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2. External floating roof tank - Wikipedia

   en.wikipedia.org/wiki/External_floating_roof_tank

   The roof rises and falls with the liquid level in the tank. [1] As opposed to a fixed roof tank there is no vapor space in the floating roof tank (except for very low liquid level situations). In principle, this eliminates tank breathing loss and greatly reduces the evaporative loss of the stored liquid. There is a rim seal system between the ...

3. Storage tank - Wikipedia

   en.wikipedia.org/wiki/Storage_tank

   They are essentially cone-roof tanks with an internal floating roof travelling vertically up and down along with the liquid level. This floating roof traps the vapour from low flash-point fuels. Floating roofs are supported with legs or cables on which they rest. FR tanks do not have a fixed roof, being open at the top, and have a floating roof ...

4. Fixed roof tank - Wikipedia

   en.wikipedia.org/wiki/Fixed_roof_tank

   A fixed roof tank is a type of storage tank, used to store liquids, consisting of a cone- or dome-shaped roof that is permanently affixed to a cylindrical shell. Newer storage tanks are typically fully welded and designed to be both liquid- and vapor-tight. Older tanks, however, are often riveted or bolted, and are not vapor tight.

5. Metacentric height - Wikipedia

   en.wikipedia.org/wiki/Metacentric_height

   Stable floating objects have a natural rolling frequency, just like a weight on a spring, where the frequency is increased as the spring gets stiffer. In a boat, the equivalent of the spring stiffness is the distance called "GM" or "metacentric height", being the distance between two points: "G" the centre of gravity of the boat and "M", which ...

6. Horton sphere - Wikipedia

   en.wikipedia.org/wiki/Horton_Sphere

   A Horton sphere (sometimes spelled Hortonsphere), also referred to as a spherical tank or simply sphere, is a spherical pressure vessel, which is used for industrial-scale storage of liquefied gases. Example of materials that can be stored in Horton spheres are liquefied petroleum gas (LPG), liquefied natural gas (LNG), and anhydrous ammonia .

7. Gas holder - Wikipedia

   en.wikipedia.org/wiki/Gas_holder

   The tank was above ground and was lined with wood; the lift was guided by tripods and cables. Pulleys and weights were supplied to regulate the gas pressure. [13] Brick tanks were introduced in 1818, when a gas holder could have a capacity of 20,000 cubic feet (570 m 3). The engineer John Malam devised a tank with a central rod-and-tube guide ...

8. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

9. Thermodynamic diagrams - Wikipedia

   en.wikipedia.org/wiki/Thermodynamic_diagrams

   This Process Path is a straight horizontal line from state one to state two on a P-V diagram. Figure 2. It is often valuable to calculate the work done in a process. The work done in a process is the area beneath the process path on a P-V diagram. Figure 2 If the process is isobaric, then the work done on the piston is easily calculated.