The development of the steam engine Teacher ： Ru-Li Lin Student ： Yu-Chen Su, Min-Ying Lin Southern Taiwan University of Science and Technology- Department of Mechanical Engineering

Outlines Newcomen engine principle base shortcomings Watt James Watt Watt investment Four patents Behind the scenes Conclusion

Newcomen ‧ He is the British businessman designed for mining equipment business. ‧ First for practical steam engine.

Newcomen atmospheric steam engine Newcomen and Carl cooperation,invented his steam engine in (Obtain“Condensate enters the lower part of the steam of the piston and the piston and connecting rod coupled to generate a variable motion”patent) 。

Newcomen atmospheric steam engine principle

In 1705, Condensate enters the lower part of the steam of the piston and the piston and connecting rod coupled to generate a variable motion Lay the steam engine base

Newcomen atmospheric steam engine shortcomings ‧ Thermal efficiency ‧ Mechanical efficiency ‧ Material issues ‧ Processing problems ‧ Problems (social needs)

The evolution of the steam engine

James Watt January 19, 1736 → Scotland August 25, 1819 → Died in 83 years  Mechanic (In 1753)17-year-old Making mathematical tools (Glasgow → London )  Instrument manufacturing division (In 1757)21-year-oldBack to Glasgow → Making mathematical appliances  Steamer (In 1763)27-year-old → Repair atmospheric steam engine → A series of invention

In 1776 Roebuck In 1782 Bolton Watt investment

In 1969,Separate condensing Savings firepower Fuel consumption First patent The principles of the movement of the piston Thermodynamics

Every stroke should be cooled with cold water, While the consumption of too much heat, Can not effectively use Maintain the temperature → Plus insulation jacket,Other methods heating Rapid cooling liquefied into water and outside the cylinder → Originally conceived Watt design model

The second patent In 1781, the Sun and the planets

In 1782, two-cylinder The third patent The fourth patent In 1784, the parallelogram

Schematic diagram of the four patents

Various mixed liquid after the heating, The lower boiling component will be the first to evaporate, Its steam, of course, will be the first to be condensed into a liquid. Steam engine-The application of the condenser

Steam engine-Two-cylinder applications When a piston on the top, the other piston is at the bottom, due to the inertia of the vertical movement of the two cylinder piston almost cancel each other out, so the shock compared to a single cylinder is less.

Steam engine- Sun and planet gear linkage applications Wells gear set The gear teeth mutual holding the gear driven by another gear to transmit power

Steam engine-Parallelogram institutional applications ← Front bucket institutions Can always maintain the level state, regardless Go to any angle can be maintained at the same level.

Wilkinson Behind the scenes The early 18th century -Darby found ironmaking coke (In 1709) Wilkinson → The barrel boring machines in 1774 Wilkinson → Precision drilling in 1775

Promote the development of the industrial revolution The establishment of institutions and Dynamics foundation The basis of the internal combustion engine and turbine Steam stimulated development Watt Mining industry Textile industry Metallurgy

References 5BRwgkAFCtr1gt.?p=%E7%B4%90%E7%A7%91%E9%96%80 &fr=yfp&fr2=piv-web 5BR21AAnEdt1gt.?p=%E7%93%A6%E7%89%B9&fr=yfp&ei= utf-8&n=30&x=wrt The Southern Taiwan Lin Congyi teacher history of mechanical materials Mechanical history books of the new compilation %e7%93%a6%e7%89%b9/ hant/%E8%A9%B9%E5%A7%86%E6%96%AF%C2%B7%E7 %93%A6%E7%89%B9

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