What are two types of Superheaters?

What are two types of Superheaters?

There are three types of superheaters: radiant, convection, and separately fired. A superheater can vary in size from a few tens of feet to several hundred feet (a few metres to some hundred metres).

What is economiser 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 are the types of reheater used in thermal power plant?

Reheaters

• Turbine.
• Steam Turbines.
• Economizer.
• Flue Gas.
• Heat Recovery Steam Generator.
• Steam Generator.
• Superheaters.
• Feedwater.

What is function of superheater and reheaters?

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 are primary and secondary superheaters?

Working & Components of superheater: The primary superheater is the first heater that is passed by steam after the steam comes out of the steam drum. So on the secondary superheater steam formed is the hottest steam among the others. Steam from the secondary superheater which becomes superheated steam.

How many types of safety valves are used in boiler in practice?

There are two basic types of pilot operated safety valve, namely, the diaphragm and piston type. The diaphragm type is typically only available for low pressure applications and it produces a proportional type action, characteristic of relief valves used in liquid systems.

What is use of de superheater in superheater?

The Basic use of a desuperheater is to minimize the temperature of superheated steam or other vapors. This temperature deduction is accomplished gives the process vapor being brought into direct contact with another liquid such as water.

Which type of generator are used in thermal power plant?

Steam turbine-driven generators are commonly used in solar thermal electric power plants, coal, geothermal, nuclear, waste incineration plants, and natural gas power plants.

What are reheaters?

Definition of reheater : one that reheats: such as. a : a furnaceman who reheats metal. b : a receiver furnished with means for heating the steam in a compound engine or turbine. c : an apparatus for reheating compressed air before use to prevent excessively low temperatures due to expansion.

For what purpose is a superheater used?

Explanation: function of the superheater is to increase the temperature of steam above its saturation temperature. as heat contained in unit mass of superheated steam is more than dry saturated or wet steam, it is extensively used in steam power plants.

What are the different types of heat exchangers?

The heat transfer surface in heat exchangers can be arranged in several forms. Based on the heat transfer surface in Heat exchangers, they are therefore also categorized as Double pipe heat exchangers, Shell and tube heat exchangers, and Plate heat exchangers.

What is a shell and tube heat exchanger?

Compared to other types of heat exchangers, the shell and tube heat exchanger is sturdier in construction. That means it will withstand process and physical abuse for longer. Unfortunately, it is economic and efficiency shortcomings make it a poor fit for applications where highly viscous fluids are used.

How does the heat transfer work in a heat exchanger?

In order to protect the heat transfer surfaces on the inside and outside of the tubes from rusting during prolonged shutdown periods, heated air is blown through the reheater elements on the shell side to keep the ambient internal temperature above the dew point. This prevents rust forming on the outside of the tubes and the shell internals.

Do you need a heat exchanger in an industrial plant?

It is very rare not to find a heat exchanger in a modern industrial plant. This equipment is so critical to the plant’s operations that it may even determine the overall energy efficiency. Designing a good heat exchanger encompasses maintainability and types of fluids used, but we will try to focus on types of heat exchangers for now.