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Lab Lecture Steam Engine 2008

# Lab Lecture Steam Engine 2008 - Slides for ME 115 Steam...

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Unformatted text preview: Slides for ME 115 Steam Turbine Review Steam turbine and its representation on a T-s diagram (Thermodynamics 4 th ed., Cengel and Boles, Figure 6-50) Slides for ME 115 Basic Equations ( 29 work isentropic work h h work isentropic ??? power turbine ??? work turbine height and y in velocit changes minimal adiabatic, : s assumption turbine gz 2 V h m gz 2 V h m W Q 1 s 2 i 2 i i i e 2 e e e = η- = = = + + Σ- + + Σ =- Slides for ME 115 Engine Basics • Dynamometer: Measures RPM and torque of steam turbine shaft and applies load. • Torque: a force acting through a radius; common units ft lb f • Brake (shaft) horsepower: derives its name from the fact that the power output of an engine can be measured using a dynamometer to apply a torque to resist the turning of a shaft ( 29 ( 29 33000 RPM T 2 bhp ) lb ft in is torque (if /min lb ft RPM T 2 Power Brake f f π = π = Slides for ME 115 Engine Basics • Efficiency changes with bhp.Efficiency changes with bhp....
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Lab Lecture Steam Engine 2008 - Slides for ME 115 Steam...

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