External combustion engines can run on any high-temperature heat source.
2.
Steam engines are external combustion engines, where the working fluid is separate from the combustion products.
3.
This is called an external combustion engine.
4.
As with other external combustion engines, Stirling engines can use heat sources other than from combustion of fuels.
5.
The steam was produced in a boiler using wood or coal and fed through a steam external combustion engine.
6.
Since the Stirling is an external combustion engine, the exhaust has virtually no odor and pollution levels can be made very low.
7.
Internal combustion engines are quite different from external combustion engines, such as pressurized water or even liquid sodium, heated in a boiler.
8.
A Stirling is essentially an external combustion engine _ as opposed to the familiar internal combustion engines that run everything from automobiles to large factories.
9.
The development of external combustion engines is detailed as part of the history of the car, but often treated separately from the development of true cars.
10.
Reciprocating external combustion engines such as the Stirling engine can be run on a variety of fossil fuels, as well as renewable fuels or industrial waste heat.