Superheater

A Superheater is a coil type heat exchanger used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, steam engines, and in processes such as steam reforming. There are three types of superheaters: radiant, convection, and separately fired. A superheater can vary in size from a few meters to some hundred meters.

It is different from a boiler in a way that, boiler utilizes both sensible heat as well as latent heat to convert water into steam while superheater utilizes only sensible heat to superheat the steam in order to increase its enthalpy.

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Superheater Applications:

• Superheaters are used where only dry steam is required in a process/machines such as Turbines. Any moisture content in a steam in such cases happens to degrade or corrode the machine thereby affecting its average operating life. So, superheater converts low-quality steam to high quality for end users.

• Sometimes, superheater is also needed when we need to transport steam to far off places as there are some temperature losses during its transportation.

• Superheaters can be used in a steam engine where absolute dry steam is needed to prevent wear and tear of engine parts.