How did the James Watt's Steam Engine work?

I am doing a project on James Watt's steam engine and want to know how the engine works to make energy. I researched myself but I find it hard to understand the vocabulary and to understand what it means. Also, when James Watt's first created this steam engine (making adjustments to the Newcomen Engine), what was it used for? I read that it was used for pumping water out of mines, but is this right.

Your answers are greatly appreciated!

Thank you

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  • Tim D
    Lv 7
    1 decade ago
    Best Answer

    Newcomen's engine used atmospheric pressure to shut the piston of the steam engine. If you look at the animation on this page…

    http://science.howstuffworks.com/steam-technology2...

    …you can see the piston (the bit moving up and down attached by a chain). It is forced up by hot steam pressure (if you look at a pan of water boiling on the stove it appears vigorous but not powerful, if you put a lid on the pan it is powerful enough to lift the lid off, if you enclose water in a can with a tightly sealed lid it will, when heated, blow the can apart). To get the piston to come back down Newcomen poured cold water into the hot steam via two valves (imagine a tap/faucet) one on the hot steam and one on the cold water from the surface – as soon as the steam cooled its pressure was reduced and atmospheric pressure (being greater than the steam pressure) pushes the piston back down (the cooling is known as condensing).

    James Watt looked at the engine and realised that the cooling of the cylinder (the sleeve the piston sits in) was taking time meaning the engine was slow, so he invented a separate condenser, see the animation on this page…

    http://science.howstuffworks.com/steam-technology3...

    The steam is now cooled by water in a separate chamber so the cylinder remains hotter and the condenser remains cooler. The engine became more efficient and was able to move quicker.

    The primary purpose of these engines was to pump mines but the linear movement (the up and down) is fairly simple to turn into circular movement, with that adjustment they could be adapted to power machinery like looms.

  • 4 years ago

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    How did the James Watt's Steam Engine work?

    I am doing a project on James Watt's steam engine and want to know how the engine works to make energy. I researched myself but I find it hard to understand the vocabulary and to understand what it means. Also, when James Watt's first created this steam engine (making adjustments to the...

    Source(s): james watt 39 steam engine work: https://biturl.im/Va64L
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