Boiler Anatomy 101: Dissecting the Key Parts of a Boiler

Boiler Anatomy 101: Dissecting the Key Parts of a Boiler

Combustion Chamber Parts of the Boiler

As the name suggests, the combustion chamber is where fuel is burned. Because the combustion chamber must handle extremely high temperatures of several hundred degrees, most are made of cast iron, steel, or some other heavy-duty metal. The combustion chamber houses the burners and is uniquely designed to provide a secure and safe zone for volatile fuel combustion. 

The Heat Exchanger Boiler Component 

The heat exchanger of your boiler is the quintessential part that transfers the heat created by the burners to the water in the boiler. The heat exchanger facilities this transfer without having direct contact with the boiler. It's very similar to the concept of boiler water in a pot. Heat exchangers are typically made from bundles of steel tubes, cast iron, or copper. 

Heat Exchangers in Hydronic Boiler Systems

With hydronic systems, water is strategically filtered around the combustion chamber via multiple flues. The boiling, pressurized water is then forced through pipes to radiators or baseboard heaters that emit the energy produced by the boiler. 

Fuel Sources

While the fuel source isn't a physical part of the boiler, it's worth mentioning. Today's boilers can run on a vast range of different fuels. However, natural gas is the most common fuel in commercial boilers. 

Supply Line Parts of the Boiler

Hydronic heating systems utilize pipes to transport the heated steam or water to different points of distributions. The supply lines are those pipes used to facilitate the distribution of steam or hot water to various radiators or other points of distribution. 

Return Line Boiler Components

The return lines are used to transfer water back into the boiler to be reheated once the water cools. In steam boilers, the return lines are used to take the steam back to the boiler for reheating once it turns back into water. 

Boiler Controls

Depending on the type of boiler you have, the number of controls can vary significantly. In either case, the system controls allow you to set water temperature, air and fuel supply mixtures, ignition, and internal pressure. The controls are vital in regulating areas, such as: 

  • How often and when the burner fires;
  • The water temperature;
  • The rate that fuel is consumed; and
  • The quality of the fuel/air mixture.

In addition, safety controls are there to make sure the internal boiler pressure doesn't exceed a certain level, ensure water temperature remains within a safe range, and the overall system functions properly. 

Exhaust Stack Parts of a Boiler System

The exhaust stack is also known as the flue. It's a series of pipes used to transport exhaust gases away from the interior of your building or facility to the outside. The exhaust stack must be meticulously constructed to make sure all dangerous gases, such as NOx and carbon monoxide, are safely ventilated away from the inside of your facility. 

Contact ATI of New York 

At ATI of New York, one of our goals is to educate you about the key parts of your boiler. We do so to help ensure you understand how your system works, so you can more confidently understand whenever there is a problem and efficiently communicate the problem.

Contact ATI of New York today. 

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