In which type of boiler do flames and gases pass through tubes surrounded by water?

In which type of boiler do flames and gases pass through tubes surrounded by water?

• A. Fire-tube boiler
• B. Water-tube boiler
• C. Saturated boiler
• D. Electric boiler

Answer: (A)

The type of boiler where flames and gases pass through tubes that are surrounded by water is known as a fire-tube boiler. In this arrangement, the combustion gases from the burner travel through the tubes, which are submerged in the water. This design allows the heat from the gases to transfer to the water, thereby generating steam or hot water for heating or other processes. Fire-tube boilers are often simpler in design and are generally used in smaller applications or industries where the demand for steam is lower. The construction enables the heat to be efficiently transferred to the water, making the system relatively effective for heating. The water outside the tubes absorbs the heat from the flames inside the tubes, leading to the production of steam. In contrast, a water-tube boiler has water that flows through tubes that are heated externally by combustion gases, making it more suitable for high-pressure applications due to its ability to handle increased pressure more effectively than fire-tube boilers. Saturated and electric boilers describe different features or methods of operation but do not specifically pertain to the arrangement of flames and gases in relation to water in the same manner as fire-tube boilers. Thus, fire-tube boiler is the correct classification for the scenario described.

The type of boiler where flames and gases pass through tubes that are surrounded by water is known as a fire-tube boiler. In this arrangement, the combustion gases from the burner travel through the tubes, which are submerged in the water. This design allows the heat from the gases to transfer to the water, thereby generating steam or hot water for heating or other processes.

Fire-tube boilers are often simpler in design and are generally used in smaller applications or industries where the demand for steam is lower. The construction enables the heat to be efficiently transferred to the water, making the system relatively effective for heating. The water outside the tubes absorbs the heat from the flames inside the tubes, leading to the production of steam.

In contrast, a water-tube boiler has water that flows through tubes that are heated externally by combustion gases, making it more suitable for high-pressure applications due to its ability to handle increased pressure more effectively than fire-tube boilers.

Saturated and electric boilers describe different features or methods of operation but do not specifically pertain to the arrangement of flames and gases in relation to water in the same manner as fire-tube boilers. Thus, fire-tube boiler is the correct classification for the scenario described.