A monotube steam generator is a type of

steam generator Steam is water vapor, often mixed with air or an aerosol of liquid water droplets. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Saturated or superheated steam is inv ...

consisting of a single tube, usually in a multi-layer spiral, that forms a once-through steam generator (OTSG). The first of these was the Herreshoff steam generator of 1873.

Principles

For the sake of efficiency, it is desirable to minimise the

steam Steam is water vapor, often mixed with air or an aerosol of liquid water droplets. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Saturated or superheated steam is inv ...

content of the generator. Heat can then be transferred efficiently into liquid water, rather than into low-density steam. Monotube steam generators may either boil gradually along their length, usually pumped circulation systems, but where this boiling does not disrupt the circulation. Otherwise they can use the Benson supercritical system, where the pressure is sufficient to prevent boiling (within the heated volume) altogether.

Examples

Examples of Monotube steam generators include: * Industrial

s * The water-tube boilers of the monotube type used in

steam car A steam car is a car (automobile) propelled by a steam engine. A steam engine is an external combustion engine (ECE), whereas the gasoline and diesel engines that eventually became standard are internal combustion engines (ICE). ECEs have a low ...

s, such as: **

AMC AMC may refer to: Film and television * AMC Theatres, an American movie theater chain * AMC Networks, an American entertainment company ** AMC (TV channel) ** AMC+, streaming service ** AMC Networks International, an entertainment company *** ...

** Clayton Steam Generator **

Doble steam car The Doble steam car was an American steam car maker from 1909 to 1931. Its latter models of steam car, with fast-firing boiler and electric start, were considered the pinnacle of steam car development. The term "Doble steam car" comprises any ...

Gardner-Serpollet Gardner-Serpollet was a French manufacturer of steam car, steam-powered cars in the early 20th century. Léon Serpollet is credited with inventing and perfecting the flash boiler in the late 1800s.Locomobile Company of America The Locomobile Company of America was a pioneering American automobile manufacturer founded in 1899, and known for its dedication to precision before the assembly-line era. It was one of the earliest car manufacturers in the advent of the autom ...

White Motor Company White Motor Company (later renamed White Motor Corporation and commonly known as White) was an American car, truck, bus and agricultural tractor manufacturer from 1900 until 1980. The company also produced bicycles, roller skates, automatic la ...

, US patent 659,837 of 1900

Flash boilers

A flash boiler is a particular type of low-water-content monotube boiler. Modern use is confined to model steam boats but, historically, flash boilers were used in

Gardner-Serpollet Gardner-Serpollet was a French manufacturer of steam car, steam-powered cars in the early 20th century. Léon Serpollet is credited with inventing and perfecting the flash boiler in the late 1800s.List of boiler types, by manufacturer There have been a vast number of designs of steam boiler, particularly towards the end of the 19th century when the technology was evolving rapidly. A great many of these took the names of their originators or primary manufacturers, rather than a m ...

Steam generator (boiler) A steam generator is a form of low water-content boiler (steam generator), boiler, similar to a flash steam boiler. The usual construction is as a spiral coil of water-tube boiler, water-tube, arranged as a single, or monotube boiler, monotube, c ...

Steam generator (railroad) A steam generator is a type of boiler (steam generator), boiler used to produce steam for climate control and potable water heating in railroad Passenger car (rail), passenger cars. The output of a railroad steam generator is low-pressure, saturat ...

References

Steam generators {{mech-engineering-stub