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- Superheated_steam abstract "Superheated steam is a steam at a temperature higher than its vaporization (boiling) point at the absolute pressure where the temperature is measured.The steam can therefore cool (lose internal energy) by some amount, resulting in a lowering of its temperature without changing state (i.e., condensing) from a gas, to a mixture of saturated vapor and liquid. If saturated steam (a mixture of both gas and saturated vapor) is heated at constant pressure, its temperature will also remain constant as the vapor quality (think dryness, or percent saturated vapor) increases towards 100%, and becomes dry (i.e., no saturated liquid) saturated steam. Continued heat input will then \"super\" heat the dry saturated steam. This will occur if saturated steam contacts a surface with a higher temperature.Superheated steam and liquid water cannot coexist under thermodynamic equilibrium, as any additional heat simply evaporates more water and the steam will become saturated steam. However this restriction may be violated temporarily in dynamic (non-equilibrium) situations. To produce superheated steam in a power plant or for processes (such as drying paper) the saturated steam drawn from a boiler is passed through a separate heating device (a superheater) which transfers additional heat to the steam by contact or by radiation.Superheated steam is not suitable for sterilization. This is because the superheated steam is dry. Dry steam must reach much higher temperatures and the materials exposed for a longer time period to have the same effectiveness; or equal F0 kill value. Superheated steam is also not useful for heating. Saturated steam has a much higher useful heat content.Slightly superheated steam may be used for antimicrobial disinfection of biofilms on hard surfaces.Superheated steam’s greatest value lies in its tremendous internal energy that can be used for kinetic reaction through mechanical expansion against turbine blades and reciprocating pistons, that produces rotary motion of a shaft. The value of superheated steam in these applications is its ability to release tremendous quantities of internal energy yet remain above the condensation temperature of water vapor; at the pressures at which reaction turbines and reciprocating piston engines operate.Of prime importance in these applications is the fact that water vapor containing entrained liquid droplets is generally incompressible at those pressures. If steam doing work in a reciprocating engine or turbine, cools to a temperature at which liquid droplets form; the water droplets entrained in the fluid flow will strike the mechanical parts of engines or turbines, with enough force to bend, crack or fracture them. Superheating and pressure reduction through expansion ensures that the steam flow remains as a compressible gas throughout its passage through a turbine or an engine, preventing damage of the internal moving parts.".
- Superheated_steam wikiPageID "889856".
- Superheated_steam wikiPageLength "8431".
- Superheated_steam wikiPageOutDegree "18".
- Superheated_steam wikiPageRevisionID "707918947".
- Superheated_steam wikiPageWikiLink Boiler.
- Superheated_steam wikiPageWikiLink Boiling_point.
- Superheated_steam wikiPageWikiLink Category:Steam_power.
- Superheated_steam wikiPageWikiLink Category:Water.
- Superheated_steam wikiPageWikiLink Radiation.
- Superheated_steam wikiPageWikiLink Soil_steam_sterilization.
- Superheated_steam wikiPageWikiLink Standard_conditions_for_temperature_and_pressure.
- Superheated_steam wikiPageWikiLink Steam.
- Superheated_steam wikiPageWikiLink Steam_engine.
- Superheated_steam wikiPageWikiLink Steam_locomotive.
- Superheated_steam wikiPageWikiLink Steam_turbine.
- Superheated_steam wikiPageWikiLink Sterilization_(microbiology).
- Superheated_steam wikiPageWikiLink Superheated_steam.
- Superheated_steam wikiPageWikiLink Superheated_water.
- Superheated_steam wikiPageWikiLink Superheater.
- Superheated_steam wikiPageWikiLink Switcher.
- Superheated_steam wikiPageWikiLink Thermodynamic_equilibrium.
- Superheated_steam wikiPageWikiLink Vapor_quality.
- Superheated_steam wikiPageWikiLinkText "Superheated steam".
- Superheated_steam wikiPageWikiLinkText "Superheated steam#Saturated steam".
- Superheated_steam wikiPageWikiLinkText "high-pressure steam".
- Superheated_steam wikiPageWikiLinkText "saturated steam".
- Superheated_steam wikiPageWikiLinkText "superheat".
- Superheated_steam wikiPageWikiLinkText "superheated (dry) steam".
- Superheated_steam wikiPageWikiLinkText "superheated steam".
- Superheated_steam wikiPageWikiLinkText "superheated".
- Superheated_steam wikiPageWikiLinkText "superheaters".
- Superheated_steam wikiPageWikiLinkText "superheating".
- Superheated_steam wikiPageUsesTemplate Template:Citation_needed.
- Superheated_steam wikiPageUsesTemplate Template:Dubious.
- Superheated_steam wikiPageUsesTemplate Template:Main.
- Superheated_steam wikiPageUsesTemplate Template:Reflist.
- Superheated_steam wikiPageUsesTemplate Template:Use_dmy_dates.
- Superheated_steam subject Category:Steam_power.
- Superheated_steam subject Category:Water.
- Superheated_steam hypernym Steam.
- Superheated_steam type Ship.
- Superheated_steam type Liquid.
- Superheated_steam type Redirect.
- Superheated_steam comment "Superheated steam is a steam at a temperature higher than its vaporization (boiling) point at the absolute pressure where the temperature is measured.The steam can therefore cool (lose internal energy) by some amount, resulting in a lowering of its temperature without changing state (i.e., condensing) from a gas, to a mixture of saturated vapor and liquid.".
- Superheated_steam label "Superheated steam".
- Superheated_steam sameAs Q2164304.
- Superheated_steam sameAs Heißdampf.
- Superheated_steam sameAs Přehřátá_pára.
- Superheated_steam sameAs Heißdampf.
- Superheated_steam sameAs अतितप्त_भाप.
- Superheated_steam sameAs Vapore_surriscaldato.
- Superheated_steam sameAs Para_przegrzana.
- Superheated_steam sameAs m.03w955s.
- Superheated_steam sameAs Перегретый_пар.
- Superheated_steam sameAs Перегріта_пара.
- Superheated_steam sameAs Q2164304.
- Superheated_steam sameAs 過熱蒸汽.
- Superheated_steam wasDerivedFrom Superheated_steam?oldid=707918947.
- Superheated_steam isPrimaryTopicOf Superheated_steam.