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Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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QUESTION ONE a. Explain the two primarily classification of boilers and also differentiate between supercritical and critical boilers arrangements. b. Briefly explain five accessories and their functions installed inside and outside the boiler. c. In a steam power plant operating on ideal Rankine cycle, steam enters the turbine at 20 bar with an enthalpy of 3248 kJ/kg and an entropy of 7.127 kJ/kg K. The condenser pressure is (0.1 bar. Find the cycle efficiency and specific steam consumption in kg/kWh. Do not neglect pump work. Hint 1 bar 100 kPa, V3 = 0.001 m3/kg at 0.1 bar from steam tables* Use the extract of steam table given below. Vf t h₂ Р (bar) 20.0 0.1 (°C) 212.4 45.81 908.8 191.83 kJ/kg hg 1890.7 2584.7 S₁ 2.447 0.6493 = kJ/kg 6.331 8.1502
Transcribed Image Text:QUESTION ONE a. Explain the two primarily classification of boilers and also differentiate between supercritical and critical boilers arrangements. b. Briefly explain five accessories and their functions installed inside and outside the boiler. c. In a steam power plant operating on ideal Rankine cycle, steam enters the turbine at 20 bar with an enthalpy of 3248 kJ/kg and an entropy of 7.127 kJ/kg K. The condenser pressure is (0.1 bar. Find the cycle efficiency and specific steam consumption in kg/kWh. Do not neglect pump work. Hint 1 bar 100 kPa, V3 = 0.001 m3/kg at 0.1 bar from steam tables* Use the extract of steam table given below. Vf t h₂ Р (bar) 20.0 0.1 (°C) 212.4 45.81 908.8 191.83 kJ/kg hg 1890.7 2584.7 S₁ 2.447 0.6493 = kJ/kg 6.331 8.1502
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