Steam engine experiments for kids - AUTO AND BOAT STEAM
This is a simple car that really works with the steam generated in a boiler, as they did in the old steam trains.It’s simple to build, it does materal dismissed as soda cans. In the photo below you can see one of these cars ready to go.
This car is so simple you can build a child 10 years later. As used cutting tools and cans easily cut itself is nice to have adult supervision.
What is a Steam Engine
A steam engine is a mechanical device that converts the steam energy into mechanical energy and which has several applications in propulsion and power generation. The basic principle of the steam engine is the transformation of heat energy of steam into mechanical energy, causing the vapor expands and cools in a cylinder fitted with a movable piston. The steam used in power generation or heating usually occurs within a boiler. The boiler is a simple closed tank containing water and heated with a flame until the water becomes saturated steam. The efficiency of steam engines is generally low.
Hero’s steam turbine
The first mention of the idea of using steam for energy appears in the pneumatic, the Greek mathematician and inventor Heron of Alexandria in the first century They described his eolípila, a steam turbine consisting of a boiler connected by two tubes to the poles of a hollow sphere could rotate freely. The sphere was equipped with two beveled nozzle where it produced steam out of the sphere rotation. Other references found in works of the Middle Ages and the Renaissance, but it seems that practical devices are built to the architect and inventor Italian Giovanni Branca expelled designed a steam boiler, which drove paddles protruding from a wheel by rotating.
The first steam engine built by the English engineer Thomas Savery in 1698, consisted of two copper vessels alternately filled steam from a boiler. Savery’s machine was used to extract water from the mines, as developed in 1705 by the British inventor Thomas Newcomen.
Our Hero turbine sewn for a can of gas as a boiler that rests on a square tin folded in three. Is heated from below with an alcohol burner made of a tin of metal (for medicines, etc). The soprte the wick is a metal tube or the tube could and ahcer from a piece of tin. Above the boiler is positioned a rotor made of plastic tubes (tubes puntabola, pens, etc.) placed on the sides of a T-piece for powered aquariums.
THE FORMATION OF STEAM
When the water is gradually heated, the temperature increases. When it’s boiling point is 100 degrees Celsius at sea level begins to form bubbles of steam. The temperature continues to rise. The heat continues to rise is called “latent heat” or “heat of vaporization” and makes it the hottest water that is used to convert the liquid into gas.
It is important to note that the steam expands 1700 times more than liquid water. That is, occupies a 1 700 times greater. The steam inside the boiler tries to escape, there is an opening sui leave there with much force, but no output may be an explosion.
Below is a steam turbine made from a focus discarded.
Below you can see a boat paddle steamer built from the car.