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Pages in category "Steam engines by layout" The following 9 pages are in this category, out of 9 total. This list may not reflect recent changes. C. Central valve ...
A return connecting rod, [1] [2] return piston rod [i] or (in marine parlance) double piston rod engine [2] or back-acting engine is a particular layout for a steam engine. The key attribute of this layout is that the piston rod emerges from the cylinder to the crosshead , but the connecting rod then reverses direction and goes backwards to the ...
The Finnish company Steammotor Finland has developed a small rotary steam engine that runs with 800 kW steam generator. The engines are planned to produce electricity in wood chip fired power plants. According to the company, the steam engine named Quadrum generates 27% efficiency and runs with 180 °C steam at 8 bar pressure, while a ...
The most efficient reciprocating steam engine design (per stage) was the uniflow engine, but by the time it appeared steam was being displaced by diesel engines, which were even more efficient and had the advantages of requiring less labor (for coal handling and oiling), being a more dense fuel, and displaced less cargo.
The Casablanca-class escort carrier, the most prolific aircraft carrier design in history, used two 5-cylinder Skinner Unaflow engines, but these were not steeple compounds. A non-compound Skinner Uniflow remained in service until 2013 in the Great Lakes cement carrier SS St. Marys Challenger , installed when the vessel was re-powered in 1950.
This gave the Watt engine greater efficiency than the Newcomen engine, reducing the amount of coal consumed while doing the same amount of work as a Newcomen engine. In Watt's design, the cold water was injected only into the condensation chamber. This type of condenser is known as a jet condenser. The condenser is located in a cold water bath ...
51] The uniflow engine was the most efficient type of high-pressure engine. It was invented in 1911 and was first patented in 1885 by Leonard Jennett Todd. The uniflow engine used poppet valves and half cylinders which allowed steam to pass into the engine was then used to create a high pressure environment that was key to the function of the ...
A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. [ 1 ] [ 2 ] A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure (HP) cylinder , then having given up heat and losing pressure, it exhausts directly into one or more larger-volume low-pressure (LP ...