What is the difference between fire tube and water tube boiler?

The boiler is divided into two main types. The main difference between fire tube and water tube is that in fire tube boiler the flue gases flow in the tubes and water flows from the shell and in water tube boiler, water flows from the tubes and the flue gases from the shell or passes over the tubes.

In this regard, which is more efficient fire tube or water tube boiler?

Between the two types of boiler designs, water tube boilers are remarkably more efficient than their fire tube counterparts. This stems from a number of factors: Water turns to steam more quickly. When the water flows through the tube, it is surrounded by the heat source, rather than the other way around.

Likewise, what is the advantage of fire tube boiler? Fire tube boilers are a lower cost alternative to water tube boilers and are often used for smaller industrial facilities with lower operating pressures. The main advantages of a fire tube boiler are its simple construction, compact size and the ability to easily meet rapid fluctuations in steam demand.

Keeping this in view, how does a water tube boiler work?

A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes. The heated water then rises into the steam drum.

What is a smoke tube boiler?

The smoke tube boiler is used with low operating pressures up to around 40 bars and a power range between 5 and 25 MW. Depending on the fuel, the combustion chamber can be used either cooled or uncooled. The boiler can be used for hot water and saturated steam generation as well as for superheated steam generation.

Why water tube boiler is more efficient?

Water tube boilers require far less water to function, and at the same time, they also have a higher rate of steam generation than fire tube boilers. This helps to reduce the amount of water and fuel necessary to make a water tube boiler run compared to the alternative option.

Where are fire tube boilers used?

They are widely used in small installations to heat buildings and to provide power for factory processes. Fire-tube boilers are also used in steam locomotives.

What are the two parts of a boiler?

Basic Parts of a Boiler. A boiler is a self-contained combustion system that heats water. The hot water or steam produced by a boiler is then used in heating systems. Although designs vary, a boiler has four main parts: the burner, the combustion chamber, the heat exchanger and the pluming apparatus.

What is mud drum?

Mud drum. Related to Mud drum: Water tube boiler. (Steam Boilers) a drum beneath a boiler, into which sediment and mud in the water can settle for removal. See also: Mud.

Which boiler is more efficient?

Modern boilers are more efficient for several reasons, but their main advantage is that they are all condensing boilers. A condensing boiler has a larger heat exchanger, so it recovers more heat, sends cooler gases up the flue and is more efficient.

What is boiler Draught?

2. DEFINITION ? Boiler draught may be defined as the small difference between the pressure of outside air and that of gases within a furnace or chimney at the grate level, which causes flow of air/hot flue gases to take place through boiler.

What is the efficiency of boiler?

The initial value of boiler efficiency for Z Boiler is depending on the boiler type, but it is normally 80-88%. In short, 80-88% in the generated heating value after the fuel is burnt by the burner regenerates into the steam heating value, the remain of 12-20% is loss.

What is boiler and its types?

There are two general types of boilers: ''fire-tube'' and ''water-tube''. Boilers are classified as "high-pressure" or "low-pressure" and "steam boiler" or "hot water boiler." Boilers that operate higher than 15 psig are called "high-pressure" boilers. A hot water boiler, strictly speaking, is not a boiler.

What are the 3 types of boilers?

There are three main types of the gas boiler - Combination (or combi), System and Regular.

How does water flow through a boiler?

The water pipe is actually one small section of a large, continuous circuit of pipe that travels right around your home. It passes through each hot-water radiator in turn and then returns to the boiler again. As the water flows through the radiators, it gives off some of its heat and warms your rooms in turn.

Why do boiler tubes fail?

The short term overheating failure is mainly due to blockage in the fluid path by some foreign material which gets into the tube surface during fabrication or during erection of the unit. The blockage can also happen when debris after acid cleaning of the boiler is not removed completely.

What is stay tube in Boiler?

Definition of stay tube. : a fire tube with flared or threaded thickened ends that project through both tube sheets in a steam boiler so as to form stays.

What is the most common type of high pressure boiler?

The most common type of high pressure boiler is the D type water tube boiler.

What is water wall in boiler?

Water Wall Tubes:These are tubes in the boiler where water is evaporated to steam and are also called steam generating tubes. These tubes also form the walls of the boiler and are hence called water walls or water wall panels.

What is the function of boiler?

Boiler design is the process of designing boilers used for various purposes. The main function of a boiler is to heat water to generate steam. Steam produced in a boiler can be used for a variety of purposes including space heating, sterilisation, drying, humidification and power generation.

What is a downcomer in a boiler?

Downcomer are a group of pipes that come out of the boiler drum in downward direction to bottom ring header. That supply water to waterwall tubes. Downcomers are found outside of the furnace water wall. In assisted circulation boiler it has boiler circulating pump with it to create circulation.

What are boiler tubes made of?

COMPOSITION OF BOILER TUBES. Generating tubes are usually made of low carbon steel. They may be either seamless or resistance-welded.

What is smoke tube?

Definition of smoke tube. To determine the presence of moving air, the direction of flow, and the approximate velocity of flow, the smoke tube method is commonly used, particularly in metal mines. The device consists of an aspirator bulb, which discharges air through a glass tube containing a smoke-generating reagent.

What is a smoking tube?

A-MAZE-N. Tube Smokers. Tube Smokers perform very well in pellet grills, gas grills and gas smokers. Their unique design takes up very little space on your grates. They produce great smoke during cold smoking and at cooking temps.