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Steam Engines

This category cover the various types of steam engines in trains, vintage cars and motorbikes, steam engines used for drives, invention explanations, how the different steam engines work, how steam trains and other steam engine driven vehicles work, what the various changes over time were to make steam engines more efficient and why.

950 Questions

How does a steam engine work?

Imagine 2 main parts. A boiler and a single piston engine. The boiler is filled with water and is heated by a fire. The water boils and expands. The steam escapes the boiler then enters the engine at high pressure. This forces the piston down and turns the crank which is attached to a heavy flywheel for momentum. The steam escapes the cylinder into the atmosphere when the piston reaches the bottom and momentum is gained. A valve opened or closed regulates the in flow of steam into the engine and thus controls the speed of it. What ever is attached to the crank will now be turned.
A steam engine, at its simplest, consists of a boiler and a piston, which is contained in a cylinder. The boiler is where water is converted to steam(boiled), using coal. This steam creates a pressure in the cylinder, pushing the piston back, which then causes the crankshaft to rotate. The crankshaft is connected to a wheel, which causes it to rotate as well, thus the movement of the vehicle. Note that the pressure is released each time the piston is pushed back, so that it goes back to its original position. Please check out the attached link to gain a better understanding!
A steam engine performs mechanical work by using steam as its working fluid. High pressure steam is used to press on pistons and push exhaust steam out into the air. A cross head is connected to the piston rod and then to whatever needs to have mechanical work done on it.

First steam ship?

The era of the steamboat began in America in 1787 whenJohn Fitch (1743-1798) made the first successful trial of a forty-five-foot steamboat on the Delaware River on August 22, 1787, in the presence of members of the Constitutional Convention. Fitch later built a larger vessel that carried passengers and freight between Philadelphia and Burlington, New Jersey.

John Fitch was granted his first United States patent for a steamboat on August 26, 1791. However, he was granted his patent only after a battle with James Rumsey over claims to the same invention. Both men had similar designs

How did James watt invent the steam engine?

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I think Watt was not the first to invent THE steam engine, although his model probably had improvements, etc. Ever see a drop of water on a stove top? It can move a little peice of wood. Perhaps that was the first steam engine?

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Sorry - although you start correctly, the rest is guess-work very wide of the mark. No drops of water moving bits of wood, at all.

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In Watt's day, the only practical steam-engines were those invented some decades previously by Newcomen. These were purely reciprocating machines for driving mine-drainage pumps, and though they worked they were dreadfully inefficient because their power stroke was forced not by steam, but by atmospheric pressure against a partial vacuum created by using a water jet to condense steam in the cylinder.

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James Watt analysed the problem and realised that moving the condensing to a separate vessel, so keeping the power cylinder hot, made the engine much more efficient - costing much less to run. He was also one of those who found how to make the steam-engine rotative, so it could drive a much greater range of machinery than just the simple water-pump.

How did the steam engine impact England during the Industrial Revolution?

The steam engine revolutionized society. It displaced animal power (man and animal power) and displaced humans from the economy. The steam engine revolutionized transportation and manufacturing and created the industrial Revolution. The Steam Engine empowered Empires.

What impact did the steam engine have in great Britain?

Railways could transport goods for a cheaper price and in a quicker time.

More jobs because the cycle of prosperity.

People could go on day trips to other places in the country instead of spending the whole day travelling there.

Health improved because of better food supply.

Hope this helped x

How does chilled brine plant work?

Brine plant will gives us the temparature below zero degrees. but where as in chilled plant the temparature above zero only

How calculate the engine work from pressure crank-angle diagram?

Well Work is the integral of P*dV and since the crank angle plot doesn't directly show volume you need to calculate instaneous volume of the cylinder as a function of crank angle. If you know the bore and stroke you can find the volume of the cylinder and you can relate this to the crank angle. Once you have these values you can replace the crank angle with volume and have a P-V plot or pressure on the y-axis and volume on the x-axis. Then you can integrate the area under the curve and find the work from the engine.

However, all this is done for you if you can find the P-V diagram for your engine or engine cycle (Sterling, Atkinson, Otto, Diesel, etc.) and integrate this for the work.

What is En-8 material?

EN8 also know as 080M40. An unalloyed medium carbon steel. EN8 is a medium strength steel, good tensile strength. Suitable for shafts, stressed pins, studs, keys etc. AISI 1040.

