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Superheated steam was widely used in main line steam locomotives. Saturated steam has three main disadvantages in a steam engine: it contains small droplets of water which have to be periodically drained from the cylinders; being precisely at the boiling point of water for the boiler pressure in use, it inevitably condenses to some extent in the steam pipes and cylinders outside the boiler ...
Fan ovens cook food faster, and are also used in non-food, industrial applications. Small countertop convection ovens for household use are often marketed as air fryers. When cooking using a fan-assisted oven, the temperature is usually set lower than for a non-fan oven, often by 20 °C (36 °F), to avoid overcooking the outside of the food.
Convection (cooking in a hot-air environment, without feeding in additional steam) - temperatures range from 30 to 250 °C (86 to 482 °F) or 300 °C (572 °F), depending on the model. Superheated steam (a combination of the two methods named above) - temperatures range from 30 to 250 °C (86 to 482 °F) or 300 °C (572 °F).
A cooking vessel is a type of cookware or bakeware designed for cooking, baking, roasting, boiling or steaming. Cooking vessels are manufactured using materials such as steel, cast iron, aluminum, clay and various other ceramics. [1] All cooking vessels, including ceramic ones, absorb and retain heat after cooking has finished. [2]
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Steam's capacity to transfer heat is also used in the home: for cooking vegetables, steam cleaning of fabric, carpets and flooring, and for heating buildings. In each case, water is heated in a boiler, and the steam carries the energy to a target object.
The energy required to heat water is significantly lower than that needed to vaporize it, for example for steam distillation [10] and the energy is easier to recycle using heat exchangers. The energy requirements can be calculated from steam tables. For example, to heat water from 25 °C to steam at 250 °C at 1 atm requires 2869 kJ/kg.
The Mollier enthalpy–entropy diagram for water and steam. The "dryness fraction", x , gives the fraction by mass of gaseous water in the wet region, the remainder being droplets of liquid. An enthalpy–entropy chart , also known as the H – S chart or Mollier diagram , plots the total heat against entropy, [ 1 ] describing the enthalpy of a ...