Mostrando las entradas con la etiqueta trabajo. Mostrar todas las entradas
Mostrando las entradas con la etiqueta trabajo. Mostrar todas las entradas

lunes, 4 de abril de 2016

Easy, quickly and thermal :)

Today we are going to show you how to build your own thermal machine with this short video :)

In the video they show us how thermal machines can generate energy, and in this particular case wind energy it is generated.







Thermal power station

In one of the previus posts we talked about a company that used a solar thermal system to cool and heat the office buildings with a solar-thermal process, now we are going to present a more common type of thermal machine which is commonly used nowadays.
It is a thermal power station which is used to gneerate electrity by burning coal supply, carbon or other materials.
Although the following video does not have sound, we thought it is very easy to visually understand it but just in case the visual part is not enough here we will be telling you how it works:



1.-  First the video shows how coal supply is being burned creating high temperaures.
2.- Water goes through tubes which are exposed to high temperatures causing it to boil and eventually evaporate.
3.- Water steam goes into a chamber where it makes contact whit the turbines.
4.- Turbines start spinning when they get in contact with the steam.
5.- These spinning of the turbines gives the energy necessary for a generator to work.
6.- Finally these generator have the required energy to produce electricity which can be used for whatever you want.

We hope you like this post and if you have any question feel free to ask.

miércoles, 10 de febrero de 2016

What is a thermal machine?

The purpose of a thermal machine is transform heat into work. For that we can use a heat substance like air or gasoline and that will do some thermal transformations in a cyclically way.



Thanks to those transformations the substance absorb the heat and turn it into work.




As we know, the machine works in a cyclically way so the change in the internal energy is null.Here we can apply work´s principle:




The work produced in a period of time is called "potency", and is defined as:






The purpose of a thermal machine is to increas the work produced and the heat absorbed, that is wtaht we call "efficiency". The work always going to be lower that the heat absorbed, so de efficienty of the machine always going to be lower than one.



Normally the efficienty is expressed in percentage. Also the most common machines has a percentage of 20%.






Thermal Machine

What is a thermal machine?

A thermal machine is a device capable of transforming thermal energy into mechanic energy to make something work. In other words a thermal machine is a perfect way to produce energy in a green way.

Some examples of thermal machines are the solar panels, steam turbines, Wankel motors, and steam engine. 

There are two ways to input the thermal energy in these machines, the natural ways like solar energy and the artificial ways like burning fossil fuels to produce heat.

In order to understand better how the thermal machines work, here is a little video about how a solar panel system work.