generator. The fedwater enters the economizer at 145 deg. C and leaves at 205 deg. C. the steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as received having a heating value of 25,102 KJ/kg. What would be the overall

Read Moreboiler attendant or fireperson—first class means a boiler attendant or fireperson who attends to 2 or more boilers or 2 or more suction gas generators,or one boiler the evaporation capacity of which attributed thereto by the maker exceeds 5000 kg but less than 45000 kg of steam per hour,or one gas generator supplying a total engine load

Read MoreA 23.5 kg of steam per second at 5 Mpa and 400 deg. C is produced by a steam generator. The fedwater enters the economizer at 145 deg. C and leaves at 205 deg. C. the steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as received having a heating value of 25,102 KJ/kg. What would be the overall

Read MoreDec 17, 2017 · What should be the pump work in kJ/kg. 27.13 b. 29.87 c. 32.47 d. 33.25 Sol. Wp = vf(P4-P3)/n; vf = 1000 m3/kg BP2-97 Steam enters the superheater of a boiler at a pressure of 25 bar and dryness of 0.98 and leaves at the same pressure at a temperature of 370oC. Calculate the heat energy supplied per kg of steam supplied in the superheater.

Read MoreThe feed water enters the economizer at 145oC and leaves at 205oC. The steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as received having value of 25,102kJ/kg. What would be the overall efficiency of the unit in percent? Steam properties~ A. 65.72 B. 80.67 C. 88.28 D. 78.82 70.

Read More- Direct steam-type humidifiers inject boiler-generated steam directly into the air stream. These systems normally operate above 70 degrees C (158 degrees F), and Legionella cannot survive at that temperature. - Atomizing humidifiers use mechanical devices or pneumatic air to create a water mist that evaporates into the air stream.

Read MoreThe feed water enters the economizer at 145oC and leaves at 205oC. The steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as received having value of 25,102kJ/kg. What would be the overall efficiency of the unit in percent? Steam properties~ A. 65.72 B. 80.67 C. 88.28 D. 78.82 70.

Read MoreDec 17, 2017 · What should be the pump work in kJ/kg. 27.13 b. 29.87 c. 32.47 d. 33.25 Sol. Wp = vf(P4-P3)/n; vf = 1000 m3/kg BP2-97 Steam enters the superheater of a boiler at a pressure of 25 bar and dryness of 0.98 and leaves at the same pressure at a temperature of 370oC. Calculate the heat energy supplied per kg of steam supplied in the superheater.

Read MoreThe vertical gas velocity is 3.5 m/s in the afterburner chamber at a thermal load of 25 Gcal/h. The off-gas at a rate of 66,000 Nm3/h leaves the afterburner chamber at a temperature of 1000°C. Heat is recovered in a steam boiler. The gases leave the boiler at 270°C. Steam is generated at 25 atm and superheated to 250°C at a rate of 34 t/h.

Read MoreME Board Problem Local coal with higher heating value of 5,500 kCal/kg is burned in a pulverized coal fired boiler with 25% excess air at the rate of 25.9 M.T. per hour when the steam generated is 220 M.T. per hour. This boiler is served by 2 forced-draft fans of equal capacity

Read MoreME Board Problem Local coal with higher heating value of 5,500 kCal/kg is burned in a pulverized coal fired boiler with 25% excess air at the rate of 25.9 M.T. per hour when the steam generated is 220 M.T. per hour. This boiler is served by 2 forced-draft fans of equal capacity

Read MoreA 23.5 kg of steam per second at 5 Mpa and 400 deg. C is produced by a steam generator. The fedwater enters the economizer at 145 deg. C and leaves at 205 deg. C. the steam leaves the boiler drum with a quality of 98%. The unit consumes 3 kg of coal per second as received having a heating value of 25,102 KJ/kg. What would be the overall

Read MoreME Board Problem Local coal with higher heating value of 5,500 kCal/kg is burned in a pulverized coal fired boiler with 25% excess air at the rate of 25.9 M.T. per hour when the steam generated is 220 M.T. per hour. This boiler is served by 2 forced-draft fans of equal capacity

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