They are inclined so that hot flue gases come in contact with hottest water.
The words are literal , a water tube boiler is water inside the tubes with hot gases surrounding them and a fire tube boiler are got gases within the tubes with water surrounding them.
Purpose of the boiler drum is to collect steam from all the various tubes in a boiler, and send it to the turbine to spin the generator
In a fire tube boiler, the water surrounds a set of tubes through which the fire and the products of combustion travel (as opposed to a water tube boiler, in which the water travels through the tubes, and the fire surrounds the tubes).The HVAC Veteran
The stay tubes basically hold the boiler together, they are thicker than the ordinary tubes and generally dont need to be replaced as often.
The answer is in the name. Boilers are made with a "tube - in - shell" construction, and the name implies what is in the tube. In a water tube boiler, the water circulates through the tubes, and the burner is usually under them. Most of the time, the "shell" of this style of boiler would not be watertight. A fire tube boiler has a watertight outer jacket with tubes through the center of it. The flame is shot through the tubes.
By gallons they hold
Pent house is a desirable living room for headers, raiser tubes & hangers at the top of the boiler
to prevent loss of heat
Effect of low water level in the boiler is rapid increase the temperature of the metal tubes, causing a collapse or rupture.
The average lifespan of a boiler tube is 20 to 40 years. Boiler tubes are made out of heat-resistant carbon and low-alloy steel.
Yes, fire tubes in a boiler are typically collared and peened. This process involves forming a mechanical joint by deforming the ends of the tubes to create a tight fit within the tube sheets. Collaring and peening help ensure a secure seal, preventing leaks and enhancing the overall efficiency and safety of the boiler system.
In a firetube boiler, it is generally acceptable to plug up to 15% of the tubes. However, this percentage can vary based on the specific design and manufacturer guidelines, as well as regulatory requirements. Plugging too many tubes can affect the boiler's efficiency and safety, so it’s essential to consult the boiler's technical specifications and perform regular maintenance. Always prioritize adhering to the manufacturer's recommendations and local codes.