To accommodate thermal expansion between reformer tubes and the outlet manifolding.
A steam engine is an external combustion engine. As the steam engine combusts outside of the engine itself.
A rotary steam engine was a fire engine basically
the steam engine was improved in 1769.
Steam
A steam engine?
noun: an engine worked by steam, typically one in which a sliding piston in a cylinder is moved by the expansive action of the steam generated in a boiler.A steam engine is an external combustion engine. As the steam engine combusts outside of the engine itself.
Robert Fulton.
Coal + Boiler= Steam Engine
James watt popularised steam engine.
A steam engine uses water, steam, and heat.
A steam engine is a heat engine. A steam engine uses boiling water to produce mechanical work. It uses the steam from the boiling water as its working fluid.