steam ratio

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• Steam aircraft — are aircraft that are propelled by steam engines. They were unusual devices because of the difficulty in producing a powerplant with a high enough power to weight ratio to be practical. They are distinct from airships that use steam as their… …   Wikipedia

• Steam injection (oil industry) — Steam injection is an increasingly common method of extracting heavy oil. It is considered an enhanced oil recovery (EOR) method and is the main type of thermal stimulation of oil reservoirs. There are several different forms of the technology,… …   Wikipedia

• Steam-Oil Ratio — The steam oil ratio (SOR) is a metric used to quantify the efficiency of oil recovery processes based on types of steam injection. The steam oil ratio measures the volume of steam used to produce one unit volume of oil. The lower the ratio, the… …   Investment dictionary

• Steam engine — A steam engine is a heat engine that performs mechanical work using steam as its working fluid. [ [http://www.britannica.com/EBchecked/topic/564472/steam engine steam engine Britannica Online Encyclopedia ] ] Steam engines have a long history,… …   Wikipedia

• Steam turbine — A rotor of a modern steam turbine, used in a power plant A steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion. Its modern manifestation was invented by Sir Charles Parsons… …   Wikipedia

• Steam whistle — A steam whistle is a device used to produce sound with the aid of live steam. Unlike a horn, the sounding mechanism of a whistle contains no moving parts (compare to train horn).The whistle consists of the following main parts, as seen on the… …   Wikipedia

• Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… …   Wikipedia

• Steam diesel hybrid locomotive — This is a historical article. For more recent developments, see Hybrid train A steam diesel hybrid locomotive was a railway locomotive with a piston engine which could run on either steam from a boiler or diesel fuel. Examples were built in the… …   Wikipedia

• Steam locomotive condensing apparatus — A steam locomotive condensing apparatus differs in purpose from the usual closed cycle steam engine condenser, in that its function is primarily either to recover water, or to avoid excessive emissions to the atmosphere, rather than maintaining a …   Wikipedia

• steam engine — An external combustion engine where water is converted to steam in a boiler outside the cylinder. The steam is then admitted to the cylinder where it expands against a piston. As the steam expands it cools and begins to condense. This mixture of… …   Dictionary of automotive terms

• ratio of expansion — the ratio of the volume of steam in an engine cylinder or turbine when the piston is at the end of the stroke to the volume at cut off …   Useful english dictionary