This short article is about steam boilers. A typical steam boiler is formed as a closed vessel with in which water or some other liquid is heated to elevated temperatures. The water used in a boiler is not necessarily heated to its boiling point although most often it is. Once in operation the heated water or liquid exits the boiler system where it is used in various industrial processes or heating applications, including water heating, central or space heating, steam-based power generation, cooking, and disinfection and many more applications.
Types of Steam Boiler
There are several types of steam boiler some of which are described below:
Water tube boilers incorporate tubes filled with water situated inside a furnace in a number of configurations. Typically the water tubes connect large drums, the lower ones containing water and the upper ones steam and water.
With mono-tube steam boilers, water is circulated by a pump through a series of coils. This type of steam boiler usually provides high rates of steam, but less storage capacity than mono-tube boilers. Water tube boilers can also be designed to use several different sources of heat and are often used in high-pressure steam applications as the high-pressure steam generated can be contained within small diameter pipes which are able to withstand the pressure.
Fire tube boilers use water which partially fills a boiler barrel with a small void left above the water surface that accommodates the steam. This is the type of tube boiler is commonly found in most steam trains.
The heat source powering the boiler is situated inside a firebox or furnace and it is important that this firebox kept immersed in water to maintain the temperature of the heating surface below boiling point. The firebox can be located at one end of a fire-tube which extends the path of the hot boiler gases, so augmenting the heating surface which can be further increased by making the boiler gases reverse direction through a second parallel tube or a bundle of multiple tubes (2-pass or return flue boiler). As an alternative the boiler gases may be run along the sides and then beneath the boiler through flues (3-pass boiler).
With a steam locomotive-type boiler, a boiler barrel extends from the firebox and the hot gases pass through a bundle of fire tubes inside the barrel which greatly increases the heat transfer surface efficiencies.
Fire-tube boilers typically deliver a lower rate of steam production, but a high steam storage capacity. Fire-tube boilers tend to use solid fuels including coal, but can be easily converted to use liquid or gas type fuels.
Pot Boilers or Haycock Boilers
These steam boilers are based on a basic “steam-kettle” type arrangement where a heat source, usually a fire heats a partially filled water container from underneath.
Haycock boilers date from the 18th century and typically produced and stored large volumes of very low-pressure steam, often hardly above that of the atmosphere. The heat source would usually be provided by burning wood or more commonly coal. The heat transfer efficiency of this type of boiler system was typically very low.
Sectional steam boilers are typically fabricated from cast iron sections where the boiler water is stored. During installation the individual sections of the boiler are usually assembled on site.
A flash boiler is a special type of water-tube boiler in which tubes are fitted close together and water is pumped through them. The tubes inside flash boilers are maintained at very high temperatures, so hot that the water feed is rapidly converted into steam and then superheated.
This type of flued boiler usually incorporated with one or two large flues and was an early form of fire-tube boiler.
World Class Steam Boiler Treatment Solutions
Water Treatment Services is a leading independent UK water and wastewater treatment, air, energy and environmental services company offering expert water management solutions including boiler water treatment, industrial wastewater treatment, energy efficiency and engineering support services.
With offices in London serving the South and South East England, Manchester (North West), Birmingham (Midlands), Bristol (South East England and Wales), Leeds (North and North East) and Glasgow (Scotland), supported by regional teams of specially trained engineers, site service specialists and technical experts we can offer water management solutions across the whole of the UK.
Contact us today to learn how our steam boiler water management and engineering solutions can help you.
More information about steam boilers … here →
People & Organisations Who Found this Useful
Read more about them
Basketball goals, backboards, hoops, complete systems and parts. Facility equipment including gym floor covers, wall pads, basketball and tennis court tile.&
Internet marketing company in Pennsylvania.&
The System combines three different components: Radiant Barrier, Attic Insulation, and Proper Ventilation. These three components work in tandem to make a complete system that will reduce your year round energy costs. Energy Attic offers free energy efficiency audits and estimates in the Greater Dallas-Fort Worth Metroplex to see which components of the ERS System will be needed to make your indoor climate as comfortable and cost effective as possible.&
Click here for our Dallas HVAC contractors
Many of the energy efficiency recommendations our Dallas HVAC contractors will suggest can be performed by you and your family with very little expense in just one afternoon. Other recommendations should be performed by professionals, however both will create an immediate, substantial, and lasting return on investment and increase the value of your home.&
Flymart.ca was founded to help promote and facilitate fly fishing in Canada. Our goal is to encourage new people, both young and old, into the sport. Flymart.ca is owned and operated by experienced fly fishers and tiers who are available and happy to answer any of your questions every day of the week.&
Engage your users
Increase visitor traffic and drive user action by embedding maps in your sites and applications.&
Landscaping Company serving Orange County
Commercial landscaping company in Corona, Escondido, Fremont, Hawthorne, Lake Forest, Santa Ana (Irvine, Newport Beach).&
The American Red Cross
Disaster relief at home and abroad, CPR certification and first aid courses, blood donation, and emergency preparedness. Support the American Red Cross today.&
Meet Roger Haynes – Criminal Lawyer Collin County
Roger Haynes provides criminal and DWI/DUI defense for clients. He is admitted to the US District Courts for the Northern and Eastern Districts of Texas, as well as the US Supreme Court and defends clients in Federal criminal courts across the country. Learn more about Roger Haynes.&