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1) "Fire" -- As to fire tube boiler 1fire Pronunciation: 'fi(-&)r Function: noun Usage: often attributive Etymology: Middle English, from Old English fyr; akin to Old High German fiur fire, Greek pyr 1 a (1) : the phenomenon of combustion manifested in light, flame, and heat (2) : one of the four elements of the alchemists b (1) : burning passion : ARDOR (2) : liveliness of imagination : INSPIRATION 2 a : fuel in a state of combustion (as on a hearth) b British : a small gas or electric space heater 3 a : a destructive burning (as of a building) b (1) : death or torture by fire (2) : severe trial or ordeal 4 : BRILLIANCY, LUMINOSITY <the fire of a gem> 5 a : the firing of weapons (as firearms, artillery, or missiles) b : intense verbal attack or criticism c : a rapidly delivered series (as of remarks) - fire·less /-l&s/ adjective - on fire 1 : being consumed by fire : AFLAME 2 : EAGER, BURNING - under fire 1 : exposed to fire from an enemy's weapons 2 : under attack Pronunciation Symbols It has been suggested that this article or section be merged with Flame. (Discuss) A forest fire Fire is the rapid oxidation process that creates light, heat, and smoke, and varies in intensity. It is commonly used to describe either a fuel in a state of combustion (e.g., a campfire, or a lit fireplace or stove) or a violent, destructive and uncontrolled burning (e.g., in buildings or a wildfire). The discovery of making fire is considered one of the most important elements in the evolution of humankind, for it allowed higher hominids to ward off wild animals, cook food, and provide warmth as well as a source of light in darkness. - 1 Controlling fire
- 2 Fire and religion
- 3 Fire as a power source
- 4 The chemistry of fire
- 4.1 Flame
- 4.2 Typical temperatures of fires and flames
- 5 Fires in history
- 6 Fire protection and prevention
- 7 See also
- 8 References
- 8.1 Citations
- 8.2 General references
- 9 External links
| Controlling fire for the purposes of providing heat and light is one of humankind's first great achievements. The ability of fire making to generate heat and light made possible migration to colder climates and enabled people to cook food — a decisive step in the endless fight against disease. Smoke signals were an early use of fire for communication,[citation needed] and fire soon enabled advancements in metallurgy such as smelting and forging. Archaeology indicates that ancestors of modern humans such as Homo erectus seem to have been using controlled fire as early as some 790,000 years ago. The Cradle of Humankind site has evidence for controlled fire from 1 to 1.8 million years ago.
2) "Tube" -- As to fire tube boiler tube Pronunciation: 'tüb, 'tyüb Function: noun Etymology: French, from Latin tubus; akin to Latin tuba trumpet 1 : any of various usually cylindrical structures or devices: as a : a hollow elongated cylinder; especially : one to convey fluids b : a soft tubular container whose contents (as toothpaste) can be removed by squeezing c (1) : TUNNEL (2) British : SUBWAY b d : the basically cylindrical section between the mouthpiece and bell that is the fundamental part of a wind instrument 2 a : a slender channel (as a fallopian tube or a pollen tube) within a plant or animal body : DUCT b : the narrow basal portion of a corolla with united petals or a calyx with united sepals 3 : INNER TUBE 4 a : ELECTRON TUBE; especially : VACUUM TUBE b : CATHODE-RAY TUBE; especially : a television picture tube c : TELEVISION 5 : an article of clothing shaped like a tube <a tube top> <tube socks> - tubed /'tübd, 'tyübd/ adjective - tube·like /'tüb-"lIk, 'tyüb-/ adjective - down the tube or down the tubes : into a state of collapse or deterioration Pronunciation Symbols Tube may refer to: Object - cathode ray tube, a common component of electronics such as televisions and other displays
- cylinder (geometry), a hollow shape
- inner tube, a component of vehicular tires
- pneumatic tube, a method of transportation utilising compressed air
- test tube, a piece of laboratory equipment used in science
- Tube, the bus on the BBC Micro computer
- tubing (material), used in plumbing, irrigation, and other applications
- vacuum tube, a component of electronics
Packaging - squeezable tube, a packaging solution for pasty and viscous goods
Transportation - The Tube, officially the London Underground, London's subterranean train system.
- Transbay Tube, an underwater rail tube across the San Francisco Bay
Nature - lava tube, found in volcanoes
- the inside of a hollow wave in surfing
Media - The Tube (TV series), a music related TV series by Channel 4 in the United Kingdom
- The Tubes, a San Francisco based rock group
- TUBE, a Japanese pop group
- Tube (game), a freeware game from Bullfrog Productions, released in 1995
- Tube (movie), a South Korean movie (튜브 (ì˜í™”)).
- Tube, a children's programme with inflatable characters on SABC, South Africa
- Tube & Berger, the alias of Dance/Electronica producers Arndt Rörig and Marco Vidovic from Germany
- YouTube, a website that allows users to upload, view, and share video clips
- Peter 'Tubes' Dale, aka Tubes from the Soccer AM television show.
File-sharing - Tubes (Filesharing), a file-sharing program.
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3) "Boiler" -- As to fire tube boiler boil·er Pronunciation: 'boi-l&r Function: noun 1 : one that boils 2 a : a vessel used for boiling b : the part of a steam generator in which water is converted into steam and which consists usually of metal shells and tubes c : a tank in which water is heated or hot water is stored Pronunciation Symbols A boiler is a closed vessel in which water or other fluid is heated under pressure. The fluid is then circulated out of the boiler for use in various processes or heating applications. - 1 Overview
- 2 Superheated Steam Boilers
- 3 Supercritical Steam Generators
- 4 Hydronic boilers
- 5 Accessories
- 5.1 Boiler fittings
- 5.2 Steam accessories
- 5.3 Combustion accessories
- 6 Controlling draft
- 7 See also
- 8 References
| Diagram of a fire-tube boiler Construction of boilers is mainly limited to copper, steel and cast iron. In live steam toys, brass is often used. The source of heat for a boiler is combustion of any of several fuels, such as wood, coal, oil, or natural gas. Electric boilers use resistance or immersion type heating elements. Nuclear fission is also used as a heat source for generating steam. Heat recovery steam generators (HRSGs) use the heat rejected from other processes such as gas turbines. Boilers can also be classified into: - Fire-tube boilers. Here, the heat source is inside the tubes and the water to be heated is outside.
- Water-tube boilers. Here the heat source is outside the tubes and the water to be heated is inside.
- A primitive, inefficient type where there are no tubes and the fire heats one side of the water container.
The goal is to make the heat flow as completely as possible from the heat source to the water. For example, steam locomotives have fire-tube boilers, where the fire is inside the tube and the water on the outside. These usually take the form of a set of straight tubes passing through the boiler through which hot combustion gases flow. Diagram of a water-tube boiler. In water-tube boilers the water flows through tubes a..."
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