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A steam turbine receives steam at 2 MPa and 250 °C, and exhausts at 0.1 MPa, 0.85 dry. a) Neglecting heat losses and changes in ke and Pe, estimate the work output per kg steam. b) If, when allowance is made for friction, radiation, and leakage losses, the actual work obtained is 80% of that estimated in (a), calculate the power output of the turbine when consuming 600 kg of steam per minute. p ts vf vg hf hg sf sg (kPa) (°C) (m²/kg) (m³/kg) (kJ/kg) (kJ/kg) (kJ/kg.K) (kJ/kg.K) 100 99.63 0.00104 1.694 417.46 2,676 1.3026 7.3594 Saturated table extract for P = 100 KPa T (C) V (m³/kg) h (kJ/kg) S (kJ/kgK) 240 0.1084 2876 6.495 Superheated table extract at P = 2 MPa

A steam turbine receives steam at 2 MPa and 250 °C, and exhausts at 0.1 MPa, 0.85 dry. a) Neglecting heat losses and changes in ke and Pe, estimate the work output per kg steam. b) If, when allowance is made for friction, radiation, and leakage losses, the actual work obtained is 80% of that estimated in (a), calculate the power output of the turbine when consuming 600 kg of steam per minute. p ts vf vg hf hg sf sg (kPa) (°C) (m²/kg) (m³/kg) (kJ/kg) (kJ/kg) (kJ/kg.K) (kJ/kg.K) 100 99.63 0.00104 1.694 417.46 2,676 1.3026 7.3594 Saturated table extract for P = 100 KPa T (C) V (m³/kg) h (kJ/kg) S (kJ/kgK) 240 0.1084 2876 6.495 Superheated table extract at P = 2 MPa

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 receives steam at 2 MPa and 250 °C, and exhausts at 0.1 MPa, 0.85 dry. a) Neglecting heat losses and changes in ke and Pe, estimate the work output per kg steam. b) If, when allowance is made for friction, radiation, and leakage losses, the actual work obtained is 80% of that estimated in (a), calculate the power output of the turbine when consuming 600 kg of steam per minute. p ts vf vg hf hg sf sg (kPa) (°C) (m²/kg) (m³/kg) (kJ/kg) (kJ/kg) (kJ/kg.K) (kJ/kg.K) 100 99.63 0.00104 1.694 417.46 2,676 1.3026 7.3594 Saturated table extract for P = 100 KPa T (C) V (m³/kg) h (kJ/kg) S (kJ/kgK) 240 0.1084 2876 6.495 Superheated table extract at P = 2 MPa
Transcribed Image Text:A steam turbine receives steam at 2 MPa and 250 °C, and exhausts at 0.1 MPa, 0.85 dry. a) Neglecting heat losses and changes in ke and Pe, estimate the work output per kg steam. b) If, when allowance is made for friction, radiation, and leakage losses, the actual work obtained is 80% of that estimated in (a), calculate the power output of the turbine when consuming 600 kg of steam per minute. p ts vf vg hf hg sf sg (kPa) (°C) (m²/kg) (m³/kg) (kJ/kg) (kJ/kg) (kJ/kg.K) (kJ/kg.K) 100 99.63 0.00104 1.694 417.46 2,676 1.3026 7.3594 Saturated table extract for P = 100 KPa T (C) V (m³/kg) h (kJ/kg) S (kJ/kgK) 240 0.1084 2876 6.495 Superheated table extract at P = 2 MPa
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