Question

which of the following boiler steam is critical booler​

Answer 1

Explanation:

A supercritical steam generator is a type of boiler that operates at supercritical pressure, frequently used in the production of electric power. In contrast to a subcritical boiler in which bubbles can form, a supercritical steam generator operates at pressures above the critical pressure – 22 megapascals (3,200 psi).

Answer 2

Answer:

Critical Boilers are the boilers which operate at steam pressure higher than critical point. Critical point is 22.064 Mpa, 373.946 deg cen. at this point latent heat of evaporation is zero & there is no difference in density of steam & water.

Explanation:

The critical pressure and critical temperature of water and steam are 22.12 MPa and 647.14 K, respectively. Any boiler that operates at the critical point is called the critical boiler.

Types of Critical Boilers:

1. Super critical boilers:

Boilers that works above the critical point is called the Super critical boilers i.e. 22.12 MPa and 647.14 K.

Examples of the Supercritical boilers are:

• Benson boiler
• Babcock and Wilcox

• Supercritical steam generator

2. Sub critical boilers;

Boilers that work below the critical point is called sub critical boilers i.e.

22.12 MPa and 647.14 K.

Examples of the Subcritical boilers are:

• Drum type steam generator