What is the working pressure of Cochran boiler?

6.5 bar
The Cochran boiler has a working pressure of 6.5 bar and a steam capacity of 3500 kg/hr. The water level indicator is an important fitting in the boiler and it shows the water level inside the boiler.

What are the special features of Cochran boiler?

The Cochran boiler works as same as other fire tube boiler. First, The coal is placed at the grate through the fire hole. Then the air is entering into the combustion chamber through the atmosphere and fuel is sparked through fire hole. Heat is exchanged from flue gases to the water into the fire tubes.

Which type of shell is used in Cochran boiler?

cylindrical shell
Cochran boiler consists of a cylindrical shell with its crown having a spherical shape. The furnace is also hemispherical in shape.

What is the function of chimney in Cochran boiler?

A chimney is provided at the top of the boiler connected to the smokebox. The exhaust gases coming out of fire tubes pass through a smokebox and escape to the atmosphere through a chimney.

Where is Cochran boiler used?

It is used in Refining units. It is used in Paper manufacturing plants. You can find Cochran boilers in Chemical processing divisions. And it is used in a variety of process applications in various industries.

What are the advantages and disadvantages of Cochran boiler?

Advantages and disadvantages of Cochran boiler:-

• Low floor area required for the boiler installation.
• Low initialization cost.
• It is easy to operate.
• Less manpower requirement for the operation.
• It is easy to transport from one place to another.
• It has higher volume to area ratio.

Why is economiser used?

An economizer is a mechanical device used to reduce energy consumption. Economizers recycle energy produced within a system or leverage environmental temperature differences to achieve efficiency improvements.

How many types of economiser are there?

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

What is working principle of economiser?

The Economizer in Boiler works on the principle of Heat Transfer. Heat transfer usually takes place from high temperature to low temperature. In the case of Boilers, flue gases or exhaust from the boiler outlet are at high temperature and water that needs to be preheated is at low temperature.

What is a Cochran boiler?

Cochran Boiler is a simple fire tube boiler with multiple fire tubes. It is a modification of a simple vertical boiler. In the Cochran boiler, the heating surface is replaced with multiple fire tubes that’s why it is the modification of Simple Vertical Boiler.

What is the use of fire brick in a Cochran boiler?

It is a special type of brick ling use in Cochran Boiler to reduce the convection of heat from the outer surface of the boiler. Fire Brick is generally made of fire clay. It is used to control the flow of water inside the boiler, it also helps to restrict the backflow of water.

What is the difference between simple vertical boiler and Cochran boiler?

In the Cochran boiler, the heating surface is replaced with multiple fire tubes that’s why it is the modification of Simple Vertical Boiler. Cochran boiler has greater efficiency comparatively Simple vertical boiler.

How do you check the water level in a Cochran boiler?

The position of the water level in the Cochran boiler is indicated by the water level indicator. It glass tube fitted out side of the boiler to check the water level inside the boiler.