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A steam turbine receive steam at 1.35 kg/s and deliver 5000 kW. The heat loss from the casing is negligible. Find a- The change of enthalpy across the turbine when the velocity at entrance and exit are negligible. B- The change of enthalpy across the turbine when the velocity at entrance and exit are 60 and 360 m/s and the inlet pipe is 3 m above the exhaust pipe.

A steam turbine receive steam at 1.35 kg/s and deliver 5000 kW. The heat loss from the casing is negligible. Find a- The change of enthalpy across the turbine when the velocity at entrance and exit are negligible. B- The change of enthalpy across the turbine when the velocity at entrance and exit are 60 and 360 m/s and the inlet pipe is 3 m above the exhaust pipe.

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
Problem 1.1MA
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A steam turbine receive steam at 1.35 kg/s and deliver 5000 kW. The heat loss from the casing is negligible. Find a- The change of enthalpy across the turbine when the velocity at entrance and exit are negligible. B- The change of enthalpy across the turbine when the velocity at entrance and exit are 60 and 360 m/s and the inlet pipe is 3 m above the exhaust pipe. (-370 kJ/kg. -37073 kJ/kg) A steady flow of steam enters a condenser with an enthalpy of 2300 kJ/kg and velocity of 350 m/s. The condense leaves the condenser with an enthalpy of 160 kJ/kg and velocity of 70 m/s. Find the heat transfer to the cooling water per kg of steam. (-2199 kJ/kg) 6-A turbine receive steam at 1.38 bar, 0.143 m²/kg internal energy 2590 kJ/kg and 30 m/s. At leaving the condenser are 0.35 bar, 4.37 m³/kg, internal energy 2360 kJ/kg and 90 m/s. Heat is lost to the surroundings at 0.25 kJ/s. If the rate of steam flow is 0.38 kg/s. What is the power developed by the turbine?
Transcribed Image Text:A steam turbine receive steam at 1.35 kg/s and deliver 5000 kW. The heat loss from the casing is negligible. Find a- The change of enthalpy across the turbine when the velocity at entrance and exit are negligible. B- The change of enthalpy across the turbine when the velocity at entrance and exit are 60 and 360 m/s and the inlet pipe is 3 m above the exhaust pipe. (-370 kJ/kg. -37073 kJ/kg) A steady flow of steam enters a condenser with an enthalpy of 2300 kJ/kg and velocity of 350 m/s. The condense leaves the condenser with an enthalpy of 160 kJ/kg and velocity of 70 m/s. Find the heat transfer to the cooling water per kg of steam. (-2199 kJ/kg) 6-A turbine receive steam at 1.38 bar, 0.143 m²/kg internal energy 2590 kJ/kg and 30 m/s. At leaving the condenser are 0.35 bar, 4.37 m³/kg, internal energy 2360 kJ/kg and 90 m/s. Heat is lost to the surroundings at 0.25 kJ/s. If the rate of steam flow is 0.38 kg/s. What is the power developed by the turbine?
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