Available as normalised or rolled. EN8 is supplied as round drawn/turned, round hot rolled, hexagon, square, flats and plate.

Where do railway steam engines carry there water?

Actually they carry the water in the tender in a tank below the coal. The tender is hooked onto the back of engine, and the water gets to the boiler which is the 'large tank on the front of the engine' through a flexible hose.

In the large tank on the front of the engine.

Why viscosity important in fluid property?

Viscosity provides a resistance to a fluid being squirted out, say, between a crankshaft and a bearing journal under pressure. So measuring viscosity will be important for predicting how much protection a given fluid will provide.

Why the vacuum is maintained in Steam condenser?

It is important to maintain a vacuum in a condenser if you want it to work well.

Why mostly steam is used to rotate a turbine?

The Rankine cycle is one where a closed loop containing water/steam is used to transfer energy from an energy source such as a coal fired furnace or a nuclear reactor to a steam turbine/generator. It is the way all such power plants work, but not plants using gas turbines or combustion turbines which don't use a water/steam circuit.

In the Rankine cycle there are progressive stages: 1. Cool feedwater is pumped at high pressure into a boiler which is heated by the furnace or nuclear reactor 2. The water is heated and evaporated at high pressure, becoming steam 3. The steam is further heated to become superheated 4. The steam is admitted to the HP end of the steam turbine, and it progresses in stages to the LP end by which time it is cooled and under vacuum (the vacuum is maintained by external cooling water and increases the efficiency considerably by getting the maximum energy out of the steam) 5. The steam condenses in the turbine condenser under vacuum, to produce cool water, and hence back to stage 1. Electrical energy is extracted by the generator which is coupled to the shaft of the turbine, but that is not really part of the Rankine cycle, which is described in thermodynamic terms only. See link below for more reading and diagrams.

How do you make culinary steam?

There are a couple of ways to make "culinary steam". The first is by immersing a food, like rice in water, covering the pot and boiling it. But there is also something called a "bain Marie". It's a simple oven steamer. The dish to be cooked is placed in another vessel and placed in the oven. The holding vessel is filled with water and the dish is cooked at a constant temperature (the boiling point of water) and the top steamed at the same time. There are also steamers like rice cookers and perforated trays that can be suspended above boiling water while the food in the trays is steam cooked. The Chinese use bamboo baskets suspended over water boiling in a wok for the same purpose.

2006 ford f150 horsepower 5.4 engine?

I believe it is 300 SAE NET horsepower at 5000 RPM and 365 lb ft torque at 3750 RPM for the 5.4 3V

What does it take to be a Steam Train Engineer?

I'm assuming the questioner is American so using "engineer" as = "driver" in the UK.

A thorough knowledge of the machine itself - how it works etc., how to prepare, fire and drive it at its most efficient for the required speeds, train weights & track conditions.

A thorough knowledge of the particular railway's operating & safety rules & procedures; and of its route.

Good physical health including good eyesight.

Anything else? Oh yes - knowing the difference between a "train" and a "locomotive" (or "engine") would be a good start!

How can one control the process factors in order to get less maintenance?

make the proper lubrication schedule of all rotating equipment and availability's of all spare parts at proper time.

Who invented the first steamboat engine and in what year?

The steamboat was invented by John Fitch in the early 1790s. See the Related Link below.

Difference between internal combustion engines and steam engines?

Internal combustion engine is where the fuel is ignited in the cylinder to make the piston move, petrol or diesel.

A steam engine has an external pressure vessel to supply the steam to the cylinder to push the piston. the is no combustion in the engine as such.

What is a stage of an impulse turbine?

In an impulse turbine, the stage is a set of moving blades behind the nozzle. In a reaction turbine, each row of blades is called a "stage." A single Curtis stage may consist of two or more rows of moving blades.

What is the full form of lbf?

foot-pound. That is the application of one pound(al) of force to an object with a lever at 1 foot distance from the point of application. Usually, a torque wrench is used to apply a specific force to a bolt, measured in foot-pounds.

What is combination set?

System with several different mechanisms are made ​​with different devices.

What would happen if the contianer did not have pressure relese valve?

As the pressure increased, eventually the container would burst. Before such a dangerous pressure is reached, a safety valve would open and automatically release the pressure, preventing the container from bursting. An example is the safety valve fitted to the lid of a domestic pressure cooker used in the kitchen. When the safety valve opened, steam would be released and warn the cook to turn heat on the kitchen stove down to a safer level.