Table of Contents
Why is it called a triple-expansion engine?
It is a logical extension of the compound engine (described above) to split the expansion into yet more stages to increase efficiency. The result is the multiple-expansion engine. Such engines use either three or four expansion stages and are known as triple- and quadruple-expansion engines respectively.
How did the Titanic boilers work?
For propelling the ship, the heat energy released from the burning of coal in the ship’s boilers was transferred into steam which was then sent to the ship’s engines where it was converted into mechanical work turning the ship’s propellers.
Was the Titanic powered by steam?
RMS Titanic Two reciprocating steam engines – with a combined output of 30,000 horsepower and each weighing 720 tonnes – and one low-pressure turbine powered the Titanic. They needed the steam produced by 29 boilers, each capable of holding more than 48 tonnes of water.
What type of steam engine did the Titanic have?
Titanic was equipped with three main engines—two reciprocating four-cylinder, triple-expansion steam engines and one centrally placed low-pressure Parsons turbine—each driving a propeller. The two reciprocating engines had a combined output of 30,000 horsepower (22,000 kW).
How does a steamship engine work?
The steam engines on steamboats burned coal to heat water in a large boiler to create steam. The steam was pumped into a cylinder, causing a piston to move upward to the top of the cylinder. A valve would then open to release the steam, allowing the piston to fall back to the bottom of the cylinder.
How does a 3 cylinder steam engine work?
As the cylinders are double-acting (i.e. fed with steam alternately at each end) this gives four impulses per revolution and ensures that there are no dead centres. On a three-cylinder engine, two arrangements are possible: cranks set to give six equally spaced impulses per revolution – the usual arrangement.
What is a Scotch type boiler?
The Scotch boiler is a fire-tube boiler, in that hot flue gases pass through tubes set within a tank of water. As such, it is a descendant of the earlier Lancashire boiler, and like the Lancashire it uses multiple separate furnaces to give greater heating area for a given furnace capacity.
How hot were the Titanic boiler rooms?
Imagine in the engine rooms a temperature of 110 degrees despite two upcast shafts with fans sucking air out Imagine 120 stokers breathing thick black coal dust in the far bunkers shovelling coals into barrows, wheeling them to the stokeholes at either end of the engine rooms.
Who built Titanic’s engines?
One of Titanic’s massive engines lies almost compete in the Harland and Wolff Machine Shop….Titanic’s Engines.
| Engine Statistics | |
|---|---|
| Weight | 1,000 tons |
| Stroke | 75 inches |
| Operating Speed | 76 r.p.m. |
| Operating Output | 16,000 h.p. |
How did steam travel through a steam boiler?
The exhaust steam passed through jackets round the cylinders to the top of the condenser. The condensed steam, collecting in a hot well in the base of the condenser, was pumped back into the boilers. THE TANDEM COMPOUND ENGINES of the Britannic, built in 1874.
What is an expansion tank and how does it work?
Furthermore, an expansion tank is a shock absorber that absorbs this expansion and contraction of the volume of the water. It is critical that expansion tanks receive periodic maintenance.
What is a single stage expansion engine?
Inverted vertical engines of the single- stage expansion type were installed in the Cadiz and Havana mail steamer A. Lopez, built and engined at Dumbarton in 1865. A fine working model of these engines, built to a scale of one-
Why did Northumberland steam engines have expansion valves?
In addition to the link motion valve gear, the engines of H.M.S. Northumberland were provided with large expansion valves to give an early steam cut- off. The additional valves were operated by separate eccentrics through links that permitted the cut- off to be varied.