One of the mysteries of the English language finally explained.
1Heat (a liquid) under pressure above its boiling point without vaporization.
- ‘Water below the surface is not directly exposed to the atmosphere and can remain a liquid as it superheats above this temperature.’
- ‘The nonstop operation also tends to superheat oil used in equipment, breaking down its viscosity.’
- 1.1 Heat (a vapour) above its temperature of saturation.‘superheated steam’
- ‘It is common ground that superheating of the fuel gas was necessary.’
- ‘For decades, steelmakers have used highly polluting ovens to turn powdery coal and iron ore into chunks called coke and sinter, which are melted with superheated air to make iron.’
- ‘They processed starch and an oil, such as soy oil, together in superheated steam under pressure and noted the unusual nature of a gel that came out of the jet cooker.’
- ‘At some point after its formation, the black hole emits a flare of superheated gases, travelling at relativistic speeds.’
- 1.2 Heat to a very high temperature.‘we superheat the car's brakes’
The excess of temperature of a vapour above its temperature of saturation.
- ‘Mold conditions, pouring rate, and other process variables being equal, the fluidity of commercial gray irons depends primarily on the amount of superheat above the freezing temperature (liquidus).’
- ‘More importantly, propane will vaporize and absorb superheat at low ambient temperatures - not possible with water.’
- ‘The gas from the two dedicated Zechstein wells is currently of sufficiently high pressure to drive the turbine. A fuel gas heater is being used to supply superheat to the gas.’
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