Month: December 2022

Safety valve is used to release the excess pressure inside the boiler drum. When pressure inside the drum exceeds the working pressure, safety valves blow-off the steam into the atmosphere. Generally, four types of safety valves are used in boilers:

Boiler mountings are the components of boilers which are mounted over the body of the boiler for safety and controlling the steam generation processes. Following are the components which are used as mountings in boiler operation:

Cornish boiler is similar to Lancashire boiler but the number of tubes is only one. Also, the dimension of drum is smaller than that of Lancashire boiler. The rest are of similar construction and operation.

A Lancashire boiler is horizontal, fire tube, internal fired, natural circulation type boiler. There are two fire tubes. The fuel is burnt on the grate and hot flue gas is produced. The flue gas moves along the furnace tubes and is deflected up by fire bridge. As soon as the flue gas reaches the back… Continue reading Lancashire Boiler

Locomotive boiler is a fire tube, horizontal, multitubular, natural circulation, movable, artificial draught, internal fired boiler. It meets the fluctuating demand of steam; its chimney height is very short. Artificial draught is created by supplying steam. It is generally used in steam engine. The functions of all the mountings and accessories are discussed in a… Continue reading Locomotive Boiler

Babcock and Wilcox boiler is a water tube, horizontal, multitubular, external fired boiler. It covers wide range of pressures compared to fire tube boilers. It has steam generating capacity from 20,000 to 40,000 kg/h. It operates at an average 20–22 bar but it can be operated at maximum 40–42 bar. Its tubes are inclined at… Continue reading Babcock and Wilcox Boiler

It is fire tube, multitubular, internal fired, and vertical boiler. Its maximum steam generation capacity is 3,500 kg/h. Its shell diameter and height are 2.75 m and 5.8 m, respectively. The fuel (coal) is fired on the grate in the furnace. The hot flue gas passes through the fire tube located in the water space… Continue reading Cochran Boiler

A good boiler should have the following properties:

There are a number of models of boiler having different industrial applications. Boiler can be classified on the following basis: On the basis of contents inside the tube, boilers can be classified as fire tube boilers and water tube boilers. In fire tube boilers, flue gas passes through the tube and the heat of flue gas is absorbed… Continue reading Classification of Boilers

Steam generators are combination of apparatus, which are used in power generation and supply of steam in various plants. Its main purpose is to transfer the heat produced by fuel to water; water is converted into different types of steam as per requirements, such as wet steam, saturated steam, and superheated steam. Steam generator is… Continue reading STEAM GENERATORS/BOILERS