Definition
A heat engine that converts the pressure of steam produced by a boiler into reciprocating or rotary mechanical work.
The steam engine takes heat from fire in a furnace and converts it into mechanical work that can be transmitted to pumps, textile machinery, wheels, and generators.
Principles and impact
Problems solved
- Converts the heat energy of fuel into continuous mechanical power that is not tied to the location of a river.
- Provides scalable power for mine drainage, factory machinery, railways, and ships.
Principles
- Steam expansion or condensation creates a pressure difference that drives a piston or turbine to perform work.
- The boiler, engine mechanism, condenser, and transmission work together to convert energy.
Improvements
- Makes power more readily available where and when needed than human labor, animal power, or location-dependent water power.
Significance
- Became a key power technology of the Industrial Revolution and supplied mechanical input to large generators.
History and applications
People
Thomas Newcomen、James Watt
Organizations
Boulton & Watt
Events
Watt's patent for improvements to the steam engine in 1769
Applications
Mine drainage、Factory power、Steamships and railways
Limitations
- Has limited thermal efficiency, requires fuel, a boiler, and maintenance, and creates emissions and safety risks.
Upstream and downstream relations
Upstream
Sources: Energy Hall
Downstream
Sources: Energy HallLighting A Revolution: 19th Century Preconditions