Steam engines Powerpoint Presentation

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Steam engines

by: ameet177

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STEAM ENGINE

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history From Toys to Nuclear submarines

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History First century AD -- Aeolipile - Greek mathematician Hero of Alexandria.

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Steam Papin digestor (bone digestor) 1679 Denis papin

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1712 Thomas Newcomen The atmospheric engine

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The Watt steam engine 1763 Boulton Watt

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20th century

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So how did they ? Make it ?

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H I My name is Nicolas Léonard Sadi Carnot and I will show youThe carnot cycle

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Lets check it out !!!!!

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And so … We got the pump/ = h2-h1 ˜ v1?p/?pump ˜ v1(p2-p1)/?pump Steam engine pump/ = h2-h1 ˜ v1?p/?pump ˜ v1(p2-p1)/?pump turbine/ = h3-h4 ˜ (h3-h4)*?turbine

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Rankine cycle converts heat Into work heat is supplied externally to a closed loop practical Carnot cycle isobaric (constant pressure) while isentropic (constant entropy) in the theoretical Carnot cycle liquid instead of as a gas

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Anatomy of a steam engine Heat source Boiler Steam

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Working

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Types of steam engines

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Simple expansion

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Uniflow (or unaflow) engine

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Multiple expansion engines

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Advantages convert heat from almost any source into mechanical work high elevations as they are not adversely affected by the lower atmospheric pressure high torque 60 percent lower fuel consumption per passenger steam train with similar speed and capacity is 50 percent lighter than an electric or diesel train

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Applications Marine: Steamboat, steamship, steam yacht Rail: Steam locomotive, fireless locomotive Agriculture: Traction engine, steam tractor Road: Steam wagon, steam bus, steam tricycle, steam car Construction: Steam roller, steam shovel Military: steam tank (tracked), steam tank (wheeled), steam catapult Space: Steam rocket.

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