Super Critical Boiler – Features, Advantages, Disadvantages | New Topic [2024]

In this note, we are going to learn about Super Critical Boiler and its features, advantages, and disadvantages as well. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.

Author Name: Arun Paul.

What is Super Critical Boiler?

A supercritical boiler is a type of high-efficiency steam boiler used in power plants to produce energy. The word β€œsupercritical” refers to the state of water when heated over its critical temperature (374Β°C or 705Β°F) and pressure (22.1 MPa or 3200 psi), at which point it no longer acts as a distinct liquid or gas but rather as a fluid with qualities of both.

super critical boiler - poly notes hub
Key features of Supercritical Boiler –
  1. It offers high efficiency.
  2. These types of boilers use advanced materials.
  3. Easily handle critical condition because of their design.
  4. This types of boiler emits less carbon dioxide which beneficial for our environment.
  5. It requires regular maintenance and monitoring.

Advantages of Super Critical Boiler

Here are some advantages of this type of boiler –

  1. It offers high efficiency about 45%.
  2. This type of boiler reduces the fuel combustions.
  3. Lower carbon dioxide (CO2) emissions per unit of electricity generated.
  4. It also generates lower amount of other pollutants like NOx, SO2.
  5. This type of boiler easily can handle wide range of critical condition.
  6. It is very reliable and advanced boiler.
  7. It is supports the use of clean coal technology.

Disadvantages of Super Critical Boiler

Here are some disadvantages of this type of boiler –

  1. The initial investment is high on it.
  2. The design and engineering is very complex to understand.
  3. Regular maintenance is required for proper operation.
  4. It is requires extremely pure water to operate.
  5. Any kind of failure is this system can occur critical condition.
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