What is the use of superheater?

Superheaters and reheaters are specially designed to increase the temperature of the saturated steam and to help control the steam outlet temperature. They are simple single-phase heat exchangers with steam flowing inside and the flue gas passing outside, generally in the cross flow.

What is platen superheater?

A platen superheater is a pendant four-pass heat exchanger. There are fourteen platens situated at the exit of the boiler combustion chamber at the distance of 0.52 m to each other. The superheated steam and the combustion products flow at right angles to each other.

What is difference between economizer and superheater?

As nouns the difference between superheater and economizer is that superheater is a component of a boiler system that heats the steam produced above its saturation temperature to prevent it condensing, and in case of a steam engine to improve its efficiency while economizer is a person who avoids waste.

What is difference between superheater and reheater?

Superheater – increases the steam temperature above the saturation temperature. Reheater – removes the moisture and increases steam temperature after a partial expansion.

Where is superheater located?

A Superheater is a system that converts liquid or saturated steam into superheated or dry steam. Superheaters are mounted in the airstreams to help restore the energy that will be lost by compression.

What is a primary superheater and secondary superheater?

The primary superheater is the first heater that is passed by steam after the steam comes out of the steam drum. After the steam is heated on the super primary heater, eating steam will be passed on the secondary superheater to be heated again.

What is the radiant superheater and convection superheater?

A radiant superheater is placed directly in radiant zone of the combustion chamber near the water wall so as to absorb heat by radiation. A convection superheater is located in the convective zone of the furnace usually ahead of economizer (in the path of the hot flue gases). These are also called primary superheaters.

What is the function of superheater and economiser?

Since the super heater steam has a lot of energy the super heater is used for reduce the temperature of the steam, the economizer helps in minimizing the conservation of energy and re-heater is used for increasing the thermal efficiency of the boilers.

How many types of economiser are there?

There are 2 types of economizers: non-condensing and condensing.

Why the superheater is necessary in boiler?

A superheater is a vital part of the a boiler system that is used to increase the overall efficiency of a thermal power plant. More specifically, it is a device which converts wet steam (saturated steam) into dry steam as dry steam contains more thermal energy.

What is the function of superheater and economizer?

How many method of superheater temperature control are there?

Desuperheating or Attemperation Method: Both these methods are very effective. The three superheaters called a primary superheater, intermediate superheater and secondary superheater are used to control the temperature of the superheated steam, and the two attemperators are installed between these superheaters.

What is a superheater in a boiler?

Superheater: Most of the modern boilers are having superheater and reheater arrangement. Superheater is a component of a steam-generating unit in which steam, after it has left the boiler drum, is heated above its saturation temperature.

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How is the temperature of steam coming out of superheater controlled?

The temp of the steam coming out of superheater is controlled by titling burners up or down through a range of 30°C.By tilling the burner downward in a furnace much of the heat is given to the water walls by the gas and the gas entering the superheater region is relatively cool.

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